An expert breaks down key signs and symptoms to know if a sore throat is strep, allergies, or something else.

Researchers have found a virus kills "sleeping" bacteria. The discovery could help fight germs that can't be treated with antibiotics alone.

An expert has answers for you about the latest COVID variant, JN.1, including information about tests, vaccines, and more.

Administering a COVID-19 vaccine as a nasal spray, rather than as an injection, may increase the vaccine’s overall effectiveness.

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

Researchers have used zebrafish embryos to propagate the human norovirus, the predominant cause of acute gastroenteritis worldwide.

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

People hospitalized with seasonal influenza can suffer long-term, negative health effects, especially involving their lungs and airways.

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

Norovirus, a common stomach illness can spread almost anywhere. An expert brings you up to speed.