Respiratory viruses are usually most active from October through March, health officials say.

California health officials confirmed the ‘super flu' has led to the second pediatric flu-associated death this season.

Flu season started slowly in California this year. But after people gathered for the holidays, doctors and nurses at Kaiser ...

California public health officials cautioned more children are testing positive for the flu this season. Here are flu ...

State health officials confirmed a second pediatric death associated with the flu this season. Here's what to know.

Several illnesses - including COVID-19 - are currently circulating statewide.

The flu season is here in full swing with thousands of confirmed flu cases in California. But how bad is it this season? Should you be concerned about the new "super flu" strain? Here's what to know: ...

The so-called "super flu" – a strain that doctors say appears to last longer and be very transmissible – is spreading in California. "It really seems to last a long time," UCSF Dr. Monica Gandhi said.

(FOX40.COM) — The California Department of Public Health reported that the seasonal influenza activity has increased in all California regions, as officials are seeing an increase in hospital ...

There are two types of flu that circulate in the fall and winter: Influenza A and Influenza B. Influenza A viruses are particularly unique because they can mutate to cause novel viruses meaning ...