With the Delta variant in play, federal health officials are analyzing the latest numbers to look at the frequency and seriousness of COVID-19 breakthrough infections. Will we need booster shots? And ...

Millions of Americans are one step closer to getting a COVID-19 booster shot. The Food and Drug Administration (FDA) amended its emergency use authorization for a Pfizer booster shot Wednesday. It ...

After struggling for months to persuade Americans to get the COVID-19 vaccine, U.S. health officials could soon face a fresh challenge: talking vaccinated people into getting booster shots to gain ...

As more Americans receive their COVID-19 vaccination daily, many are wondering how long they'll be effective for and whether some people will require booster shots at some point. Dr. Elizabeth Hudson, ...

Moderna says it is in the process of developing a single-shot vaccine that could serve as a COVID-19 booster shot and a flu shot. In a press release Thursday touting its fifth annual "R&D Day," ...

Johnson & Johnson said Wednesday that new data from early trials of a booster shot of its COVID-19 vaccine provides a "rapid and robust increase in spike-binding antibodies" that fight off the virus.

NEW YORK -- In the next month, millions of Americans will get ready to roll up their sleeves for a third dose of the COVID-19 vaccine. But when it comes to booster shots, it's not as simple as "more ...

WASHINGTON, D.C. — U.S. health officials announced Wednesday that booster shots will soon be available to Americans who have received the COVID-19 vaccines made by Pfizer and Moderna. Officials with ...