A contagious new COVID-19 variant called NB.1.8.1, aka "Nimbus," is now dominant in the United States, CDC data show. What to know about symptoms and vaccines.

Forests and nearby communities could start looking much different as a tree native to Maryland falls victim to a microscopic ...

When hunter-gatherers began living close to animals, the pathogens that cause the plague and leprosy got closer too.

A sore throat, loss of taste, and a burning tongue are telltale signs something is wrong. But the culprit might surprise you.

The US is grappling with a significant measles outbreak in 2025, with 1,267 cases confirmed across 38 states, surpassing ...

H. pylori (Heliobacter pylori) is a type of bacteria that infects your stomach. It can damage the tissue in your stomach and the first part of your small intestine (the duodenum). In some cases it can ...