Virus

Experts explain how to shorten a flu infection.

The 2024-2025 COVID-19 vaccines are available, and the CDC recommends that certain groups get two doses, spaced six months apart.

Early experiments suggest a patch that delivers harmless electric currents into the skin can thwart certain bacterial infections. However, it has not yet been tested in humans.

U.S. health officials are investigating a multi-state outbreak of bacterial infections that has been linked to McDonald's Quarter Pounders.

Breast self-exams used to be recommended as a part of routine breast cancer screening. Here's why the guidelines changed and what experts recommend instead.

Whether intentional or not, the way mega-settlements in southeastern Europe from 6,000 years ago were laid out would have cut down on the spread of disease.

Severe flu infections can lead to a range of deadly complications, especially in people whose immune systems are compromised by age or disease.

Viruses and bacteria have been around for billions of years, but which came first?

Many factors affect the infectious period of seasonal influenza, commonly called "the flu," but there are some good rules of thumb for when it's safe to return to work or school.

A new study in mice suggests that dysfunctional mitochondria may change the composition of the gut microbiome and thus drive Crohn's disease.