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Covid-19: Restaurant Eating and Lack of Masks Mandates Are Every Linked to U.S. Virus Unfold, C.D.C. Says

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C.D.C. Warns Against Repealing Virus Restrictions

At a Friday briefing, the Centers for Disease Control and Prevention warned of the link between repealing mask mandates, indoor dining and increased coronavirus cases. This is after many states have announced plans to decrease virus restrictions.

“Increases in both daily death rates and Covid cases and deaths slowed significantly within 20 days of putting mask mandates into place, and protective effective mask mandates grew stronger over time. In contrast, increases in daily death rates of Covid-19 cases and deaths grew more quickly within 40 to 80 days, following restaurants being allowed to resume on-premises dining.” “It may seem tempting in the face of all of this progress to try to rush back to normalcy as if the virus is in the rearview mirror. It’s not. Now, years of watching football on TV has shown me that it’s better to spike the football once you’re safely in the end zone, not after you’ve made a couple of completions.”

At a Friday briefing, the Centers for Disease Control and Prevention warned of the link between repealing mask mandates, indoor dining and increased coronavirus cases. This is after many states have announced plans to decrease virus restrictions.CreditCredit…Kendrick Brinson for The New York Times

As officials in Texas and Mississippi lifted statewide mask mandates, researchers at the Centers for Disease Control and Prevention offered fresh evidence of the importance of mask use in a new study on Friday. Wearing masks, the study reported, was linked to fewer infections with the coronavirus and Covid-19 deaths in counties across the United States.

The researchers also found that counties opening restaurants for on-premises dining — indoors or outdoors — saw a rise in daily infections about six weeks later, and an increase in Covid-19 death rates about two months later.

The study does not prove cause and effect, but the findings square with other research showing that masks prevent infection and that indoor spaces foster the spread of the virus through aerosols, tiny respiratory particles that linger in the air.

“You have decreases in cases and deaths when you wear masks, and you have increases in cases and deaths when you have in-person restaurant dining,” Dr. Rochelle Walensky, the director of the C.D.C., said on Friday. “And so we would advocate for policies, certainly while we’re at this plateau of a high number of cases, that would listen to that public health science.”

The findings come as city and state officials nationwide grapple with growing pressure to reopen schools and businesses amid falling rates of new cases and deaths. Officials recently began allowing limited indoor dining at New York City restaurants. And on Thursday, Connecticut’s governor said the state would end capacity limits on restaurants, gyms and offices later this month. Masks will still be required in both places.

Coronavirus cases and deaths are down significantly across the country compared to the devastating peaks around the holidays. But as more cases of worrisome virus variants have been detected and the U.S. vaccination campaign continues, President Biden and his team have stressed in recent days that now is not the time for Americans to relax, particularly on wearing masks.

The seven-day average of new cases was about 61,000 per day as of Friday, the lowest average since October, according to a New York Times database. But that number was still close to last summer’s highest peak.

Fatalities are falling, too, in part because of vaccinations at nursing homes. Yet the nation is still routinely reporting 2,000 deaths in a single day.

Mr. Biden on Wednesday criticized the decisions by the governors of Texas and Mississippi to lift statewide mask mandates and reopen businesses without restrictions, calling the plans “a big mistake” that reflected “Neanderthal thinking.”

The president, who has asked the American people to wear a mask for his first 100 days in office, said it was critical for public officials to follow the guidance of doctors and public health leaders as the vaccination campaign gains momentum.

According to the C.D.C., about 54 million people had already received at least one dose of a Covid-19 vaccine as of Thursday. Mr. Biden’s power to enforce mask-wearing is limited to the federal sphere; he has ordered a mask requirement for anyone on federal property, and his administration is asking people to wear masks regardless of local mandates.

“It may seem tempting, in the face of all of this progress, to try to rush back to normalcy as if the virus is in the rear view mirror. It’s not,” Andy Slavitt, a White House pandemic adviser, said on Friday. “Why somebody wouldn’t take advantage of a small intervention to save people’s lives, that would be surprising.”

In the latest study, C.D.C. researchers examined the association between mask mandates and indoor or outdoor restaurant dining and the number of coronavirus infections and deaths last year between March 1 and Dec. 31. The agency relied on county-level data from state government websites and measured daily percentage growth in coronavirus cases and deaths.

Infections and deaths declined after counties required mask use, the agency found. Daily infections rose about six weeks after counties allowed restaurants to open for dining on the premises, and death rates followed two months later.

Mask mandates were linked to statistically significant decreases in coronavirus cases and death rates within 20 days of implementation, the report’s authors concluded. On-premises dining, whether indoors or outdoors, at restaurants was associated with increases in case and death rates within 41 to 80 days after reopenings.

“State mask mandates and prohibiting on-premises dining at restaurants help limit potential exposure to SARS-Cov-2, reducing community transmission of Covid-19,” the authors wrote.

Shortly after publishing the report, the C.D.C. amended it to urge restaurants that resume on-premises dining to follow the C.D.C.’s guidelines for reducing transmission in restaurant settings.

That includes “everything from having staff stay home when they show signs of Covid or have tested positive or been in contact with someone who has Covid, and requiring masks among employees as well as customers who are not actively eating or drinking,” said Gery P. Guy, a health scientist with the C.D.C.’s Covid response team and the study’s corresponding author.

Other steps that can be taken are ensuring adequate ventilation, providing options to eat outdoors, spacing customers six feet apart, encouraging hand washing and frequent sanitizing of surfaces that are touched a lot, such as cash registers, pay terminals, door handles and tables.

“The message is, if restaurants are going to open for on-premise dining, it’s important to follow C.D.C. guidelines to do so safely and effectively,” Dr. Guy said.

Eileen Sullivan contributed reporting.

United States › United StatesOn March 5 14-day change
New cases 65,681 –12%
New deaths 2,483 –5%
World › WorldOn March 5 14-day change
New cases 442,743 +4%
New deaths 10,771 –12%

U.S. vaccinations ›

Where states are reporting vaccines given

A health club in Scottsdale, Ariz., in December. Gov. Doug Ducey announced on Friday a loosening of Covid-19 restrictions but said mask use is still recommended in the state.Credit…Adriana Zehbrauskas for The New York Times

Gov. Doug Ducey of Arizona signed an executive order on Friday that ends capacity limits on businesses, but he said that they were still required to follow health and safety guidance, including mask use, from the state’s Department of Health.

By ending occupancy restrictions on businesses, Mr. Ducey, a Republican, has joined a growing number of governors who are lifting measures even as the Centers for Disease Control and Prevention continues to warn officials that doing so could be premature.

Also on Friday, Gov. Henry McMaster of South Carolina signed an executive order lifting the state’s mask mandate in government buildings. Mr. McMaster, a Republican, cited vaccines and lower infection rates in the state as reasons to lift the mandate. Mr. McMaster recommended in his order that restaurants and other food establishments continue to require mask use and social distancing.

The California Department of Public Health also loosened some restrictions Friday saying amusement parks and outdoor sports and live events at stadiums can restart on April 1, with reduced capacity and mandatory masks.

Like many states, Arizona has recorded a steep decline in coronavirus cases since they peaked in January, according to a New York Times database. Mr. Ducey’s decision on Friday to ease some restrictions comes after his Republican peers in Texas and Mississippi lifted their state’s mask mandates, despite pleas from the Biden administration that it was critical that people continue wearing masks and as a new report from the C.D.C. found that counties that allowed restaurants to open for in-person dining had a rise in daily infections weeks after. The study also said that counties that issued mask mandates reported a decrease in virus cases and deaths within weeks.

The question of when it’s safe for states to reopen has been complicated by the emergence of more contagious and possibly more lethal variants in the United States, like B.1.1.7, originally identified in Britain. In Carver County, Minn., which has a population of about 91,000, at least 68 cases of the variant have been linked to participants in both school-sponsored and club sports activities, according to the Minnesota Department of Public Health. High schools and middle schools in Minnesota began opening up for some in-person learning in February.

Govs. Kay Ivey of Alabama and Mike DeWine of Ohio, both Republicans, are also taking more measured approaches. Ms. Ivey announced on Thursday that she was extending her state’s mask order until April 9. Mr. DeWine said on the same day that he would lift all public health measures aimed at curbing the virus in Ohio once new cases drop to a certain threshold.

This week, Mr. Ducey also issued an executive order requiring schools to offer in-person learning no later than March 15. According the C.D.C., 12 of Arizona’s 15 counties, including the state’s two largest counties — Maricopa and Pima, are in phases where all schools are safe to reopen.

Over the summer, when Arizona led the nation in the number of cases per person, Mr. Ducey gave city and county officials the green light to order residents to wear masks. It was a reversal for Mr. Ducey, who had been among a cadre of Republican governors who bucked mask-wearing, seeing it as a violation of individual liberties.

At the time, Mr. Ducey also rolled back earlier reopenings, and he directed bars, indoor gyms, water parks and movie theaters to shut down again.

About a month after Mr. Ducey embraced mask use, the number of Arizonans hospitalized with the virus started to decline.

The latest Arizona order states that mayors and local entities cannot put into effect measures that shut down businesses, and that major league sports can start up again if they get approval from the state’s Department of Health Services.

“Today’s announcement is a measured approach; we are not in the clear yet,” Mr. Ducey said in a statement on Friday. “We need to continue practicing personal responsibility. Wear a mask. Social distance. Stay home when you’re sick and wash your hands frequently.”

Disneyland in Anaheim, Calif., has been closed since March 14.Credit…Mario Tama/Getty Images

The teacups could soon be spinning again: Disneyland, which has been closed for a year, is poised to reopen this spring.

California officials announced on Friday that theme parks in the state could reopen on a limited basis as soon as April 1. Eligibility, however, will depend on coronavirus transmission statistics in individual counties.

For instance, theme parks in counties where the virus threat remains the most severe (in the purple tier under the state’s system) must remain closed. But parks in areas where the threat of infection has eased somewhat (red tier) will be allowed to reopen at 15 percent capacity. Even less threat (orange tier) will allow for 25 percent capacity.

Attendance will be limited to in-state visitors.

Disneyland is in Orange County, which is in the purple tier. But if coronavirus cases continue to decline in Southern California at the current pace, the county could fall within the orange tier by late April. The Walt Disney Company said last year that reopening a park at less than 25 percent capacity would not make economic sense. A Disney spokeswoman declined to comment on a specific reopening timeline on Friday.

“We are encouraged that theme parks now have a path toward reopening this spring, getting thousands of people back to work,” Ken Potrock, Disneyland’s president, said in a statement.

Disney has said it would take at least four weeks to rehire employees and train them on new coronavirus safety procedures. Before the pandemic, roughly 32,000 people worked at the 486-acre Disneyland Resort, which includes two separately ticketed theme parks, three Disney-owned hotels and an outdoor shopping mall. Most of the Anaheim complex has been closed for a year.

Disney had hoped to reopen its California attractions in July. But unions representing Disneyland employees criticized that timetable as too fast and pressured Gov. Gavin Newsom to withhold approval. He sided with the unions, prompting fans to attack him online. (“Open Disney, or we are taking away your hair gel.”)

In contrast, Florida allowed Disney to reopen its Orlando parks in July. The company endured withering criticism for doing so, but stringent safety procedures, including mandatory masks, resulted in a safer-than-expected environment.

“It has been a success story,” Julee Jerkovich, a United Food & Commercial Workers official, said in October. “As a union rep, I do not say that lightly.”

In addition to Disneyland, theme parks in California include Universal Studios Hollywood, Six Flags Magic Mountain, Knott’s Berry Farm and the Santa Cruz Boardwalk.

Workers checking syringes at a factory in Ballabgarh, India, last month.Credit…Rebecca Conway for The New York Times

As countries jostle to secure enough vaccine doses to help put an end to the pandemic, a new competition is unfolding: for syringes to administer them with.

There is simply not enough of them.

Officials in the United States and the European Union have said they need more. And in January, Brazil restricted exports of syringes and needles when its vaccination efforts fell short.

Further complicating the challenge, not just any syringe will do the trick.

Japan revealed last month that it might have to discard millions of doses of the Pfizer-BioNTech vaccine if it couldn’t secure enough syringes able to draw out a sixth dose from vials. In January, the Food and Drug Administration advised health care providers in the United States that they could extract more doses from the Pfizer vials after hospitals there discovered that some contained enough for a sixth — or even a seventh — shot.

“A lot of countries were caught flat-footed,” said Ingrid Katz, the associate director of the Harvard Global Health Institute.

The world needs between eight billion and 10 billion syringes for Covid-19 vaccinations alone, experts say.

In previous years, only 5 percent to 10 percent of the estimated 16 billion syringes used worldwide were meant for vaccination and immunization, said Prashant Yadav, a senior fellow at the Center for Global Development, a think tank in Washington, and an expert on health care supply chains.

Wealthier nations like the United States, Britain, France and Germany pumped billions into developing the vaccines, but little public investment has gone into expanding manufacturing for syringes, Mr. Yadav said.

The industry has ramped up to meet demand.

Becton, Dickinson and Company, which is the world’s largest manufacturer of syringes and is based in New Jersey, said it was producing 2,000 each minute to meet orders of more than a billion.

The United States is the world’s largest syringe maker by sales, according to Fitch Solutions, a research firm. The United States and China are neck and neck in exports, with combined annual shipments worth $1.7 billion.

While India is a small player globally, Hindustan Syringes & Medical Devices in Ballabgarh, one of the world’s largest syringe makers, sunk millions of dollars into preparing its syringe factories for the vaccination onslaught.

Rajiv Nath, the company’s managing director, added 500 workers to his production lines, which crank out more than 5,900 syringes per minute at factories spread over 11 acres in a dusty industrial district outside New Delhi. With Sundays and public holidays off, the company churns out nearly 2.5 billion a year, and plans to scale up to three billion by July.

Mr. Nath has sold 50 million to the Japanese government, he said, and over 400 million to India for its Covid-19 vaccination drive, one of the largest in the world.

More are waiting in line, including UNICEF. In November, the United Nations agency for children reached out to say that it was desperately seeking syringes. And not just any would do. They had to be smaller than usual, and break if used a second time, to prevent spreading disease through accidental reuse.

Most important: UNICEF needed them in vast quantities. Now.

“I thought, ‘No issues,’” said Mr. Nath. “We could deliver it possibly faster than anybody else.”

The company is set to begin shipping 3.2 million of those syringes soon, UNICEF said, provided they clear another quality check. And Mr. Nath has offered to produce about 240 million more.

Credit…

The images above tell a story of disparity of the starkest sort.

“People of color are getting vaccinated at rates below their representation of the general population,” Dr. Marcella Nunez-Smith, the chair of President Biden’s coronavirus equity task force, said at a recent forum on the vaccine. “This narrative can be changed. It must be changed.”

In recent days, The New York Times’s graphics team set out to measure how equitably Covid-19 vaccines were being distributed across the United States.

The data is imperfect. As of March 3, only 38 states publicly shared race and ethnicity data for vaccinated people.

Further complicating the task, different jurisdictions define race and ethnicity categories in slightly different ways — and with different levels of completeness. In some states, as much as a third of vaccinations were missing race and ethnicity data.

But a disturbing portrait nevertheless emerged.

Communities of color, which have borne the brunt of the Covid-19 pandemic in the United States, have also received a smaller share of available vaccines. The vaccination rate for Black Americans is half that of white people, and the gap for Hispanic people is even larger, The Times analysis found.

Dr. Eva Galvez prepares to test patients for Covid-19 at a clinic in Hillsboro, Ore.Credit…Ruth Fremson/The New York Times

Scientists in Oregon have identified a homegrown version of a fast-spreading variant of the coronavirus that first surfaced in Britain — but this one has a mutation that may make the variant less susceptible to vaccines.

The researchers have so far found just a single case of this formidable combination, but genetic analysis suggested that the variant had been acquired in the community and did not arise in the patient.

“We didn’t import this from elsewhere in the world — it occurred spontaneously,” said Brian O’Roak, a geneticist at Oregon Health and Science University who led the work. He and his colleagues participate in the Centers for Disease Control and Prevention’s effort to track variants, and they have deposited their results in databases shared by scientists.

The variant originally identified in Britain, called B.1.1.7, has been spreading rapidly across the United States, and accounts for at least 2,500 cases in 46 states. This form of the virus is both more contagious and more deadly than the original version, and is expected to account for most infections in America in a few weeks.

The new version that surfaced in Portland has the same backbone as B.1.1.7, and the mutation it carries — E484K, or “Eek” — is one seen in variants of the virus circulating in South Africa, Brazil and New York City.

Lab studies and clinical trials in South Africa indicate that the Eek mutation renders the current vaccines less effective by blunting the body’s immune response. (The vaccines still work, but the findings are worrying enough that Pfizer-BioNTech and Moderna have begun testing new versions of their vaccines designed to defeat the variant found in South Africa.)

The B.1.1.7 variant with Eek also has emerged in Britain, but the virus identified in Oregon seems to have evolved independently, Dr. O’Roak said.

Dr. O’Roak and his colleagues found the B.1.1.7 variant with Eek among coronavirus samples collected by the Oregon State Public Health Lab from an outbreak in a health care setting. Of the 13 test results they analyzed, 10 turned out to be B.1.1.7 alone, and one the combination.

Experts said the discovery was not surprising, because the Eek mutation has arisen in forms of the virus all over the world. But the mutation’s occurrence in B.1.1.7 is worth watching, they said.

Gov. Philip D. Murphy of New Jersey applauded as the state’s first doses of the Johnson & Johnson vaccine were administered at the Union Plaza Apartments in Union City, N.J., on Friday. Credit…Bryan Anselm for The New York Times

Vaccine hesitancy has been a concern among U.S. public health experts for months now. But evidence increasingly suggests that as vaccination rates increase, many unvaccinated Americans are becoming more comfortable with the idea of receiving the shot themselves.

The proportion of adults in the country who intend to get vaccinated has increased significantly over the last several months, according to a survey released Friday by the Pew Research Center. Sixty-nine percent of the public now plans to get vaccinated — or already has — up from 60 percent who said in November that they intended to pursue it.

The issue has become more partisan over time, however. The new survey finds a 27-percentage point political gap, with 83 percent of Democrats saying they plan to get the vaccine or have already received it, compared to just 56 percent of Republicans.

Despite the divides, the new survey bolsters optimism that overall, Americans are increasingly open to receiving the vaccine. About 54 million people — 16 percent of the population — had received at least one dose of a Covid-19 vaccine as of Thursday, according to the Centers for Disease Control and Prevention.

The survey also notes that 47 percent of Black Americans plan to get vaccinated and 15 percent say they already have been. Taken together, that is a sharp increase from the 42 percent who said in November they intended to be vaccinated.

Black and Latino people in the United States are being vaccinated at lower rates in part because they face obstacles like language barriers and inadequate access to digital technology, medical facilities and transportation. Mistrust in government officials and doctors also plays a role, experts say, and is fed by misinformation that is spread on social media. President Biden has made equity a major focus of his pandemic response, saying he wants pharmacies, mobile vaccination units and community clinics that help underserved communities to help increase the pace of vaccinations.

Overall, those surveyed by Pew who say they do not plan to get the vaccine cite reasons including concerns about side effects and a feeling that the vaccines were developed too quickly. Others say they are waiting for more information about how well they work.

The Pew results echo a survey released last week from the Kaiser Family Foundation that found vaccine hesitancy declining among most demographic groups. That survey also found a significant political gap, but noted that both Democrats and Republicans were significantly more likely to say they intended to get the vaccine now than in December.

Credit…Timothy A. Clary/Agence France-Presse — Getty Images

Since Johnson & Johnson revealed data showing that its vaccine, while highly protective, had a slightly lower efficacy rate than the ones produced by Moderna and Pfizer-BioNTech, health officials have feared that the new shot might be viewed by some Americans as the inferior choice.

But the early days of its rollout suggest something different: Some people are eager to get it because they want the convenience of a single shot.

And public health officials are enthusiastic about how much faster they can get the single-shot doses distributed, particularly in vulnerable communities that might not otherwise have access to vaccine.

“This is a potential breakthrough,” said Dr. Joseph Kanter, the top health official in Louisiana.

With its first allotted doses, that state is holding a dozen large Johnson & Johnson vaccination events at civic centers and other public places, modeled after what has worked for flu vaccines.

Only four million doses were shipped this week, and the company’s manufacturing lags mean that it will be at least a month before states start receiving significant supplies. But as Johnson & Johnson ramps up production over the next few months, Dr. Kanter said, the vaccine will allow his state to slash costs for staffing and operations related to second doses.

“The J. & J. vaccine brings a lot to the table,” he said.

Judged by how well it prevents severe disease, hospitalization and death, the Johnson & Johnson shot is comparable to those made by Moderna and Pfizer-BioNTech. And although it has a lower overall efficacy rate in the United States — 72 percent, compared with roughly 95 percent for the others — experts say that comparing those numbers is problematic because the companies’ trials were conducted in different places and at different times.

Besides being a single-dose shot, the Johnson & Johnson vaccine offers another benefit: It can be kept at normal refrigeration temperatures for three months. That makes it ideal for distribution at nonmedical sites such as stadiums and convention centers. The vaccine has caused a surge of excitement at small, independent pharmacies, too.

Many state health officials said they were focused on getting the vaccine to people who might be harder to reach for a second dose, such as those who are homeless or on the verge of release from prison.

Patricia Cooper, a teacher in Washington, D.C., said that President Donald J. Trump’s efforts to claim credit for a vaccine last year and the label “emergency use authorization” had suggested to her that the federal government may have rushed its reviews of vaccines. That left her feeling jittery about their safety.

But Ms. Cooper said she was eager to get a shot, especially the Johnson & Johnson one.

“This one is more appealing to me,” she said. “Who likes to get stuck more than once?”

Pope Francis in the Our Lady of Salvation church in Baghdad on the first day of his papal visit to Iraq.Credit…Ivor Prickett for The New York Times

Pope Francis made an audacious return to the world stage in the midst of the pandemic on Friday when he became the first leader of the Roman Catholic church to visit Iraq, seeking to help heal a nation uniquely wounded by violent sectarianism, foreign adventurism and the persecution of minority populations, including his own Christian flock.

“I’m happy to travel again,” Francis, who has been vaccinated against the coronavirus, said after taking off his blue surgical mask to address reporters on the papal plane.

The pope’s trip sent a message that, after a year of being cooped up in Rome and fading from public consciousness, Francis wanted to elevate his profile and spend his time with those who have suffered the most.

The pope’s visit coincided with a recent return of suicide bombings, increased rocket attacks and renewed geopolitical tensions, and some of Francis’ admirers worry that his whirlwind four-day visit will exacerbate a recent spike in the country’s coronavirus cases by drawing crowds.

But his advisers and Iraq’s top prelates insisted social distancing measures would be followed and argued the trip was necessary to show Francis’ closeness to a flock that had suffered terribly. The pope’s predecessors dreamed of visiting, but those aspirations were dashed by tensions and conflict.

The pope called for an equitable distribution of vaccines to countries already scarred by “fragility and instability.” A vaccination program began just this week in Iraq, where social distancing restrictions are largely ignored.

Credit…Ivor Prickett for The New York TimesGov. Andrew M. Cuomo at a briefing on the pandemic a year ago. His thorough, sometimes folksy daily updates drew national attention. Credit…Cindy Schultz for The New York Times

Top aides to Gov. Andrew M. Cuomo were alarmed: A report written by state health officials had just landed, and it included a count of how many nursing home residents in New York had died in the pandemic.

The number — more than 9,000 by that point in June — was not public, and the governor’s most senior aides wanted to keep it that way. They rewrote the report to take it out, according to interviews and documents reviewed by The New York Times.

The extraordinary intervention, which came as Mr. Cuomo was starting to write a book on his pandemic achievements, was the earliest act yet known in what critics have called a monthslong effort by the governor and his aides to obscure the full scope of nursing home deaths in the state. The episode reflects the lengths to which Mr. Cuomo has gone to control data, brush aside public health expertise and bolster his position as a national leader in the fight against the coronavirus.

The details contradict the timeline and motivation Mr. Cuomo offered in recent weeks, when he released the complete data after the state attorney general, Leticia James, revealed that thousands of deaths of nursing home residents had been undercounted, Mr. Cuomo said he had withheld the information out of concern that the Trump administration might pursue a politically motivated inquiry into the state’s handling of the outbreak in nursing homes.

But the rewriting of the report came well before requests for data arrived from federal authorities, and was accompanied by Cuomo aides’ battles with top state health officials, according to documents and interviews with six people with direct knowledge of the discussions, who requested anonymity to describe the closed-door debates.

The aides involved in changing the report included Melissa DeRosa, the governor’s top aide; Linda Lacewell, the head of the state’s Department of Financial Services; and Jim Malatras, a former top adviser to Mr. Cuomo brought back to work on the pandemic. None had public health expertise.

In response to a detailed list of questions from The Times sent on Tuesday, the governor’s office responded with a statement Thursday night from Beth Garvey, a special counsel, who said “the out-of-facility data was omitted after D.O.H. could not confirm it had been adequately verified.” She added that the additional data did not change the conclusion of the report.

Senator Joe Manchin walks to the Senate Chambers on Friday.Credit…Anna Moneymaker for The New York Times

Top Democrats reached a deal late Friday to scale back weekly unemployment payments in President Biden’s $1.9 trillion stimulus plan, working to preserve moderate support for the package by dropping their effort to increase those payments to $400 and agreeing on a $300 supplement instead.

The agreement came about nine hours after Senator Joe Manchin III of West Virginia, a centrist Senate Democrat, created an impasse by raising concerns that an overly generous benefit could discourage people from returning to work. The impasse paralyzed efforts to move Mr. Biden’s stimulus bill through the Senate, and the vote dragged on past midnight.

By late Friday, Democrats had reached a compromise that appeared to satisfy Mr. Manchin, a crucial swing vote in an evenly divided Senate. While Mr. Manchin is a Democrat, his state is decidedly not (former President Donald J. Trump won nearly 70 percent of the vote in the 2020 election). As a result, Mr. Manchin is among the most centrist Democrats in the party.

The amendment ultimately passed, 50 to 49, just before 1:30 a.m. Saturday as the Senate barreled through a stretch of amendment votes that would modify the legislation even further. Most of the amendments failed on party lines.

The agreementwould extend the existing $300 jobless benefit through Sept. 6, and make up to $10,200 of unemployment benefits received last year tax-free for households with incomes less than $150,000. It would also extend tax rules regarding excess business loss limitations for one additional year, through 2026.

“The president has made it clear we will have enough vaccines for every American by the end of May, and I am confident the economic recovery will follow,” Mr. Manchin said in a statement. “We have reached a compromise that enables the economy to rebound quickly while also protecting those receiving unemployment benefits” from being hit with unexpected tax bills.

Top Democrats had initially planned to drop their effort to increase the payments to $400 but extend them for an additional month, through Oct. 4. The agreement reached with Mr. Manchin shaves one month off that extension.

The impasse had halted the measure just as the Senate began voting on proposed changes. What was supposed to have been a 15-minute vote on a minimum-wage increase stretched for hours as Democrats stalled for time, huddling on the Senate floor in search of a solution.

The White House declined to say whether Mr. Biden had reached out to Mr. Manchin to try to secure his support.

In a statement, Jen Psaki, the White House spokeswoman, said that Mr. Biden “supports the compromise agreement.”

The proposal was one of dozens that the Senate considered in a marathon session of rapid-fire votes that was delayed by the impasse. The vote-a-rama, as it is known, stretched past midnight and would pave the way for a Senate vote to pass the stimulus plan as early as Saturday.

Democrats are racing against the clock, as some Americans have already begun to file their taxes and unemployment benefits are set to begin lapsing next weekend. Once the legislation clears the Senate, it will have to be approved for a second time in the House before it heads to Mr. Biden’s desk.

The compromise was aimed at appeasing centrist Democrats who might otherwise have been tempted to vote for a Republican amendment by Senator Rob Portman of Ohio to keep the unemployment benefit at $300 per week — extending it until July but omitting any tax sweeteners — thus sapping support for the bill among other Democrats.

Republican efforts to slow action on the Senate floor were expected to have little effect on the final legislation. Another wrinkle arose late Friday when Senator Dan Sullivan, Republican of Alaska, left the Capitol to catch a flight to Fairbanks and attend his father-in-law’s funeral.

A spokesman, Nate Adams, confirmed the senator’s departure and said Mr. Sullivan “intended to vote against final passage of the bill and made his opposition clear” by voting against advancing the measure.

In an evenly divided Senate, Mr. Sullivan’s absence could give Democrats an extra vote of leeway as they haggle over last-minute changes to the $1.9 trillion package.

Each party holds 50 seats in the chamber, giving Democrats a one-vote margin of control thanks to Vice President Kamala Harris’s power to break ties. Senate Democrats, having already made significant revisions to the text the House approved over the weekend, are working to remain united. Republicans are expected to oppose the bill en masse, arguing that it is too costly and not targeted enough.

VideoVideo player loadingPrime Minister Justin Trudeau announced on Friday that Canada’s health regulator had authorized the use of Johnson & Johnson’s single-dose vaccine, giving the country a fourth vaccine option.CreditCredit…Paul Chiasson/The Canadian Press, via Associated Press

Canada’s health regulator on Friday authorized the use of Johnson & Johnson’s single-dose vaccine. The move now gives the country, which has experienced a slow start to vaccinations, four inoculations to choose from.

“This is great news,” Prime Minister Justin Trudeau said at a news conference. He offered no projected date for the first deliveries.

Health Canada officials said that the vaccine has an overall effectiveness of 66.9 percent, much lower than the efficacy rates reached by Pfizer and Moderna vaccines. But it is similar to those vaccines in having a powerful ability to prevent severe disease, hospitalizations and death.

The United States and Bahrain have also authorized the Johnson & Johnson vaccine.

Production delays with the Pfizer and Moderna vaccines, combined with relatively modest initial shipments, have led to frustration among many Canadians — and put political pressure on Mr. Trudeau as Canada’s vaccination rate fell far behind that of the United States, Britain and other countries. As of Friday, 2.86 percent of all Canadians have received at least one dose.

Canada has ordered 10 million doses of the Johnson & Johnson vaccine and has options for another 28 million, a combined number that is slightly higher than the country’s population.

Depending on its arrival and combined with the need to only administer a single shot, the new vaccine may help significantly boost the country’s vaccination rate. The Johnson & Johnson vaccine also does not require extremely low storage temperatures, as the Pfizer vaccine does, making it easier to distribute to remote communities in Canada’s north.

Mr. Trudeau said that Pfizer would send 1.5 million doses, originally scheduled for delivery in the summer, over the next two months. Canada also received its first shipment this week of a version of the AstraZeneca vaccine, developed by the Serum Institute of India.

The Canadian government had initially promised to obtain six million doses of vaccines by the end of March. The new Pfizer schedule combined with AstraZeneca shipments, officials said, will raise that figure to eight million.

President Biden visiting a Covid-19 vaccination center in Bethesda, Md. Credit…Oliver Contreras for The New York Times

President Biden is enjoying a level of popularity his poll-obsessed predecessor never came close to achieving — a 60 percent approval rating — with 70 percent of Americans expressing support for his handling of the coronavirus pandemic, according to a new poll.

Despite enduring and stark partisan divisions, 44 percent of Republicans approve of Mr. Biden’s actions prioritizing the fight against the virus, according to an Associated Press-NORC Center for Public Affairs Research poll released early Friday.

As a temperature check of the current national mood, the poll suggests that Republican lawmakers in Washington, who have united to oppose Mr. Biden’s $1.9 trillion coronavirus relief bill, are not swaying public opinion, despite their efforts to alter or delay its passage.

In all, 22 percent of Republicans approve of Mr. Biden’s performance, suggesting small but substantial gains among his most hard-core opponents that could give him added political leverage, paving the way for the possibility of a big bipartisan deal on infrastructure.

Mr. Biden’s overall approval among Democrats is a solid 94 percent, despite recent criticism from progressives.

Mr. Trump sustained a similar level of support from his base, but is the only president in the history of modern polling to never post an aggregate approval rating above 50 percent. His level of support has sunk, to an average of about 38 percent, after the Jan. 6 attack on the Capitol.

Friday’s poll is a bit sunnier than other recent national surveys that show a slight decrease in support for Mr. Biden as the fight over his relief package heats up on Capitol Hill. A RealClearPolitics aggregation of polls put his approval rating at 53.4 percent, not factoring in the A.P. poll.

Mr. Biden’s grades on the economy were lower than his ratings on other issues, the poll found. His approval on pocketbook issues was 55 percent. Only 17 percent of Republicans, a group that gave former President Donald J. Trump high marks for his handling of the economy even during the pandemic-related downturn, approved of Mr. Biden’s approach to the economy.

The A.P. poll, unsurprisingly, found that the atmosphere of hyper partisanship exacerbated by Mr. Trump’s four years of provocation is not subsiding under Mr. Biden, and that people in both parties tend to interpret fact through the filter of ideology.

Americans’ views on the economy have shifted dramatically even though many basic economic statistics have budged little, if at all.

In December, 67 percent of Republicans and just 15 percent of Democrats described the economy as “good,” according to an A.P. poll taken at the time. Now, 35 percent of Republicans and 41 percent of Democrats describe the economy in positive terms.

The poll, which surveyed 1,434 adults between Feb. 23 and March 1, has an overall sampling error of plus or minus 3.4 percentage points.

A beach in Limassol, Cyprus, on Thursday. Some European nations with economies that are heavily reliant on tourism have pushed for a vaccine certificate program to help open up international travel.Credit…Petros Karadjias/Associated Press

Cyprus has announced a plan to allow vaccinated residents of Britain to visit the island beginning in May, a further signal that countries, particular those dependent on tourism, could resort to inoculation certificates to reopen their borders.

Savvas Perdios, the deputy tourism minister for Cyprus, told the Cyprus News Agency that, as of May 1, British citizens who had received two doses of a vaccine approved by the European Union’s drug regulator would be allowed to travel to the Mediterranean island without having to be tested for the coronavirus or to isolate on arrival.

Some European nations with economies that are heavily reliant on tourism, such as Spain, have advocated for a vaccine certificate program to be created at the European Union level but have also said that they could adopt bilateral systems if no broader agreement is reached. The European Commission, the bloc’s executive arm, this week announced plans to create a “digital green pass” to facilitate safe travel among member nations, though that system is expected to take at least three months.

The British authorities have said that talks on opening up travel are underway with a number of countries, including some in the European Union.

Matt Hancock, the British health secretary, said this week, “If another country wants to say that you need to have been vaccinated with a recognized vaccine to travel there, we want to enable Brits to be able to take that journey.”

More than a million travelers from Britain visited Cyprus in 2019, representing by far the highest number of international tourists to the island, according to official statistics.

Despite the green light from Cyprus, international travel from Britain is forbidden for leisure purposes until at least May 17 under the current lockdown rules, and it is unclear how many British residents will have received two vaccine doses by then. Fewer than a million people in Britain have so far been fully vaccinated.

In other news around the world:

  • South Korea’s drug safety agency approved the Pfizer-BioNTech vaccine on Friday and doses for about 23 million people are expected to begin arriving this month, the news agency Yonhap reported. The country, which has a population of about 51 million, began its vaccination program last week as part of a plan to achieve herd immunity by November. South Korea approved the Oxford-AstraZeneca vaccine in February and expects to receive more than two million doses through Covax, an international group that has negotiated for coronavirus shots.

  • Prime Minister Jacinda Ardern of New Zealand has said that a snap lockdown imposed last week on the country’s largest city, Auckland, will end on Sunday morning. Social gatherings will be capped at 100 people and other restrictions will remain in place. The lockdown was imposed after the authorities discovered an untraceable case. They have since conducted more than 50,000 tests and tracked more than 6,000 contacts.

  • Japan has extended its state of emergency for the greater Tokyo metropolitan area until March 21, the government announced on Friday, according to the national broadcaster NHK. Emergency orders were lifted in six other prefectures. The restrictions, which include an order for restaurants and bars to close by 8 p.m., had been scheduled to end on Sunday.

Some gorillas in a troop at the San Diego Zoo tested positive for the coronavirus in January. Zoo officials have been using an experimental vaccine on other apes, like orangutans and bonobos. Credit…Ken Bohn/San Diego Zoo Global, via, via Reuters

The San Diego Zoo has given nine apes an experimental coronavirus vaccine developed by Zoetis, a major veterinary pharmaceuticals company.

In January, a troop of gorillas at the zoo’s Safari Park tested positive for the virus. All are recovering, but even so, the zoo requested help from Zoetis in vaccinating other apes. The company provided an experimental vaccine that was initially developed for pets and is now being tested in mink.

Nadine Lamberski, a conservation and wildlife health officer at San Diego Zoo Global, said the zoo vaccinated four orangutans and five bonobos with the experimental vaccine, which is not designed for use in humans. Among the vaccinated orangutans was an ape named Karen, who made history in 1994 when she became the first orangutan to have open-heart surgery.

Dr. Lamberski said one gorilla at the zoo was also scheduled to be vaccinated, but the gorillas at the wildlife park were a lower priority because they had already tested positive for infection and had recovered. She said she would vaccinate the gorillas at the wildlife park if the zoo received more doses of the vaccine.

Mahesh Kumar, senior vice president of global biologics for Zoetis, said the company is increasing production, primarily for its pursuit of a license for a mink vaccine, and will provide more doses to the San Diego and other zoos when possible. “We have already received a number of requests,” he said.

Infection of apes is a major concern for zoos and conservationists. They easily fall prey to human respiratory infections, and common cold viruses have caused deadly outbreaks in chimpanzees in Africa. Genome research has suggested that chimpanzees, gorillas and other apes will be susceptible to SARS-CoV-2, the virus that has caused the pandemic. Lab researchers are using some monkeys, like macaques, to test drugs and vaccines and develop new treatments for the virus.

Scientists are worrying not just about the danger the virus poses to great apes and other animals, but also about the potential for the virus to gain a foothold in a wild animal population that could become a permanent reservoir and emerge at a later date to reinfect humans.

Infections in farmed mink have produced the biggest scare so far. When Danish mink farms were devastated by the virus, which can kill mink just as it kills people, a mutated form of the virus emerged from the mink and reinfected humans. That variant showed resistance to some antibodies in laboratory studies, raising suspicion that vaccines might be less effective against it.

That virus variant has not been found in humans since November, according to the World Health Organization. But other variants have emerged in people in several countries, proving that the virus can become more contagious and in some cases can diminish the effectiveness of some vaccines.

Denmark ended up killing as many as 17 million mink — effectively wiping out its mink farming industry. In the United States, thousands of mink have died, and one wild mink has tested positive for the virus.

Although many animals, including dogs, domestic cats, and big cats in zoos, have become infected by the virus through natural spread, and others have been infected in laboratory experiments, scientists say that widespread testing has yet to find the virus in any animal in the wild other than the one mink.

National Geographic first reported the vaccination of the apes at the San Diego Zoo.

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Health

The Virus Unfold The place Eating places Reopened or Masks Mandates Have been Absent

Even as officials in Texas and Mississippi lifted statewide mask mandates, researchers from the Centers for Disease Control and Prevention provided new evidence on the importance of face covering, reporting that mask mandates were associated with fewer infections with the coronavirus and Covid. 19 deaths in counties in the United States.

Federal researchers also found that districts that opened restaurants for on-site meals – indoors or outdoors – saw an increase in daily infections about six weeks later and an increase in death rates from Covid-19 about two months later.

The study doesn’t establish cause and effect, but the results agree with other research showing that masks prevent infection and that indoor spaces encourage the spread of the virus through aerosols, tiny particles of breath that linger in the air.

“You have fewer cases and deaths when you wear masks, and you have more cases and deaths when you dine in person,” said Dr. Rochelle P. Walensky, director of the CDC, on Friday. “And so we would advocate for policy, certainly while we are on this plateau of high numbers of cases hearing this public health science.”

On Friday evening, the National Restaurant Association, which represents one million restaurants and restaurants, criticized the CDC study as “an ill-informed attack on the industry hardest hit by the pandemic”. It was suggested that the researchers failed to control factors other than restaurant food – such as shop closures and other policies – that may have contributed to coronavirus infections and deaths.

“If a positive correlation is found between ice cream sales and shark attacks, it would not mean ice cream is causing shark attacks,” the association said in a statement.

The group also accused federal researchers of failing to measure compliance with safe operating protocols, noting that the investigation did not distinguish between indoor and outdoor dining, nor did it determine whether restaurants had followed removal recommendations or had adequate ventilation decreed.

“It is irresponsible to limit the spread of Covid-19 to a single industry,” said the association.

The findings come from city and state officials nationwide grappling with growing pressure to reopen schools and businesses amid falling rates of new cases and deaths. Officials recently allowed limited indoor dining in New York City. On Thursday, the Connecticut governor said the state would end capacity restrictions on restaurants, gyms and offices later this month. Masks are still required in both regions.

“The study isn’t surprising,” said Joseph Allen, associate professor at Harvard’s TH Chan School of Public Health and director of the university’s healthy buildings program. “What is surprising is that we see some states ignoring all evidence and are quick to open up, removing mask mandates and opening up full meals.”

Other researchers said the new study confirms the idea that transmission of viruses is often through the air, that physical distancing may not be enough in some situations to stop the spread, and that masks at least partially block airborne particles.

President Biden’s health advisors have said over the past few days that this is not the time to relax. According to a New York Times database, the seven-day average of new cases on Thursday was 62,924 per day.

While that number is down 14 percent from two weeks earlier, new cases remain near the peaks reported last summer. Although the death toll has declined in part due to vaccination campaigns in nursing homes, it remains routine for 2,000 deaths to be reported in a single day.

Mr Biden on Wednesday criticized the decisions of Texas and Mississippi governors to lift statewide mask mandates and reopen businesses without restrictions, calling the plans “a major mistake” reflecting “Neanderthal thinking”.

The president, who asked Americans to wear masks during his first 100 days in office, said it was vital for officials to follow directions from doctors and public health executives as the coronavirus vaccination campaign picks up . By Thursday, around 54 million people had received at least one dose of a Covid-19 vaccine.

Updated

March 5, 2021, 7:20 p.m. ET

“With all this progress, it may seem tempting to try and get back to normal as if the virus was in the rearview mirror,” Andy Slavitt, White House advisor on the pandemic, said Friday. “It is not.”

CDC researchers examined the links between mask mandates, indoor or outdoor restaurants, and coronavirus infections and deaths in the past year between March 1 and December 31. The agency relied on county-level data from state government websites and measured the daily percentage change in coronavirus cases and deaths.

Infections and deaths declined after counties mandated the use of masks, the agency found. Daily infections rose about six weeks after the counties allowed restaurants to dine on the premises, and death rates followed two months later.

The report’s authors concluded that mask mandates were associated with a statistically significant decrease in coronavirus cases and death rates within 20 days of implementation. Eating in indoor or outdoor restaurants was linked to rising fall and death rates 41 to 80 days after reopening.

“Government mask mandates and the ban on dining in on-site restaurants help limit potential exposure to SARS-CoV-2 and reduce community transmission of Covid-19,” the authors wrote.

Shortly after the report was released, the CDC amended it, urging facilities resuming serving guests to follow authorities’ guidelines on reducing broadcast in restaurants.

What you need to know about the vaccine rollout

“The message is that it is important to follow CDC guidelines if restaurants are to be opened for on-site dining,” said Gery P. Guy, researcher on the CDC’s Covid Response Team and co-author of the study.

This includes “everything from employees who stay at home if they show signs of Covid or have tested positive or have been in contact with someone who has Covid, and masks for both employees and customers who are not actively eating or drink, are required, “Dr. Guy said.

Other steps include adequate ventilation, outdoor dining, a two-meter distance from customers, frequent hand washing and disinfection of surfaces that are touched frequently, such as cash registers or payment terminals, door handles and tables.

Even when restaurants limit capacity, an aerosol virus can build up if there is insufficient ventilation, said Dr. All.

“It doesn’t really matter if it’s a restaurant, spin class, gym or choir practice. If you’re inside with no masks, little or no ventilation, we know it’s a higher risk,” he said. “Aerosols for the airways are formed indoors. It’s that simple. This is a real problem for restaurants. “

Linsey Marr, an aerosol delivery expert at Virginia Tech, said Americans couldn’t be expected to follow the latest science and so many simply rely on what is open or closed as an indicator of what for sure is.

But indoor dining is especially risky, she added. People typically sit in a restaurant for an hour or more and don’t wear masks while eating, which makes them susceptible to viruses in the air.

“Limiting capacity will help reduce the risk of transmission, but eating indoors is still a high-risk activity until more people are vaccinated,” she said.

Restaurant workers are particularly exposed. While they can wear masks, guests don’t, reducing protection from the virus. And workers spend many hours indoors on each shift, said Dr. All.

He recommended that restaurant staff wear a double mask, wear a surgical mask covered with a cloth mask, or buy highly efficient masks like N95, which are usually reserved for healthcare workers, or KN95 or KF94 masks to make sure that they are not fake.

“This is not the time to let go of our watch and take back controls when we are so close that many people are being vaccinated,” said Dr. All.

Eileen Sullivan contributed to the coverage.

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Health

Why Do Virus Variants Have Such Bizarre Names?

20H / 501Y.V2.

VOC 202012/02.

B.1.351.

Those were the charming names that scientists had suggested for a new variant of the coronavirus identified in South Africa. The intertwined sequences of letters, numbers, and dots are of great importance to the scientists who developed them, but how is anyone else going to keep them straight? Even the easiest to remember B.1.351 refers to a completely different lineage of the virus if a single point is overlooked or misplaced.

Virus naming conventions were fine as long as variants remained esoteric research topics. But they are now the source of fear for billions of people. They need names that roll off the tongue without stigmatizing the people or places associated with them.

“What is challenging is to develop names that are unique, informative, without geographical references, and pronounced and memorable,” said Emma Hodcroft, molecular epidemiologist at the University of Bern in Switzerland. “It sounds a bit simple, but it really is a big question to convey all of this information.”

She and other experts said the solution was to develop a single system that anyone could use, but link it to the more technical ones that scientists rely on. The World Health Organization has set up a working group of a few dozen experts to find an easy and scalable way to achieve this.

“This new system will give worrying variants a name that is easy to pronounce and retrieve, and will minimize unnecessary negative effects on nations, economies and people,” the WHO said in a statement. “The proposal for this mechanism is currently undergoing internal and external partner review prior to its completion.”

The WHO’s leading candidate to date is disarmingly simple, according to two members of the working group: numbering the variants in the order in which they were identified – V1, V2, V3, etc.

“There are thousands and thousands of variants and we need a way to label them,” said Trevor Bedford, evolutionary biologist at the Fred Hutchinson Cancer Research Center in Seattle and a member of the research group.

Naming diseases has not always been that complicated. Syphilis, for example, comes from a poem from 1530 in which a shepherd, Syphilus, is cursed by the god Apollo. However, the compound microscope, invented around 1600, opened up a hidden world of microbes that allowed scientists to name them by their shapes, said Richard Barnett, a science historian in the UK.

Nevertheless, racism and imperialism infiltrated disease names. In the 1800s, as cholera spread from the Indian subcontinent to Europe, British newspapers called it “Indian Cholera” and depicted the disease as a figure in a turban and robes.

“Naming can very often reflect and expand a stigma,” said Dr. Barnett.

In 2015, WHO published best practices for disease naming: avoidance of geographic locations or names of people, animal or food species, and terms that create inappropriate fear, such as “fatal” and “epidemic”.

Scientists rely on at least three competing systems of nomenclature – Gisaid, Pango, and Nextstrain – each of which makes sense in its own world.

“You can’t track anything you can’t name,” said Oliver Pybus, an Oxford evolutionary biologist who helped design the Pango system.

Scientists name variants when changes in the genome coincide with new outbreaks, but they only draw attention to them when their behavior changes – for example if they are more easily transmitted (B.1.1.7, the variant first observed in the UK)) or if they at least partially bypass the immune response (B.1.351, the variant proven in South Africa).

Indications of the origin of the variant are coded in the mixed up letters and numbers: For example, the “B.1” indicates that these variants are related to the outbreak in Italy last spring. (As soon as the hierarchy of variants becomes too deep to accommodate another number and point, newer variants are given the next letter available alphabetically.)

Updated

March 2, 2021, 3:28 p.m. ET

However, when scientists announced that a variant called B.1.315 – two digits away from the variant first seen in South Africa – was spreading in the US, the South African Minister of Health was “quite confused between this and B.1.351 “Said Tulio de Oliveira, geneticist at the Nelson Mandela School of Medicine in Durban and a member of the WHO working group.

“We have to develop a system that not only evolutionary biologists can understand,” he said.

Since there are no easy alternatives, people have referred to B.1.351 as “the South African variant”. But Dr. de Oliveira asked his colleagues to avoid the term. (Look no further than the origins of this virus: call it the “China Virus” or the “Wuhan Virus”, which is causing xenophobia and aggression against people of East Asian origin worldwide.)

So serious is the potential harm that some countries have been discouraged from reporting if a new pathogen is discovered within their borders. Geographical names are also quickly becoming obsolete: B.1.351 is now represented in 48 countries, so calling it a South African variant is absurd, added Dr. de Oliveira added.

And practice could distort science. It’s not entirely clear that the variant originated in South Africa: it was identified there in large part thanks to the diligence of South African scientists, but if it is classified as a variant of that country, it could mislead other researchers, their possible route to South Africa from one another from overlooked country that sequenced fewer coronavirus genomes.

In the past few weeks, proposing a new system has become a kind of spectator sport. Some suggestions for name inspiration: hurricanes, Greek letters, birds, other animal names like squirrels or aardvarks, and local monsters.

Áine O’Toole, a graduate student at the University of Edinburgh who is part of the Pango team, suggested colors to indicate how different constellations of mutations are related.

“You could end up in dusty pink or magenta or fuchsia,” she said.

Sometimes it can be enough to identify a new variant by its characteristic mutation, especially if the mutations are given bizarre names. Last spring, Ms. O’Toole and her coworkers named D614G, one of the earliest known mutations, “Doug”.

“We kind of didn’t have a lot of human interaction,” she said. “That was our idea of ​​humor in Lockdown # 1.”

Other nicknames followed: “Nelly” for N501Y, a common thread in many new variants, and “Eeek” for E484K, a mutation that is said to make the virus less susceptible to vaccines.

But Eeek has appeared in multiple flavors around the world, underscoring the need for flavors to have different names.

The numbering system considered by the WHO is straightforward. However, new names must overcome the ease and simplicity of geographical designations for the general public. And scientists need to strike a balance between labeling a variant fast enough to forestall geographic names and being careful not to name insignificant variants.

“What I don’t want is a system where we have this long list of variants that all have WHO names, but really only three of them are important and the other 17 are not important,” said Dr. Bedford.

Whatever the final system, it must also be accepted by various groups of scientists as well as the public.

“If you don’t really become a lingua franca, things get more confusing,” said Dr. Hodcroft. “If you can’t come up with something that people can easily say, type, and remember, they’ll just go back to using the geographic name.”

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Health

Virus Variant in Brazil Contaminated Many Who Had Already Recovered From Covid-19

Within a few weeks, two variants of the coronavirus have become so popular that you can regularly hear their unfathomable alphanumeric names on the television news.

B.1.1.7, first identified in the UK, has demonstrated the ability to spread widely and quickly. In South Africa, a mutant called B.1.351 can evade human antibodies and affect the effectiveness of some vaccines.

Scientists have also kept an eye on a third variant that originated in Brazil and is called P.1. Research on P.1 had been slower since its discovery in late December, so scientists weren’t sure how much to worry about it.

“I held my breath,” said Bronwyn MacInnis, an epidemiologist at the Broad Institute.

Now three studies offer a sobering story of P.1’s meteoric rise in the Amazonian city of Manaus. It most likely occurred there in November and then led to a record spike in coronavirus cases. It came to dominate the city in part because of an increased risk of contagion, research found.

However, the ability to infect some people who had immunity to previous attacks from Covid-19 was also gained. And laboratory experiments suggest that P.1 could weaken the protective effects of a Chinese vaccine currently used in Brazil.

The new studies have yet to be published in scientific journals. Their authors warn that findings from cells in laboratories do not always translate into the real world, and they have only just begun to understand how P.1 behaves.

“The results apply to Manaus, but I don’t know if they apply to other locations,” said Nuno Faria, a virologist at Imperial College London who led much of the new research.

But even with the puzzles that existed around P.1, experts said it was a variant that should be taken seriously. “It is right to be concerned about P.1, and this data gives us the reason why,” said William Hanage, epidemiologist at Harvard TH Chan School of Public Health.

P.1 is now spreading across the rest of Brazil and has been found in 24 other countries. In the United States, the Centers for Disease Control and Prevention has registered six cases in five states: Alaska, Florida, Maryland, Minnesota, and Oklahoma.

To reduce the risk of P.1 outbreaks and reinfections, Dr. Faria, it is important to double up on any measure to slow the spread of the coronavirus. Masks and social distancing can work against P.1. And vaccinations can help reduce transmission and protect those who become infected from serious illnesses.

“The ultimate message is that you need to step up all vaccination efforts as soon as possible,” he said. “You have to be one step ahead of the virus.”

Dr. Faria and his colleagues began tracking down the coronavirus when it exploded in Brazil last spring. Manaus, a city of two million people in the Brazilian Amazon, was particularly hard hit. At the height of spring, the Manaus cemeteries were overwhelmed by the corpses of the dead.

But after a peak in late April, Manaus appeared to have overcome the worst of the pandemic. Some scientists believed the decline meant Manaus had gained herd immunity.

Dr. Faria and his colleagues looked for coronavirus antibodies in samples from a Manaus blood bank in June and October. They found that roughly three-quarters of Manaus residents were infected.

However, towards the end of 2020, the number of new cases increased again. “There were actually far more cases than the previous peak of cases, which was in late April,” said Dr. Faria. “And that was very puzzling to us.”

To look for variants, Dr. Faria and his colleagues launched a new genome sequencing effort in town. While B.1.1.7 had arrived in other parts of Brazil, they did not find it in Manaus. Instead, they found a variant that no one had seen before.

Updated

March 1, 2021, 9:49 p.m. ET

Many variants in their samples shared a set of 21 mutations that were not seen in other viruses circulating in Brazil. Dr. Faria texted a colleague, “I think I’m seeing something really strange and I’m pretty worried about it.”

Some mutations in particular worried him, as scientists had already found them in B.1.1.7 or B.1.351. Experiments suggested that some of the mutations might make the variants better able to infect cells. Other mutations allow them to evade antibodies from previous infections or to be produced by vaccines.

While Dr. Faria and his colleagues analyzed their results, researchers in Japan made a similar discovery. Four tourists who returned home from a trip to the Amazon on Jan. 4 tested positive for the coronavirus. Genome sequencing revealed the same mutations that Dr. Faria and his colleagues in Brazil saw.

Dr. Faria and his colleagues posted a description of P.1 on an online virology forum on January 12th. Then they investigated why P.1 is so common. Its mutations could have made it more contagious, or it could have been lucky. Coincidentally, the variant might have surfaced in Manaus when the city became more relaxed about public health policies.

It was also possible that P.1 became common because it could re-infect people. Usually, coronavirus reinfections are rare as the antibodies produced by the body after infection are effective for months. However, it was possible that P.1 had mutations that made it difficult for these antibodies to attach to it, allowing them to slip into cells and cause new infections.

The researchers tested these possibilities by tracking P.1 from its earliest samples in December. At the beginning of January it was 87 percent of the samples. By February it had completely taken over.

The researchers combined the data from genomes, antibodies and medical records in Manaus and came to the conclusion that P.1 conquered the city thanks to biology rather than luck: its mutations contributed to its spread. Like B.1.1.7, it can infect more people on average than other variants. They estimate that it is between 1.4 and 2.2 times more transmissible than other coronavirus lineages.

But it also gets a benefit from mutations that allow antibodies from other coronaviruses to escape. They estimate that out of 100 people who were infected in Manaus last year, between 25 and 61 were re-infected by P.1.

The researchers found support for this conclusion in an experiment in which they mixed P.1 virus with antibodies from Brazilians who had Covid-19 last year. They found that the effectiveness of their antibodies against P.1 decreased six-fold compared to other coronaviruses. This decline could mean that at least some people are susceptible to new infections from P.1.

“There seems to be a growing body of evidence to suggest that most of the second wave-related cases are actually some kind of reinfection,” said Dr. Faria.

Dr. Faria and other researchers are now looking across Brazil to observe the spread of P.1. Dr. Ester Sabino, an infectious disease expert at the University of São Paulo Faculty of Medicine, said one of the new outbreaks has occurred in Araraquara, a Brazilian city of 223,000 that did not have high rates of Covid-19 before P.1 arrived.

If the people of Araraquara did not have high antibody levels prior to P.1’s arrival, it suggests that the variant may have spread to locations without Manaus’ extreme history. “This could happen in any other place,” she said.

Michael Worobey, a virologist at the University of Arizona who was not involved in the research, said it was time to pay attention to P.1 in the US. He expected it to become more common in the United States, although it would have to compete with B.1.1.7, which could soon become the predominant variant in much of the nation.

“At least it will be one of the competitors,” said Dr. Worobey.

In their experiments, Dr. Faria and his colleagues also received antibodies from eight people who received CoronaVac, a Brazilian-made vaccine that was used in Brazil. They found that the antibodies produced by the vaccine were less effective at stopping the P.1 variant than other types.

Dr. Faria warned that these results, taken from cells in test tubes, don’t necessarily mean vaccines are less effective at protecting real people from P.1. Vaccines can very well provide strong protection against P.1, even if the antibodies they produce are not quite as effective. And even if the variant manages to infect vaccinated people, they will most likely remain protected from a severe attack of Covid-19.

For Dr. Sabino is the ultimate meaning of P.1 the threat that variants pose if they can appear anywhere in the world.

“It’s just a matter of time and chance,” she said.

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Business

Virus Did Not Deliver Monetary Rout That Many States Feared

In his survey, Peter DeGroot, director of community research and strategy at JP Morgan, found a handful of states, including Idaho, South Dakota and New Mexico, that made even more money last year than they did in 2019. The survey also found several states where tax revenues have not yet declined because they depend heavily on tourism, oil and gas, or coal mining – including Hawaii, Nevada, Florida, Texas, and West Virginia.

Ms. Sheiner’s analysis found that Idaho had the largest revenue recovery of any state. She did research with Byron Lutz, a Federal Reserve economist.

Idaho financial management director Alex J. Adams said in an interview that the boom took officials by surprise and that they held a reason for the influx of new California residents to escape the high cost of this state’s life – a trend that started before the pandemic but accelerated over the past year. Mr Adams also said Idaho did not pause construction when the lockdowns were in place, which helped economic activity.

Idaho Republican Governor Brad Little said in his January speech to the state that 2020 revenue was strong enough to send $ 295 million back to taxpayers and still enough to move into better highways, Investing in bridges and broadband access. He also wrote to the Idaho Congressional delegation last year calling on them to oppose the use of non-binding federal dollars to rescue badly governed states.

With some states now “enjoying gusts of wind” and others still struggling, Mr. White said a smaller amount of money, more targeted towards the states that need it most, would be the most efficient approach for Congress. But getting help to those governments who really need it, without sending unnecessary aid to those who don’t, requires “exceptional creativity,” he said.

To some extent, the surprising rallies in states reflect the timing of events over the past year. The pandemic began when many state lawmakers were reviewing initial budget proposals for the coming fiscal year. The proposals worked out weeks before the shock forecast a year of heavy tax rises.

Then, within a few weeks, millions of people lost their jobs. State officials view unemployment as a major driver of their tax affairs; Research from previous recessions suggests that a single percentage point increase in the unemployment rate could cause the state budget to suffer $ 45 billion.

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C.D.C. Publicizes $200 Million ‘Down Cost’ to Observe Virus Variants

When lawmakers asked billions of dollars to fund the country’s efforts to prosecute coronavirus variants, the Biden government on Wednesday announced new efforts to advance that work, pledging nearly $ 200 million to help the emerging ones Better identify threats.

Calling it a “down payment,” the White House said the investment would result in a significant increase in the number of positive virus samples that labs could sequence. Laboratories, universities and public health programs run by the Centers for Disease Control and Prevention sequenced more than 9,000 genomes last week, according to the GISAID database. The agency hopes to increase its own contribution to 25,000 genomes per week.

“When we reach 25,000 depends on the resources we have and how quickly we can mobilize our partners,” said Dr. Rochelle Walensky, CDC director, at a press conference at the White House on Wednesday. “I don’t think this will be a light switch. I think it will be a dial. “

The program is the administration’s most significant effort to date to address the looming threat of more contagious variants of the virus. An affected variant, first identified in the UK, has infected at least 1,277 people in 42 states, though scientists suspect the actual number is significantly higher.

Variant B.1.1.7 developed in the UK, which doubles roughly every 10 days, threatens to slow down or reverse the rapid decline in new coronavirus cases. In addition, Dr. Walensky that the nation saw their first case of B.1.1.7, which received a particularly worrying mutation that was shown in South Africa to affect vaccine effectiveness.

Other worrisome variants have also surfaced in the US, including one first found in South Africa that weakens vaccines.

The FDA is preparing a possible redesign of vaccines to provide better protection against the new variants. However, this effort will take months. In the short term, experts say, it is important to increase the sequencing effort, which is too small and uncoordinated to adequately track where and how quickly variants are spreading.

Scientists welcomed the Biden administration’s new plans. “It’s a big step in the right direction,” said Bronwyn MacInnis, geneticist at the Broad Institute.

Dr. MacInnis said the “minimum gold standard” would sequence 5 percent of the virus samples. If cases continued to drop, 25,000 genomes per week would bring the country near that threshold, she said, “where we need to be to detect not only known threats but emerging threats as well.”

Trevor Bedford, evolutionary biologist at the Fred Hutchinson Cancer Research Center, said the national sequencing effort had made “significant gains” since December. Still, he said the CDC also needs to make improvements in collecting data about the genomes – for example, to tie it to contact tracing information – and then support the large-scale analysis on computers that is needed to quickly understand everything .

“There’s too much focus on the raw count that we’re sequencing rather than the turnaround time,” he said.

White House officials occupied the sequencing attempt as part of a wider effort to test more Americans for the virus. The Department of Health and Human Services and the Department of Defense on Wednesday announced significant new investments in testing, including $ 650 million for elementary and middle schools and “underserved community facilities” like homeless shelters. The two divisions are also investing $ 815 million to expedite test supplies production.

The CDC’s $ 200 million sequencing investment is dwarfed by a program proposed by some lawmakers as part of an economic bailout package that Democratic Congress leaders want to pass before mid-March. Senator Tammy Baldwin, Democrat of Wisconsin, passed legislation to improve his sequencing efforts. House lawmakers have allocated $ 1.75 billion to the effort.

In an interview, Ms. Baldwin suggested that the government sequence 15 percent of positive virus samples, a goal that goes well beyond what researchers believe is possible in the short term.

“This is to create the basis for a permanent infrastructure that enables us not only to monitor Covid-19 in order to discover new variants, but also to have this ability for other diseases.” she said of her proposal. “There are significant gaps in knowledge.”

In an interview, Carole Johnson, the new testing coordinator for the Biden administration, said the $ 200 million investment was a “down payment” and just the beginning of what is likely to be a much more aggressive campaign to track the variants.

Updated

Apr. 20, 2021, 9:30 a.m. ET

“Here we can take a look: What resources are currently available to us? What can we find to act quickly? ” She said. “But you know that going forward we need bigger investments and a systematic way to get this job done.”

Since 2014, the CDC Office of Advanced Molecular Detection has been using genome sequencing to track diseases such as influenza, HIV, and food-borne diseases. When the coronavirus pandemic hit the United States, the CDC was slow to adapt these tools to track the coronavirus. For weeks it just struggled to create a test for the virus.

In contrast, the UK launched a highly acclaimed sequencing program last March that leveraged the nationalized health system with a central genomics laboratory. It now sequences up to 10 percent of all positive coronavirus tests and provides a thorough, quick analysis of the results.

The CDC began increased surveillance efforts later in 2020, helping academic laboratories, commercial sequencing companies, and public health departments to collaborate and share knowledge. In November, the company invested in its own program called NS3 to analyze coronavirus genomes. Every two weeks, the agency asks state health departments to send at least 10 samples to their laboratory for sequencing.

In December it became clear that these efforts would not be enough. Researchers in the UK found a new variant called B.1.1.7 that was up to 50 percent more transmissible than other variants. Scientists now suspect that it’s probably more deadly too. In South Africa, another variant called B.1.351 was found not only to be more contagious, but also to be less susceptible to multiple vaccines.

CDC officials began to fear that B.1.1.7 had already spread widely in the United States, according to a senior federal health official. They started new efforts, including contracts with laboratory testing companies to run coronavirus testing.

Dr. Gregory Armstrong, the director of the Advanced Molecular Detection Program, said in an interview that his team concluded in January that sequencing from 5,000 to 10,000 samples per week was a good short-term goal.

“It’s the starting point,” said Dr. Armstrong. “The more we sequence about it, the faster we can identify these variants.”

At a press conference at the White House earlier this month, Jeffrey D. Zients, the White House’s Covid-19 response coordinator, recognized how difficult it would be to achieve that goal.

“We are 43rd worldwide in genome sequencing – totally unacceptable,” he quoted December data from the GISAID database. In a subsequent interview, he corrected himself and said that the US stands behind 31 other nations.

In the early days of administration, Dr. Walensky set an initial goal for the CDC to sequence 7,000 genomes per month. Since then, laboratories have not come close to that number.

The agency’s National Genomic Surveillance Dashboard showed that only 96 genomes were logged for the week of February 6th. The following week the number rose to 1,382 genomes. Dr. Walensky’s new goal of 25,000 genomes per week calls for a significant increase.

Caitlin Rivers, an epidemiologist at the Johns Hopkins Bloomberg School of Public Health, said it was a welcome development to invest $ 200 million quickly in surveillance variants before hoping for longer-term improvements. “Time is of the essence,” she said. “An initial investment in expanding genome monitoring while the complementary funding package comes together is a smart move.”

However, she warned that the plan could not be implemented immediately. It can take a month for the basic improvements to be achieved. By then, B.1.1.7 could already dominate US cases and jeopardize the current decline.

The larger program in the stimulus package will be critical to managing the pandemic in the long term, said Dr. Rivers.

“We may not be able to get very far on B.1.1.7, but what’s the next, in three months or six months or next winter?” She asked. “It’s not always just what’s in front of you. It’s what’s coming around the corner. “

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Meals and its packaging are extremely unlikely to transmit virus

A health worker wearing a protective mask works in a laboratory during clinical trials for a Covid-19 vaccine at the Research Centers of America in Hollywood, Florida, USA

Eva Marie Uzcategui | Bloomberg | Getty Images

It’s been just over a year in the global Covid-19 pandemic, and there is still “no credible evidence” that people can catch the virus from food or food packaging, leading US food and health officials said Thursday .

While there have been some scientific studies that have identified Covid-19 particles on food packaging, according to a joint press release from the United States, most of that research is to find the genetic fingerprint of the virus, not the live virus that is causing it Infection in humans can result from the Department of Agriculture, the United States Food and Drug Administration, and the United States Centers for Disease Control and Prevention.

Transmission of the virus through food or food packaging is highly unlikely because the amount of virus particles that a person could theoretically ingest by touching a contaminated surface is not enough to produce an infection through oral inhalation.

Health experts around the world have come to similar conclusions and have found that international scientists are constantly learning more about the virus.

“Despite the billions of meals and food packaging treated since the beginning of the COVID-19 pandemic, there has so far been no evidence that food, food packaging, or handling of food is a source or an important route of transmission for SARS-CoV-2 in COVID-19, “said a recent statement from the International Commission on Microbiological Specifications for Food.

Over 110 million people around the world have tested positive for the coronavirus. There are several ways to transmit and infect the virus, but global health experts agree that taking it out on Friday night is unlikely to be one of them.

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7 Virus Variants Present in U.S. Carrying the Identical Mutation

While Americans are excited to see variants that were first distributed in the UK and South Africa in the US, scientists are finding a number of new variants that originated here. What is even more worrying is that many of these flavors are moving in the same direction and potentially becoming contagious threats themselves.

In a study published on Sunday, a team of researchers reported seven growing lineages of the novel coronavirus discovered in states across the country. All of them have developed a mutation in the same genetic letter.

“There is clearly something wrong with this mutation,” said Jeremy Kamil, a virologist at Louisiana State University’s Shreveport Health Sciences Center and co-author of the new study.

It’s unclear whether it makes the variants more contagious. However, since the mutation occurs in a gene that affects the entry of the virus into human cells, scientists are very suspicious.

“I think there is a clear signature for an evolutionary benefit,” said Dr. Kamil.

The history of life is full of examples of what is known as convergent evolution, in which different lines follow the same path. Birds were given wings when they evolved from feathered dinosaurs, for example, just as bats did when they evolved from furry, shrew-like mammals. In both cases, natural selection resulted in a pair of flat surfaces that could be fluttered to create lift. So bats and birds alike could soar in the sky and fill an ecological niche that other animals couldn’t.

Charles Darwin first recognized convergent evolution by studying living animals. In recent years, virologists have found that viruses can also develop convergently. For example, HIV emerged when several types of virus were passed from monkeys and monkeys to humans. Many of these lines of HIV received the same mutations that made them adapt to our species.

While the coronavirus is now branching into new variants, researchers observe Darwin’s theory of evolution in action every day.

Dr. Kamil stumbled upon some of the new variants while sequencing samples from coronavirus tests in Louisiana. At the end of January he observed an unfamiliar mutation in a series of samples.

The mutation changed the proteins that examine the surface of the coronavirus. Known as spike proteins, they are folded chains of more than 1,200 molecular building blocks called amino acids. Dr. Kamil’s viruses all shared a mutation that changed the 677th amino acid.

When Dr. Kamil examined these mutant viruses, he found that they all belonged to the same lineage. The earliest virus in the line dates back to December 1st. It became more common in later weeks.

On the evening of his discovery, Dr. Kamil uploaded the genomes of the viruses to an online database used by scientists around the world. The next morning he received an email from Daryl Domman of the University of New Mexico. He and his colleagues had just found the same variant in their condition with the same 677 mutation. Your samples are from October.

The scientists wondered if the line they discovered was the only one that had a 677 mutation. Dr. Kamil and colleagues examined the database and found six other lineages that independently received the same mutation.

It is difficult to answer even basic questions about the prevalence of these seven lineages because the United States sequences genomes from less than 1 percent of coronavirus test samples. The researchers found samples from the lineages that were scattered across much of the country. But they cannot tell where the mutations first originated.

Updated

Apr. 14, 2021, 3:56 p.m. ET

“At the moment I would be quite reluctant to give a place of origin for one of these lines,” said Emma Hodcroft, epidemiologist at the University of Bern and co-author of the new study.

It’s also hard to tell if the increase in variants is actually due to their being more contagious. They might have become more frequent simply because of all the travel during the holiday season. Or they exploded during superspreader events in bars or factories.

Still, scientists are concerned because the mutation could plausibly affect how easily the virus gets into human cells.

Infection begins when a coronavirus uses the tip of the spike protein to attach itself to the surface of a human cell. It then releases harpoon-like arms from the base of the spike, pulls toward the cell, and supplies its genes.

Before the virus can make this invasion, however, the spike protein must encounter a human protein on the surface of the cell. After this contact, the spike is free to rotate, exposing its harpoon tips.

The 677 mutation changes the spike protein next to where our proteins cut into the virus, which may make it easier to activate the spike.

Jason McLellan, a structural biologist at the University of Texas at Austin who was not involved in the study, called it “an important advance.” But he warned that the way the coronavirus unleashed its harpoons was still pretty mysterious.

“It’s hard to know what these substitutions do,” he said. “There really needs to be some additional experimental data added.”

Dr. Kamil and his colleagues begin these experiments in the hope that the mutation actually makes a difference to infections. If the experiments confirm their suspicions, the 677 mutation will join a small, dangerous club.

Convergent evolution has transformed several other locations on the spike protein as well. For example, the 501st amino acid is mutated in a number of lineages, including the contagious variants first seen in the UK and South Africa. Experiments have shown that the 501 mutation changes the tip of the tip. This change allows the virus to attach itself more tightly to cells and infect them more effectively.

Scientists believe that coronaviruses will converge on more mutations that will give them an advantage – not just against other viruses, but also against our own immune system. However, Vaughn Cooper, an evolutionary biologist at the University of Pittsburgh and co-author of the new study, said laboratory experiments alone could not reveal the extent of the threat.

To really understand what the mutations are doing, scientists need to analyze a much larger sample of coronaviruses from across the country. Currently, however, they can only look at a relatively small number of genomes collected from a patchwork of government and university laboratories.

“It is ridiculous that our country is not developing a national strategy for surveillance,” said Dr. Cooper.

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W.H.O. Researcher on His Journey to China In search of Virus Origins

What about the cases that occurred before the fish market erupted?

There were other spreads outside of the Huanan market. There are other patients unrelated to the market, some in December. There were other markets. And we know that some of the patients have had connections with other markets. We have to keep working and then our Chinese colleagues have to keep working.

When we sat down as a group, on the last full day of work, the China team and WHO team said, “Let’s go over the hypotheses.” The route that received the most enthusiastic support was this route – wildlife through a domesticated wildlife association to Wuhan .

What is the next step?

It’s straightforward for the animal chain. The suppliers are known. You know the farm name; You know the owner of the farm. You have to go to the farm and interview the farmer and family. You have to test them. You have to test the community. You need to see if there are any animals left on nearby farms, if there are any signs of infection, and if there is any cross-border movement. If the virus is in these southern border states, it is possible that there has been movement in neighboring countries like Vietnam, Laos or Myanmar. We are now finding more and more related viruses. There is one in Japan and one in Cambodia, one in Thailand.

For the human side, look for previous cases, for clusters. If possible, check the blood banks for serum. Something like this is going to be sensitive in China and it will take some persuasion, diplomacy and energy to do because, to be honest, finding the source of this virus in China is not a high priority for the Chinese government think you. Anywhere this virus appears it is a political problem. That is one of the problems and that is clear and obvious to anyone who has looked at it.

Do you have a particular animal that you currently suspect as an intermediate link stronger than others?

It’s too high in the air. We don’t know if civets were for sale. We know they get infected very easily. We don’t know what the situation is with the mink farms in China or the other fur farms like raccoon dogs, although they are usually bred in a different part of China. That too needs to be followed up.

But if you were to say which route you put the most weight on, the virus would emerge from bats in either Southeast Asia or South China and end up on a domesticated game farm. I’ve been to many of them and they often have mixed species – civets, ferret badgers, raccoon dogs. These animals could be infected by bats.

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U.Ok. Virus Variant Is Most likely Deadlier, Scientists Say

LONDON – UK government scientists are increasingly realizing that the variant of coronavirus, first discovered in the UK, is more deadly than the original virus. This is a devastating trend that highlights the serious risks of this new phase of the pandemic.

The scientists said last month that there was a “realistic possibility” that the variant would be more deadly. Now a new document states that it is “likely” that the variant is associated with an increased risk of hospitalizations and death.

The UK government has not made the updated results public. These are based on about twice as many studies as their earlier assessment and include more deaths due to Covid-19 cases caused by the new variant B.1.1.7. The document was posted on a government website on Friday and was reviewed at a government advisors meeting the previous day.

The variant is known in 82 countries, including the USA. American scientists recently estimated that it was spreading rapidly there, doubling about every 10 days, and said it could be the dominant version of the virus in the United States by March.

“The calculation of when we can lift restrictions has to be affected,” said Simon Clarke, Associate Professor of Cell Microbiology at the University of Reading, of the new findings. “It provides additional evidence that this variant is more deadly than the one we looked at last time.”

Most Covid-19 cases, including those caused by the new variant, are not fatal. And government scientists relied on studies that looked at a small fraction of the total deaths, making it difficult to determine exactly how much increased risk might be associated with the new variant.

Updated

Apr. 13, 2021 at 10:00 PM ET

However, the strongest studies they relied on estimated that the variant could be 30 to 70 percent more deadly than the original virus.

And the government scientists, who are part of a committee known as the Advisory Group on New and Emerging Respiratory Virus Threats, wrote that the latest studies have helped them control factors like the impact of congested hospitals.

This enabled “increasing confidence in the association” of the new variant “with increased disease severity”.

The variant is thought to be 30 to 50 percent more transmissible than the original virus, although some scientists now believe it is even more contagious. The first sample of it was collected in the south east of England in September and quickly became the dominant version of the virus in the UK. It now accounts for more than 90 percent of cases in many parts of the country.

As it spread, hospitals have been overwhelmed by the pace of new infections. Doctors and nurses treated almost twice as many hospital patients as they did at the height of last year. A strict lockdown has since slashed the number of new coronavirus cases in the UK.

As an example of the growing evidence of the variant’s lethality, government scientists cited a study by the London School of Hygiene and Tropical Medicine. In January, this study looked at the deaths of 2,583 people, 384 of whom are believed to have had cases of Covid-19 caused by the new variant. The study estimated that people infected with the new variant had a 35 percent higher risk of death.

An updated study by the same group relied on 3,382 deaths, of which 1,722 were believed to be from the new variant. This study suggested that the variant could be associated with a 71 percent higher risk of death.

Professor Clarke said the new findings confirmed the UK government’s decision to raise an alert about the variant in December and then release evidence last month that it was potentially more deadly. Some outside scientists initially rejected the warnings.

“You didn’t withhold the data,” said Professor Clarke. “They were very open about how insecure things were.”