A nasty stomach bug has been spreading across the country, including California, in recent months — leaving people feeling nauseous, achy or worse.

The rise of bird flu across farms in California has raised questions about the virus and its potential threat to humans.

A Louisiana resident has died after being hospitalized with bird flu in December of last year, marking the first known ...

Valley fever is an infectious disease caused by the Coccidioides fungus that grows in the soil and dirt in some areas of ...

The CDC called findings about bird flu mutations in a human case “concerning” but says the risk to the general public from ...

As China continues to monitor an increase in cases of human metapneumovirus (HMPV), here's what you need to know about the ...

Santa Ana winds in Southern California are often-fierce winds that topple power lines and trees and can turn a spark into a ...

Flu is taking off in the U.S., with 40 states reporting high or very high levels of flu-like illness last week.

Using a common antibiotic following sex can dramatically reduce a person's risk of some sexually transmitted infections, a ...

Emergency room visits for flu and RSV are very high, according to the latest data, with numbers for COVID-19 low for now but ...