The map of flu activity across the United States continues to darken, both figuratively and literally, as case numbers spike ...

With a halt on scientific data being shared publicly, the CDC is getting crafty to warn of increasing flu hospitalizations.

As cases of H5N1, also known as avian flu or bird flu, continue to surface across the U.S., safety precautions are ramping up ...

Latest data shows which counties have been hardest hit by bird flu outbreaks among poultry flocks as the human case count ...

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 ...

This testing tells doctors specifically what subtype of flu – such as H1N1 or H3N2 – a person has. The CDC is calling on doctors and hospitals to perform subtyping on all hospitalized patients ...

And it may get worse soon. The United States’ highest month for flu illnesses is usually February, according to the CDC. But there are other respiratory viruses circulating as well. Along with ...