A health worker shows the media how she prepares a dose of the AstraZeneca vaccine to be administered to a patient at a vaccination center set…

Greg Brennan, a teacher and basketball coach at Southside High School, is vaccinated by nurse Abigail Fromm, at a clinic operated by Mount Sin…

A Palestinian laborer who works in Israel receives his first dose of the Moderna COVID-19 vaccine at a coronavirus vaccination center set up a…

Mary Beth Baca, a registered nurse of Douglas, Mass., and other nurses gather outside Saint Vincent Hospital in Worcester, Mass., as a strike …

Linsey Johnson, right, a dean at Meyer Levin Middle School, greets a student, Thursday, Feb. 25, 2021, in New York. In-school learning resumed…

Bianca Ahlemeier (32), a childminder in home daycare with five children, is vaccinated with AstraZeneca's vaccine by a doctor at the vaccinati…

FILE - This file photo released July. 19, 2020 on the official Facebook page of Syrian Presidency, shows Syrian President Bashar Assad, left, …

Marcio Moraes prays outside the window of an improvised ICU where his 25-year-old brother was hospitalized two days prior for COVID-19 at the …

A Palestinian that works in Israel receives a Moderna COVID-19 vaccine at the Tarkumiya crossing between the West Bank and Israel, Monday, Mar…

This photo provided by Chorus Media Group, Skippack Pharmacy owner and pharmacist Dr. Mayank Amin administers vaccine to Aubrie Cusumano while…