In addition to grappling with a brutal heat wave, Northern Californians are now facing another common enemy: norovirus. The ...

Human metapneumovirus, or HMPV, typically spreads during winter and spring.

Flu season might be winding down — but don’t stash the tissues just yet. A little-known respiratory virus with no vaccine or ...

Prior exposure to one strain of influenza virus may weaken children's ability to mount an effective antibody response against ...

Flu has overtaken covid in infections and hospitalizations during the winter respiratory virus season, and their virulence is ...

Flu cases are “very high” across much of Idaho, federal health experts say, and another respiratory virus is on the rise as ...

As the U.S. flu season winds down, health officials say the flu vaccine didn’t work very well, with one of its worst ...

Key Takeaways This season's flu vaccine didn't work as well as usual, officials sayA new virus strain did not match the shot well Scientists are already planning for next winter's vaccines MONDAY, ...

Bird flu is spreading in across the U.S. this spring, impacting countless birds and raising concerns for farmers. Here's how to protect your animals.