Ducharme is a contributor to TIME. A health worker in Chile vaccinates someone with an AstraZeneca shot as a third booster dose against COVID-19 on Aug. 10, 2021. Ducharme is a contributor to TIME.

Pfizer Inc. (PFE) and BioNTech SE (BNTX) announced on Monday that their updated COVID-19 vaccine elicited a robust immune response in a late-stage trial among adults aged 65 and older, as well as ...

The vaccines currently used in the US still offer strong protection against severe disease and death, especially if people have gotten their recommended boosters. [iStockphoto] Pfizer asked U.S.

The Centers for Disease Control and Prevention on Tuesday recommended people 6 months and older receive an updated COVID vaccine to protect themselves against getting sick or hospitalized from the ...

A guide to coronavirus vaccination rollout and what you need to know about the authorized vaccines. Some 63.8% of Americans have received both doses of the two-shot Pfizer-BioNTech and Moderna drugs ...

WASHINGTON - The U.S. government has purchased an additional 200 million doses of the Pfizer-BioNTech COVID-19 vaccine and has the option for an "updated version" of the shot if needed, the companies ...

The move by the Food and Drug Administration tweaks the recipe of shots made by Pfizer and rival Moderna that already have saved millions of lives. The hope is that the modified boosters will blunt ...