A medical worker attends a training session to learn how to give coronavirus vaccine shots at the Korean Nurses Association in Seoul, South Ko…

First-grade students wear masks and socially distance in the gym during class at San Juan Bautista technical school in Lambare, Paraguay, Wedn…

A health worker is administered the Pfizer-BioNTech COVID-19 vaccine on the first day of the vaccination campaign at the Clinique for Infectio…

Catholic Priest Paul Soper, right, uses a swab out of concern for the coronavirus, to apply ash to the forehead of a parishioner during Ash We…

A man gets the coronavirus vaccine at an outdoor vaccination site at Lakewood Ranch Wednesday, Feb. 17, 2021, in Bradenton, Fla.

Medical worker wearing personal protective equipment (PPE) listen to briefing at a COVID-19 testing center in Shah Alam city, Selangor states,…

A woman receives a shot of COVID-19 vaccine during a mass vaccination for traders and workers at Tanah Abang Market in Jakarta, Indonesia, Wed…

A man receives a Pfizer/BioNTech vaccine against COVID-19 at a vaccination center in Bayonne, southwestern France, Wednesday, Fev. 17, 2021. F…

A woman wearing a face covering due to the COVID-19 pandemic decorates a shop window in London, Wednesday, Feb. 17, 2021, as the lockdown continues.

A health worker checks the temperature of a passenger at Bandra train station in Mumbai, India, Wednesday, Feb. 17, 2021. Health officials hav…