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South Africa Covid variant detected in first New York affected person

New York Governor Andrew Cuomo speaks out on Coronavirus Disease (COVID-19) on November 15, 2020 at Riverside Church in Manhattan, New York City, United States.

Andy Kelly | Reuters

Governor Andrew Cuomo said Sunday that a variant of Covid-19, first identified in South Africa, has reached New York.

The governor said at a news conference that the mutation, which experts fear may be resistant to some vaccines, was discovered in a resident of Nassau County. The announcement comes days after a Connecticut resident tested positive for the variant in a New York hospital.

“It is more important than ever for New Yorkers to stay vigilant, wear masks, wash hands, and stay socially aloof. We are currently in a race between our immunity and those variants that are actively trying to reproduce and we’ll just do it. ” You can win this race if we stay smart and disciplined, “said Cuomo.

The South African variant, known as B.1.351, was first discovered in the US in late January and has been found in at least 10 states, according to the Centers for Disease Control and Prevention. 21 infections have been reported in the country.

The mutation is one of three strains of very high concern monitored by the agency, along with variants that were first identified in the UK and Japan.

The CDC has said preliminary evidence from untested publications suggests the Moderna vaccine may be “less effective” against the South African variant. It was indicated that further studies are needed.

The Moderna vaccine is one of two federally approved vaccines in the United States. Three other vaccines are currently in clinical trials.

Cuomo’s announcement came as the number of new cases and hospitalizations continued to decline in New York and across the country. Some public health experts have warned that the new mutations that are believed to be more transmissible could reverse these trends.

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Biden Covid group briefs press as winter storm delays vaccine deliveries

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President Joe Biden’s Covid-19 Response Team plans to hold a press conference on Friday while a massive winter storm has closed vaccine dispensaries and delayed shipments to the United States

The Chief Medical Officer of the White House, Dr. Anthony Fauci, warned Thursday that the power outages and winter storm in Texas are a “significant” problem for Covid-19 vaccine distribution this week. The Biden government has announced a number of moves in recent weeks to increase vaccine intake, such as shipping cans directly to retail pharmacies and community health centers.

“We just have to make up for it as soon as the weather subsides a bit, the ice melts and we can get the trucks and the people out,” said Fauci during an interview with MSNBC’s Andrea Mitchell.

FedEx and UPS package centers in the Midwest were also hit by the storm, delaying vaccine shipments across the country.

The delay comes because the country’s leading health authorities, including Fauci and the director of the Centers for Disease Control and Prevention, Dr. Rochelle Walensky, calling on Americans to contain the spread of the virus so that the US can give vaccines before highly contagious variants make the pandemic worse.

Read CNBC’s live updates for the latest news on the Covid-19 outbreak.

– CNBC’s Berkeley Lovelace Jr. contributed to this report.

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Historic winter storm delays Covid vaccine shipments throughout the U.S.

Snow plow carts clear a street in New York, United States on Thursday, December 17, 2020.

Angus Mordant | Bloomberg | Getty Images

Deliveries of Covid-19 vaccine doses were delayed in several states this week due to historic winter storms across the country, state and federal officials said.

Almost all of the cans that were supposed to arrive in New York state this past weekend have been delayed, Governor Andrew Cuomo said late Thursday.

“Any dose that should have been shipped on Monday was withheld and limited numbers of Pfizer vaccines left shipping facilities on Tuesday and Wednesday,” Cuomo said, adding that the state is working with vendors to “increase the number reduce the deadlines that are required. ” be moved. “

It’s not just New York. Samantha Bequer, a spokeswoman for the Florida Division of Emergency Management, said more than 200,000 cans expected this week had not arrived.

“The state is still expecting full vaccine allocation by week 10,” Bequer said in a statement. “Yesterday, the state was notified that federal deliveries of Moderna vaccines are still being delayed due to severe weather. At this point in time, the state has not been given a new timetable for when expected delayed deliveries will occur.”

Bequer said the state is working with vendors advising them to postpone, but not cancel, vaccine appointments hit by the setbacks.

In Colorado, state officials said earlier this week that a shipment of more than 130,000 cans was delayed due to the storm. They said the storm hit a vaccine distribution center in Tennessee, which has pushed back shipments to several states.

The North Carolina Department of Health said Thursday it had been informed by the federal government of ongoing delays in some deliveries and deliveries this week due to severe weather.

The Virginia Department of Health said Thursday that the expected delivery of more than 106,000 shots will likely be delayed “due to distribution channels in the Midwest and elsewhere that are currently closed”.

Andy Slavitt, the White House’s senior advisor on Covid Response, confirmed Friday that there is now about 6 million doses backlog affecting all 50 states. “Many states” were able to make up for the missed deliveries with existing inventory, he said at a Covid-19 briefing in the White House.

Health officials in California, Louisiana, and Georgia have also confirmed delays in their shipments.

The Georgian Ministry of Health announced earlier this week that Pfizer and Moderna were holding shipments due to the weather, which “severely affected shipments of COVID-19 vaccines to Georgia”.

White House officials have recognized the setbacks. The chief physician Dr. Anthony Fauci warned Thursday that the storm is creating a significant problem for vaccine distribution.

“Well, obviously it’s a problem. It slowed down and stalled in some places,” Fauci told MSNBC. “We just have to make up for it as soon as the weather subsides a bit, the ice melts and we can get the trucks and the people out.”

Slavitt told CNN Thursday evening that officials “will have to work double next week, provided the weather improves”. However, he added that “there has not been a single vaccine that is spoiled”.

“We will keep these vaccines safe and sound, then give them to people and catch up as soon as the weather allows,” he said.

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Clorox increasing manufacturing of disinfectant wipes amid Covid: CEO Linda Rendle

Linda Rendle, CEO of Clorox, told CNBC on Friday that the company had further increased the production of its disinfectant wipes to meet the increased demand from the global Covid crisis as early as the second year.

“We made about 1 million canisters of wipes in the last quarter and brought them to stores every day,” said Rendle at Closing Bell. “This quarter we have up to 1.5 million canisters per day and will continue to expand these when we bring new capacities online in the next few months.”

Consumers stocked up on various cleaning products during the pandemic, which, despite efforts to ramp up production, led to supply bottlenecks for items such as Clorox wipes. In December, Clorox chief operating officer Eric Reynolds told NBC News that the limited availability may last until “mid-2021”.

Clorox has raised its full-year revenue forecast following its quarterly report earlier this month. The company now expects revenue to grow between 10% and 13% in fiscal 2021, up from previous projections of 5% to 9% growth.

The number of coronavirus cases has been falling recently and Covid vaccines are becoming more and more accessible, leading to optimism that the acute phase of the pandemic will soon be over. For Clorox, Rendle said the rosier sales picture was partly due to a shift in people’s view of sanitation as a result of the health crisis.

“This is true here in the US, but really all over the world. People focus on cleaning and more on safety and well-being, not just on work,” said Rendle, who took over the management of the household products manufacturer in September. She had served as President of Clorox.

Before the coronavirus pandemic, a trend in the detergent industry was a quest for more sustainability and transparency. To this end, Clorox launched compostable cleaning wipes in January 2020. However, according to Rendle, production had to be halted due to Covid, as products that could be manufactured faster were given a higher priority.

“We will be bringing these compostable wipes back and we expect them to be a large part of our portfolio as we move forward,” she said.

Clorox shares fell 1.37% to $ 187.05 apiece on Friday. Based in Oakland, Calif., Its shares rose 13.5% over the past 12 months.

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We want extra Covid vaccine doses and it must be simpler to get them, state and native well being officers say

People wearing protective masks wait in line to receive a dose of the Pfizer-BioNTech Covid-19 vaccine at a major vaccination site in Sacramento, California on Thursday, February 4, 2021.

David Paul Morris | Bloomberg | Getty Images

Scientists and health officials told Congress on Friday that the federal government must increase its supply of Covid-19 vaccine doses to streamline the process for ingestion.

These two changes are crucial if federal officials want to increase the number of people who receive the shots, scientists and public health officials who have testified before the Science, Space and Technology House Committee.

“Even people who are motivated and excited about the vaccine can be put off by the slightest friction in the system, whether it is complex logistics, inconvenience or confusing instructions,” said Dr. Alison Buttenheim, Scientific Director of the Center for Health Incentives and Behavioral Economics.

The hearing will take place when elected officials and health professionals address hesitation and disinformation related to the Covid-19 vaccine.

“Fix the simple stuff,” said Buttenheim. “In all honesty, it’s often easier to fix these problems than to change someone’s mind.”

Dr. Philip Huang, director and health department for the Dallas County Department of Health, said the county is trying to address “logistical and problematic factors” by providing online registration and phone banking for vaccine appointments, and by working with community leaders to register people for vaccinations of drive-through vaccination stations.

Keith Reed, assistant commissioner for the Oklahoma State Department of Health, said the state opened an extended timeframe to give residents more time to sign up for vaccine appointments.

“In order to vaccinate as many Oklahomans as possible, we opened the authorization to new priority groups before we fully vaccinated previous groups,” Reed said. “With this tactic we hope to extend the window of opportunity.”

Initiatives to reduce logistical barriers to those who wish to get vaccinations are particularly effective as vaccine supply in the US remains below community demand, according to panellists.

“Supply is the problem at this point,” said Huang. “We have over 650,000 people signed up on our waiting list to be vaccinated and the health department is receiving 9,000 doses a week.”

Health officials stressed that all Covid vaccines available in the US are effective at protecting people from serious illness, hospitalization and death. They urged people not to wait for the vaccination to get a particular brand of vaccine based on perceived effectiveness.

“The best vaccine is the one you can get tomorrow,” said Buttenheim.

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Biden says U.S. will search to ‘finish most cancers as we all know it’ after Covid pandemic

President Joe Biden said Friday that after fighting the coronavirus pandemic, his government will fight another deadly disease: cancer.

“I want you to know that once we defeat Covid, we will do everything we can to end cancer as we know it,” Biden said in a speech after opening the massive Pfon coronavirus vaccine manufacturing facility in Kalamazoo, Michigan.

According to the National Center for Health Statistics, cancer is the second leading cause of death in the United States. Almost 600,000 people will die of cancer in 2019. Nearly 1.9 million new cancer cases will be diagnosed in the US in 2021, American Cancer Society researchers estimate.

One of Biden’s sons, Beau Biden, died of an aggressive form of brain tumor at the age of 46.

Biden said two White House offices, the Science and Technology Advisory Council and the Science and Technology Policy Bureau, will be involved in developing an “advanced research effort into cancer and other diseases.”

Dr. Eric Lander, the director of the Broad Institute of MIT and Harvard University, will jointly lead both offices, Biden said.

The president compared the initiative to DARPA, the Pentagon agency charged with testing new technologies.

As a presidential candidate, Biden suggested creating such an agency as part of his platform’s Made in America plank. Its campaign website called it the Advanced Research Projects Agency for Health, or ARPA-H.

Then-candidate Biden reportedly raised the proposal frequently at fundraisers for private campaigns, though he rarely spoke about it at public events.

Biden’s forward-looking announcement seemed to send the message that his government has gotten a better grip on the pandemic.

That message was underscored by the location he intended to deliver it to: a 1,300 acre vaccine manufacturing facility where millions of doses of Pfizer’s Covid vaccine are manufactured, packaged, frozen and shipped.

“We’re now at a point where the average daily number of people vaccinated has nearly doubled since the week before I took office, to an average of 1.7 million per day,” said Biden, adding: ” We’re on track to exceed my commitment to “administer 100 million shots in his first 100 days as president”.

But “despite the progress, we are still in the teeth of a pandemic,” warned Biden.

He noted that new strains of the virus are emerging and that the U.S. is poised to soon pass the grim milestone of 500,000 deaths from Covid.

“If there is one message that needs to be given to everyone in this country, it is this: The vaccines are safe. Please take the vaccine for yourself, your family, your community, this country, when it is your turn and are available, “said Biden.

Biden urged Americans to continue taking precautions for their health and safety, including hand washing, social distancing and wearing masks.

“Look, I know it’s inconvenient, but you make a commitment when you do,” said Biden. “Everyone has to do their part for themselves, their loved ones and, yes, their country. It’s a patriotic duty.”

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Winter storm delays shipments of 6 million Covid vaccine doses in U.S.: Officers

On February 18, 2021, vehicles will be idle on Interstate Highway 35 heading south in Killeen, Texas.

Joe Raedle | Getty Images

Massive winter storms in the Midwest and Texas have delayed the delivery of 6 million doses of Covid-19 vaccine, affecting every US state, the nation’s leading health officials said on Friday.

The backlog equates to three days of late deliveries, Andy Slavitt, White House senior advisor on Covid’s response, said during a news conference.

“Many states have been able to cover some of this delay with existing inventory,” said Slavitt.

The late deliveries are due to three major weather-related throttling points in the vaccines distribution chain, he said. Delivery centers at UPS, FedEx and McKesson that have been hired to deliver the cans to the states have reported staff shortages.

Slavitt said her workers were “snowed in and unable to come to work to package the vaccines, administration kits and other supplies.”

Road closures have also held up delivery of the vaccines between manufacturing facilities and shipping centers. In addition, more than 2,000 vaccine distribution points cannot receive doses because they are in places that are hampered by power outages, he said.

Continue reading: Covid live updates: Scientists are pushing for an optimized vaccination process

Because of the strict cold chain requirements for storing the cans in extremely cold temperatures, it is better to withhold the shipments than to send them to places where the shots may expire if they cannot be administered within three days. He said the vaccines are “safe and sound sitting in our factories and hubs and ready to ship.”

“As weather conditions improve, we are already trying to clear that backlog,” Slavitt said, adding that 1.4 million cans will be shipped on Friday. He said the government expected “all residue cans will be delivered within the next week.”

“We assume that we can handle this backlog and the new production that goes online next week,” said Slavitt.

Ahead of Friday’s briefing, US officials raised the alarm that their vaccine shipments were delayed this week. The massive winter storm closed distribution centers, leaving millions of people in states like Texas, Louisiana and Mississippi without power.

The Chief Medical Officer of the White House, Dr. Anthony Fauci, warned Thursday that the power outages and winter storm in Texas are a “significant” problem for Covid-19 vaccine distribution this week. The Biden government is asking vaccination centers to extend their working hours and offer additional appointments in the coming days and weeks to catch up, Slavitt said on Friday.

“If we all work together, from the factory to the vaccines, we’ll make up for that in the coming week,” he said.

Slavitt announced Friday that the government is working with Florida and Pennsylvania to open five more vaccination centers.

Four of the five vaccination centers will be located in the cities of Jacksonville, Miami, Orlando and Tampa, Florida. The four locations can vaccinate a total of up to 12,000 people per day. The fifth center will be in Philadelphia and vaccinate 6,000 people a day.

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New York well being chief defends state’s choice to make nursing houses take Covid sufferers

New York Health Commissioner Dr. Howard Zucker on Friday defended the state’s decision in March to force nursing homes to admit hospital residents with the coronavirus, blaming staff for spreading the virus.

The guideline, enacted on March 25, banned nursing homes from refusing admission or readmission to residents infected with Covid-19. The policy also banned nursing homes from testing patients prior to entry, NBC News reported. The policy was reversed later in May.

Zucker said Friday that at the time, the coronavirus hospitalization rate in New York was increasing “at an astounding rate” and capacity in the state’s intensive care units was running low. By allowing residents to return to the nursing homes, it helped protect the health system from collapse, he said.

“You can only verify a decision based on the facts you had at the time,” Zucker said during a press conference next to New York Governor Andrew Cuomo. “And with the facts we had at the time, it was the right decision from a public health perspective.”

Zucker said the decision was based on recommendations from the Centers for Disease Control and Prevention, issued at the time, that nursing homes should accept all residents who would normally accept them, including those diagnosed with Covid-19, for as long Precautions have been taken.

A CDC spokesman was not immediately available to comment on Zucker’s remarks.

“What if we hadn’t done it on March 25? Hospital beds, which ultimately saved lives, would not have been available because they would have been occupied by someone who could have been discharged,” Zucker said. “We made the right public health decision then and, given the same facts, we would make the same decisions again.”

The Covid-19 patients who returned to the nursing homes were likely not contagious according to the CDC’s guidelines at the time and were separated from other residents. Zucker added that state law requires nursing homes to refuse residents if they are unable to properly care for them.

“We simply said that you cannot refuse admission because of the Covid status,” he said. “We never said you had to accept, we said you couldn’t deny.”

The state’s top health official comes as the Cuomo government faces bipartisan criticism of the treatment of Covid-19 deaths in the nursing home. An investigation by New York Attorney General Letitia James published in late January found that the New York Department of Health signed up to 50% of deaths from Covid-19 in nursing homes.

On Friday, Cuomo and Zucker said most of the spread of the virus was not due to the Covid-positive resident, but from the staff who look after them.

“Covid came from the staff in the nursing homes. They got it at home, they got it at the supermarket, they went to work and they brought Covid with them,” Cuomo said.

However, Cuomo has aggressively defended the state’s census, stating that these deaths were counted as part of hospital deaths rather than nursing homes. The Democratic governor has apologized for “creating a void” by not providing enough information quickly enough and by not fighting against misinformation.

“Twitter, false reports, will eventually become a reality,” said Cuomo. “Social media, 24-hour news network, if you don’t correct it, it’ll repeat … and then people will think it’s true.”

In August, prosecutors under the Trump administration requested information about the deaths in New York nursing homes that Cuomo has criticized as politically motivated. The state legislature also asked for similar information, but the Cuomo government postponed that request to focus on that of the Justice Department, the governor said.

One of Cuomo’s top advisors, Melissa DeRosa, reportedly told Democratic lawmakers that the governor’s administration was “frozen” at their request because they feared the data would be used against them by the Justice Department, Associated Press reported.

DeRosa has since tried to clarify her comments, stating in a statement last week that she was trying to tell lawmakers that they need to focus on the Justice Department’s request first.

“We were comprehensive and transparent in our responses to the DOJ and had to immediately focus our resources on the introduction of the second wave and the vaccine,” DeRosa said in the statement. “As I said when I called the legislature, we weren’t able to respond to your request as quickly as anyone would have liked.”

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Cuomo faces political disaster attributable to Covid dying probe, bullying accusations

Governor Andrew Cuomo holds a daily press conference at the base of the Mario Cuomo Bridge in Tarrytown, New York on June 15, 2020.

Lev Radin | Pacific Press | LightRocket via Getty Images

What a difference a few months have made for New York Governor Andrew Cuomo – and not in a good way.

Cuomo was hailed last year by many who viewed him as a competent, scientifically respectful, no-nonsense, fatherly counterpoint to Donald Trump’s direct, expertly despicable, and often confusing approach to dealing with the coronavirus pandemic.

Cuomo’s daily press conferences, detailing the gritty Covid-19 stats in New York and urging citizens to take precautions against infection, became a must-see TV for weeks, as did his towel joke in interviews with the CNN presenter Chris Cuomo – his own brother.

As a result, it was discussed again that Cuomo, whose father Mario worried about running for president, earned him the sobriety of “Hamlet on the Hudson,” being a candidate for the Democratic White House nomination in 2024 would, or some position in the federal government before that.

Cuomo even landed a contract to write a book, American Crisis: Leadership Lessons from the Covid-19 Pandemic, which was published in October – even as the crisis continued to threaten his own state and elsewhere.

But it is Cuomo’s management approach to the health crisis that has created a political crisis in his administration that threatens his electoral future.

Thousands of vulnerable New Yorkers died in nursing homes during the pandemic. Your loved ones and the public deserve responses and transparency from their elected leadership.

Alexandria Ocasio-Cortez MP

DN.Y.

The U.S. Department of Justice is currently conducting a criminal investigation into nursing home deaths in New York related to the coronavirus. This was announced this week. The disclosure of this probe came weeks after New York attorney general Letitia James said deaths related to these hires were underreported by the Cuomo administration by up to 50%.

And Cuomo is also facing an effort in the state legislature to deprive him of his emergency powers, a push fueled by resentment at the governor’s verbal armament against lawmakers who stand in his way.

There is even talk of indicting Cuomo.

Alexandria Ocasio-Cortez, the progressive Democrat whose district includes parts of Queens and the Bronx in New York, issued a statement Friday approving requests from other elected officials for a “full investigation into government’s dealings with.” Nursing Homes During the Pandemic “joined. “

Ocasio-Cortez also said she supports “our state’s return to equal governance,” an indication of Cuomo’s years of dominance in the legislature.

“Thousands of New Yorkers at risk were killed in nursing homes during the pandemic,” she said. “Your loved ones and the public deserve answers and transparency from their elected leadership.”

An excuse, a probe

The contrast between Cuomo’s current situation and last fall was vividly illustrated last week when he left the White House without speaking to reporters after speaking to President Joe Biden and other governors and others at the White House about fighting pandemics and vaccinations had spoken to Mayor.

If that meeting had happened last summer, it would be unlikely that Cuomo would have missed the opportunity to share his thoughts on the seat with journalists.

That meeting, however, followed a report in the New York Post that Cuomo’s top adviser Melissa DeRosa recently apologized to Democratic lawmakers for holding back the Covid death count in government nursing homes last year while Trump was still president fear that the statistics will be “used against us” by federal prosecutors.

That excuse apparently raised the prosecutors’ antennas itself.

On Thursday evening, the Wall Street Journal reported that prosecutors from the U.S. Attorney’s Office for the Eastern District of New York had requested data on deaths in nursing homes related to Covid.

The request is “part of a broader investigation into how the state is dealing with the pandemic in these care facilities,” according to sources speaking to The Journal.

A source for the article said the data request came after DeRosa’s apology was reported.

Families of Covid victims and Republican lawmakers in New York last year criticized Cuomo for an order from the state Department of Health requiring nursing homes to withdraw their residents even if they were discharged from a hospital with Covid.

These critics accuse these policies of accelerating the spread of the virus in nursing homes.

Cuomo, whose press office did not immediately respond to a request from CNBC for comment, said this week, “My health experts do not believe it was wrong and we have gone through all the facts multiple times.”

The governor also said he had followed instructions from two leading federal agencies, the Centers for Disease Control and Prevention and the Centers for Medicare and Medicaid Services.

“If we believed it was wrong we would say we believe it is wrong and we made a mistake by following the CDC and CMS guidelines and then I would be the federal government because of Sue for misconduct related to their CDC and CMS policies, “Cuomo said.

“Classic Andrew Cuomo”

On Tuesday, nine Democratic members of the State Assembly sent their colleagues a letter accusing Cuomo of deliberately obstructing the judiciary in violation of federal criminal law. That letter called on the gathering to withdraw the government’s emergency powers granted it last year as the pandemic spread.

“This is a necessary first step in correcting the criminal injustice of this governor and his government,” said the letter, which was signed by Honorable Ron Kim from Queens.

Kim said this week, after being quoted in a New York Post article for criticizing the withholding of data from nursing homes, he received an angry phone call from Cuomo on Feb.11.

“You didn’t see my anger,” Cuomo Kim warned, according to lawmakers. “They will be destroyed,” said the governor, according to Kim.

Kim also told the Post that the governor said, “I can tell the whole world what a bad person you are and you will be done.”

In an interview with NBC New York, Kim said, “He spent 10 minutes calling me names, yelling at me, threatening me and my career, my livelihood.”

Kim’s wife, who allegedly overheard Cuomo for cursing MPs so loudly, was so shocked by the governor’s threats that she “didn’t sleep that night,” said Kim.

Cuomo’s spokesman Rich Azzopardi told The Post that Kim “lied about his conversation with Governor Cuomo”.

“I know because I was one of three other people in the room when the call came,” Azzopardi said, according to The Post.

“At no point did anyone threaten to ‘destroy’ someone with their ‘anger’ or to engage in a ‘cover-up’.” “

Kim had not backed off with his claims.

Kim appeared on ABC’s “The View” on Friday and said, “Cuomo is an abuser.”

New York Mayor Bill de Blasio, who often has a whipping boy for Cuomo, told MNBC’s “Morning Joe” show that the call to Kim was “classic Andrew Cuomo”.

“A lot of people in New York State got these calls, you know, bullying is nothing new,” said de Blasio.

“I believe Ron Kim, and it’s very, very sad – no officer, no person telling the truth should be treated like that.”

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Folks Who Have Had Covid Ought to Get Single Vaccine Dose, Research Recommend

Almost 30 million people in the United States – and likely many others whose diseases have never been diagnosed – have been infected with the coronavirus to date. Should these people still be vaccinated?

Two new studies answer this question with an emphatic yes.

In fact, research suggests that for these people, just one dose of the vaccine is enough to charge their antibodies and destroy the coronavirus – and even some other infectious variants.

The results of these new studies are consistent with the results of two others published in the past few weeks. Taken together, the research suggests that people who have had Covid-19 should be immunized – but a single dose of the vaccine may be enough.

“I think it’s a really strong rationale for why people who were previously infected with Covid should get the vaccine,” said Jennifer Gommerman, an immunologist at the University of Toronto who was not involved in the new research.

A person’s immune response to a natural infection varies widely. Most people make plenty of antibodies that last for many months. However, some people who have had mild or no symptoms of Covid-19 produce few antibodies that quickly drop to undetectable levels.

The vaccines “even hit the pitch,” said Dr. Gommerman, so that anyone who has recovered from Covid-19 will make enough antibodies to protect against the virus.

The latest study, which has not yet been published in a scientific journal, analyzed blood samples from people with Covid-19. The results suggest that her immune system would have problems fighting off B.1.351, the coronavirus variant first identified in South Africa.

But a shot of the Pfizer BioNTech or Moderna vaccine changed the picture dramatically: It increased the amount of antibodies in her blood by a thousand times – “a massive, massive surge,” said Andrew T. McGuire, immunologist at Fred Hutchinson Cancer Research Center in Seattle, who led the study.

Rinsed with antibodies, samples from all participants were able to neutralize not only B.1.351, but also the coronavirus that caused the SARS epidemic in 2003.

In fact, the antibodies appeared to work better than those in people who did not have Covid and had received two doses of a vaccine. Several studies have shown that the Pfizer-BioNTech and Moderna vaccines are about five times less effective against the variant.

The researchers received blood samples from 10 volunteers in the Seattle Covid Cohort Study who were vaccinated months after contracting the coronavirus. Seven of the participants received the Pfizer BioNTech vaccine and three received the Moderna vaccine.

Blood taken about two to three weeks after vaccination showed a significant increase in antibody levels compared to the samples taken before vaccination. The researchers don’t yet know how long the increased levels of antibodies will last, but “hopefully they will last,” said Dr. McGuire.

Updated

Apr. 19, 2021 at 12:01 am ET

The researchers also saw a surge in immune cells remembering and fighting the virus, said Dr. McGuire. “It looks pretty clear that we are boosting their pre-existing immunity,” he said.

In another new study, New York University researchers found that a second dose of the vaccine was of no great benefit at all for people with Covid-19 – a phenomenon that has also been seen with vaccines against other viruses.

In this study, most people had been infected with the coronavirus eight or nine months previously, but their antibodies increased hundreds to a thousand times with the first dose of a vaccine. However, after the second dose, the antibody levels did not rise any further.

“It is real evidence of the strength of immunological memory that they are given a single dose and have a huge increase,” said Dr. Mark J. Mulligan, director of the NYU Langone Vaccine Center and lead author of the study.

In some parts of the world, including the United States, a significant minority of the population is already infected, noted Dr. Mulligan firmly. “You should definitely be vaccinated,” he said.

It is unclear whether the thousand-fold increase in antibody levels recorded in the laboratory will occur in real-world environments. However, research shows that a single shot is enough to significantly raise antibody levels, said Florian Krammer, an immunologist at the Icahn School of Medicine on Mount Sinai in New York.

Dr. Krammer led another of the new studies that showed that people who had Covid-19 and received a dose of vaccine had more serious side effects from the vaccination and had more antibodies than those who had not been infected before.

“When you put all four papers together, you get pretty good information about people who have had an infection and only need one vaccination,” said Dr. Krammer.

He and other researchers are trying to convince scientists from the Centers for Disease Control and Prevention to recommend only one dose for those who have recovered from Covid-19.

Ideally, these people should be monitored after the first shot in case their antibody levels drop after a few weeks or months, said Dennis R. Burton, an immunologist at the Scripps Research Institute in La Jolla, California.

The fact that the charged antibodies seen in the new study can fight the 2003 SARS virus suggests that a single dose of the vaccine may have induced the volunteer’s bodies to produce “largely neutralizing antibodies” – immune molecules that are able to target a wide range of related antibodies to viruses, said Dr. Burton.

He and other scientists have spent decades investigating whether largely neutralizing antibodies can fight multiple versions of HIV at the same time. HIV mutates faster than any other virus and evades most antibodies quickly.

The new coronavirus is mutating much more slowly, but there are now several variants of the virus that appear to have become more contagious or which are thwarting the immune system. The new study could provide clues on how to make a single vaccine that stimulates the production of largely neutralizing antibodies that can destroy all variants of the coronavirus, said Dr. Burton.

Without such a vaccine, scientists would have to adjust the vaccines every time the virus changes significantly. “You’re kind of a whac-a-mole approach,” he said. It will likely take many months, if not more, to develop and test this type of vaccine against the coronavirus, but “this is the longer term way to approach this virus.”