Bill de Blasio, Mayor of New York.

Jeenah moon | Reuters

New York City will require all employees in city health facilities and hospitals to be vaccinated or have weekly Covid tests, with positivity rates continuing to rise as the Delta variant spreads, City Hall officials told NBC New York.

Mayor Bill de Blasio will release details on the request Wednesday morning, including those that go with it, sources said. The plan targets the unvaccinated third of all healthcare and hospital workers in the city.

“It’s about the safety of a health system,” said Bill Neidhardt, the mayor’s press officer.

This is a developing story. Please check again for updates.