How long are you contagious with the flu? Experts say you can spread the virus for five to seven days after symptoms start, ...

Cases across the country had appeared to decline before new public health data showed upticks in infections.

Flu activity has ticked back up slightly in the US, thanks to a very small increase in infections caused by influenza B — ...

CHICAGO — Flu cases are increasing rapidly in Illinois as the state sees its worst flu season in more than 15 years.

Q. I’m immunocompromised and take medication for high blood pressure, irregular heartbeat and cholesterol. I tested positive for COVID and flu while traveling to California. Probably the plane trip ...

With months left of flu season, influenza cases are on the rise in California and transmission is high in the Bay Area, data ...

Flu activity increased nationwide after three weeks of decline, driven in part by rising influenza B activity, according to the CDC’s latest Fluview report. Although flu-related hospital admissions ...

Learn how Subclade K, a variant of the influenza A virus, is affecting immune responses and contributing to this year’s intense flu season.

Learn more about seasonal flu, including where to get a flu vaccine and how to treat seasonal flu.

With flu activity on the rise across L.A. County, health officials are urging residents 6 months and older to get vaccinated ...