#COVID-19 vaccine

While regular boosters may help keep vulnerable people out of the hospital, annual boosters might not be necessary for everyone.

Vaccines are tested for safety, but like all medical products, they can sometimes cause side effects.

NIAID-supported research sheds light on why healthy people of the same age respond differently to vaccines.

Older people, immunocompromised people and those with underlying health conditions can benefit most from additional shots.

At least 11 people have died from COVID-19 while in ICE custody, but advocates say that may be an underestimate.

Updated Pfizer-BioNTech and Moderna bivalent boosters contain spike proteins from the original and BA.4 and BA.5 omicron variants.

Fauci, who has directed the National Institute of Allergy and Infectious Diseases since 1984, will step down in December.

Experts are casting a wide net for treatments, with few ready for formal clinical trials.

Get a COVID booster, especially if you’re older or your immune system is compromised, and don’t forget the flu shot.

These three respiratory illnesses—and others—share many of the same symptoms.

Safety tips for the evolving pandemic. Plus: Which groups—such as those with cancer or HIV—are at higher risk for COVID-19 complications?

Biden may not have used the right word when he described the pandemic as “over,” but things are trending in the right direction.

Updated boosters could go to the “worried well” who have good insurance rather than to those at highest risk.

Whether omicron coronavirus variants cause long COVID symptoms as often—and as severe—as previous variants is a matter of heated study.

The engineered protein vaccine was highly effective in a clinical trial but faced a long delay for authorization.

Fauci led the U.S. HIV research effort for nearly 40 years before becoming the nation’s leading COVID-19 medical advisor.