A healthcare worker administers a Covid-19 test at testing site in San Francisco, California, U.S., on Monday, Jan. 10, 2022. David Paul Morris | Bloomberg | Getty Images The National Institutes of He...
A healthcare worker administers a Covid-19 test at testing site in San Francisco, California, U.S., on Monday, Jan. 10, 2022. David Paul Morris | Bloomberg | Getty Images The National Institutes of He...