Find out about the COVID-19 vaccines, the benefits of COVID-19 vaccination and the possible side effects.

West Coast states are teaming up to issue their own vaccine guidelines in the face of rapid changes at the Centers for Disease Control and Prevention and the Food and Drug Administration. The federal ...

Two of the vaccines we have for COVID-19 have the distinction of being the first mRNA vaccines to see widespread use in ...

HHS Secretary Robert F. Kennedy Jr.'s vaccine advisors have set their sights on aluminum adjuvants in vaccines as part of their review of the U.S. pediatric vaccine schedule. While the concept of ...

Ian Haydon helped test Moderna's coronavirus vaccine last year. Now, he's helping test the tweaked version of that vaccine designed to fight a new, more contagious variant. "A year ago I tried the ...

Herd immunity occurs when enough people become immune to a disease, either through vaccination or previous infection. This can reduce the likelihood of it spreading and increase protection for ...

A 4-year-old boy picks out a bandage before getting vaccinated in San Jose, California, in 2022. (Jane Tyska/Digital First Media/The Mercury News via Getty Images) How we did this Pew Research Center ...