FILE PHOTO: A health worker in protective suit waits for people at a test center in front of a hospital, amid the coronavirus disease (COVID-19) outbreak, in Warsaw, Poland October 27, 2020. REUTERS/Kacper...

People wait to receive the Pfizer-BioNTech coronavirus disease (COVID-19) vaccine during a mass vaccination in Mexico City, Mexico March 8, 2021. REUTERS/Carlos JassoMEXICO CITY (Reuters) – Mexico’s...

The City of London financial district can be seen as a woman walks on a footpath along the River Thames, amid the coronavirus disease (COVID-19) outbreak, in London, Britain, March 4, 2021. REUTERS/Henry...

FILE PHOTO: A vial of AstraZeneca coronavirus disease (COVID-19) vaccine is pictured at St. Mary’s Hospital, in Phoenix Park in Dublin, Ireland, February 14, 2021. REUTERS/Clodagh KilcoyneGENEVA...