Researchers have activated specific immune cells that induce broadly neutralizing antibodies in monkeys, a first step toward an HIV vaccine.

If widely adopted like annual flu vaccines, RSV vaccines would dramatically reduce the disease's burden of illness and death in the US.

Probiotics may be a relatively simple and inexpensive way to treat people after a COVID exposure, a new study suggests.

Most parents in the US say they intend to vaccinate their children against COVID-19, influenza, and RSV—the so-called "tripledemic."

Infants have new protections against respiratory syncytial virus (RSV), but availability is limited. Two experts discuss what you should know.

The number of Americans who think vaccines approved for use in the US are safe dropped to 71% from 77% in April 2021, a poll finds.

The global COVID-19 vaccination campaign saved 2.4 million lives in 141 countries. Equitable vaccine distribution could have saved 670,000 more.

Children in child care centers don't spread COVID-19 at significant rates to caregivers, other kids at the center, or to family members.

A vaccine designed to protect against three different deadly coronaviruses shows promise in mouse studies, researchers report.

Experts have answers for you on the updated COVID vaccines, including when to get the jab, which variants they should work against, and more.