Respiratory virus season is in full swing across California, with several illnesses spreading across the state. Cases of ...

The San Francisco Department of Public Health announced the first two flu-related deaths recorded in the city this ...

Medical experts debunk flu shot myths: vaccines use inactive virus that cannot cause illness. Discover what side effects actually mean for your immunity.

Dutch authorities have detected antibodies linked to the H5N1 avian influenza virus in a dairy cow, marking the first known ...

Flu-related pediatric deaths have doubled since last week, according to the CDC. Here's what to know this week, including ...

The Influenza A H3N2 virus subclade K represents a change in the basic structure of the influenza virus.

A group of volunteers spent days locked in a small hotel room with people actively infected with flu. They played games, ...

Influenza, the virus responsible for flu, is known to spread through aerosols (microscopic droplets) released when an infected person coughs, sneezes, or even breathes normally. It can also pass from ...

LAWRENCE — Six viral diseases — including COVID-19, the flu and norovirus — have been found at high concentrations in ...

Researchers report that shared indoor space alone is insufficient for influenza spread, highlighting the importance of ...

A case of avian influenza was recently identified at a Burlington County commercial bird farm, officials announced Thursday.

The spike in flu cases widely referred to in media reports as a "superflu" is largely driven by a newly identified subtype of ...