A healthcare worker takes a swab sample from a man to be tested for the coronavirus disease (COVID-19) as people line in the background to be tested, in Buenos Aires, Argentina January 6, 2022. REUTERS/Agustin Marcarian
People queue to be tested for the coronavirus disease (COVID-19) in the parking lot of a shopping mall, in Mexico City, Mexico January 6, 2022. REUTERS/Luis Cortes
A member of the Ohio National Guard assists with administering coronavirus disease (COVID-19) tests in Columbus, Ohio, January 5, 2022. REUTERS/Gaelen Morse
People wait in line to be tested for the coronavirus disease (COVID-19), in Buenos Aires, Argentina January 6, 2022.
Mohammad Saleem, 52, reacts as he receives a coronavirus disease (COVID-19) booster vaccine in Karachi, Pakistan, January 6, 2022. REUTERS/Akhtar Soomro
People queue to be tested for the coronavirus disease (COVID-19) in the parking lot of a Walmart, in Mexico City, Mexico January 6, 2022. REUTERS/Luis Cortes
People wait in line to be tested for the coronavirus disease (COVID-19), in Buenos Aires, Argentina January 6, 2022. REUTERS/Agustin Marcarian
A healthcare worker takes a swab sample from a man, to be tested for the coronavirus disease (COVID-19), in the parking lot of a Walmart, in Mexico City, Mexico January 6, 2022. REUTERS/Luis Cortes
Medical workers in protective suits collect swabs for nucleic acid testing during a mass testing following cases of the coronavirus disease (COVID-19) in Xuchang, Henan province, China January 6, 2022. China Daily via REUTERS ATTENTION EDITORS - THIS PICTURE WAS PROVIDED BY A THIRD PARTY. CHINA OUT. NO COMMERCIAL OR EDITORIAL SALES IN CHINA.
A healthcare worker takes a swab sample from a woman to be tested for the coronavirus disease (COVID-19) as people line in the background to be tested, in Buenos Aires, Argentina January 6, 2022. Argentina broke its record for COVID-19 infections on Wednesday, approaching 100,000 daily cases as it faces a third wave of the pandemic. REUTERS/Agustin Marcarian
Members of the Ohio National Guard assist with administering coronavirus disease (COVID-19) tests in Columbus, Ohio, January 5, 2022. REUTERS/Gaelen Morse
A healthcare worker takes a swab sample from a woman to be tested for the coronavirus disease (COVID-19), in Buenos Aires, Argentina January 6, 2022. REUTERS/Agustin Marcarian
Residents line up for nucleic acid testing during a mass testing following cases of the coronavirus disease (COVID-19) in Xuchang, Henan province, China January 6, 2022. China Daily via REUTERS ATTENTION EDITORS - THIS PICTURE WAS PROVIDED BY A THIRD PARTY. CHINA OUT. NO COMMERCIAL OR EDITORIAL SALES IN CHINA.
People queue to be tested for the coronavirus disease (COVID-19) in the parking lot of a shopping mall, in Mexico City, Mexico January 6, 2022. REUTERS/Luis Cortes
Members of the Ohio National Guard assist with administering coronavirus disease (COVID-19) tests in Columbus, Ohio, January 5, 2022. REUTERS/Gaelen Morse
A healthcare worker handles a coronavirus disease (COVID-19) rapid antigen test kit with positive result, in Buenos Aires, Argentina January 6, 2022. REUTERS/Agustin Marcarian
A healthcare worker takes a swab sample from a man to be tested for the coronavirus disease (COVID-19), in Buenos Aires, Argentina January 6, 2022. REUTERS/Agustin Marcarian
Healthcare workers are pictured at a testing center for the coronavirus disease (COVID-19), in Buenos Aires, Argentina January 6, 2022. REUTERS/Agustin Marcarian
A healthcare worker takes a swab sample from a man to be tested for the coronavirus disease (COVID-19), in Buenos Aires, Argentina January 6, 2022. REUTERS/Agustin Marcarian
A healthcare worker takes a swab sample from a woman to be tested for the coronavirus disease (COVID-19), in Buenos Aires, Argentina January 6, 2022. REUTERS/Agustin Marcarian
Musbiha (13), a student, receives her first dose of the coronavirus disease (COVID-19) vaccine at a vaccination centre in Karachi, Pakistan, January 6, 2022. REUTERS/Akhtar Soomro
A sign informing customers that coronavirus disease (COVID-19) tests are out of stock is seen at the entrance of a CVS pharmacy in Miami, Florida, January 5, 2022. REUTERS/Marco Bello
A member of the Ohio National Guard assists with administering coronavirus disease (COVID-19) tests in Columbus, Ohio, January 5, 2022. REUTERS/Gaelen Morse