Respiratory viruses are continuing to spread across the United States and such activity "is expected to continue for several ...

Avian influenza A (H5N1) has mutated, so the symptoms of bird flu could change as more people get sick in 2025.

We are expecting another active season of respiratory virus transmission this fall and winter in the US,” says Erica Johnson, ...

Viral sicknesses have risen in early 2025 amid the ongoing “quad-demic” in the U.S., referring to three respiratory viruses and one gastrointestinal disease, according to the Centers for Disease ...

The U.S. is seeing a "quad-demic" as cases of COVID-19, flu, RSV and norovirus spread at the same time. Experts said this is ...

The US Centers for Disease Control and Prevention is urging hospitals to accelerate advanced testing of people they suspect ...

People hospitalized for flu should be tested for bird flu within 24 hours, the U.S. Centers for Disease Control and ...

Officials from the Centers for Disease Control and Prevention (CDC) recommend that hospitals speed up testing people who are ...

A child ill with fever and conjunctivitis in San Francisco tested positive for bird flu but had no known source of ...

Twenty states (plus D.C.) had "very high" levels of the virus present in wastewater, an increase from 16 states the week before.

At the direction of Congress in the 2023 Consolidated Appropriations Act, CDC, USDA, and DOI developed this framework to ...

COVID-19, influenza, RSV, and norovirus—have created what experts are calling a "quad-demic" in the U.S. Here's what to know ...