The U.S. Food and Drug Administration has authorized booster shots of the Moderna and Pfizer COVID-19 vaccines for all adults ages 18 and older. On Friday, the FDA announced it had amended the ...

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.

A third dose of the Pfizer/BioNTech COVID-19 vaccine can "strongly" boost protection against the delta variant -- beyond the protection afforded by the standard two doses, suggests new data released ...

Gen. Colin Powell, former secretary of state, died Monday at 84 from COVID-related complications, though he was fully ...

As measles cases continue to spread across the United States, many Americans may be asking themselves if they need a measles vaccine "booster" to enhance protection. The Centers for Disease Control ...