It's an unusual winter for respiratory illnesses. The flu is peaking twice: once in early January and again in February.

This article will help you to understand the early symptoms of Japanese influenza and how it can lead to pneumonia.

Migrant farmworkers are on the front lines of the H5N1 surge — but deportation fears complicate virus surveillance ...

The U.S. winter virus season is in full force, and by one measure is the most intense in about 15 years. One indicator of flu ...

Dairy herds in Nevada have been infected by a version of the H5N1 bird flu not previously seen in cows, putting virologists ...

The newer variant of avian influenza that recently infected dairy cattle in Nevada has a genetic change that’s thought to ...

While we often refer to it as "the flu," the influenza virus has several strains, with flu A and flu B considered the most ...

There are some new tools to help this respiratory virus season: over-the-counter tests that can identify whether an illness ...