Subclade K (previously known as J.2.4.1) is gaining attention because it appears to be spreading much earlier in the flu ...

This strain of avian influenza emerged in 2022 and brought major losses in the Northern San Joaquin Valley and beyond.

One person who contracted it died. The fungus is commonly found in soil in the Ohio River and Mississippi River valleys, and ...

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

Despite a bad flu season, the share of residents choosing to get vaccinated against the virus has fallen. Here are 4 possible ...

Flu cases and hospitalizations are surging, already breaking last season's records. Here's where activity is highest, what ...

Flu season in the U.S. is particularly bad this year, and a new branch of the flu family tree may be to blame.

A surprising flu experiment shows that good airflow and fewer coughs can stop the virus from spreading, even up close.

Health experts say the U.S. flu season appears to be waning with two straight weeks of decline in measures of flu activity.

A particularly infectious subvariant of influenza is keeping emergency room numbers high and causing especially severe ...

A first-time mom received backlash for saying she does not let her mom kiss her newborn. Doctors and pediatric infectious ...

California officials warn of an increase in flu-related hospitalizations and confirm a second severe-flu-related death.