President Joe Biden, Jill Biden, Vice President Kamala Harris and Doug Emhoff hold a moment of silence as the U.S. records 500,000 deaths from coronavirus.

A health worker collects a nasal swab sample from a man in Amritsar, India, on Feb. 22.

A healthcare worker receives a dose of the Johnson & Johnson vaccine.

An artist interacts with locals during a campaign to promote vaccination against COVID-19 in Medellin, Colombia.

A teacher in Cardiff, Wales, welcomes students back to class on Feb. 23.

A COVID-19 patient speaks to a relative over the phone from a health center in Idlib, Syria.

New Americans recite the Oath of Allegiance during an outdoor ceremony in Los Angeles on Feb. 24.

Entertainment workers staged a protest against government restrictions on performances in Milan, Italy.

A health care worker vaccinates former Palestinian health minister Jawad Tibi with the Sputnik V vaccine from Russia.

The Pfizer-BioNTech vaccine is administered to a disabled patient in Trento, Italy.

Hong Kong Chief Executive Carrie Lam receives the vaccine.

Security personnel patrol an emergency hospital for COVID-19 patients in the Ukraine on Feb. 24.

Vice President Kamala Harris visits a vaccination center in Washington, D.C.

A pilgrim holds a bible in Saint Peter's Square in Vatican City.