Those infected with the flu are most contagious during the first three days, the CDC said. In some cases, however, people can ...

Flu cases are rising across the U.S. Here's what you need to know about symptoms, flu duration and the new strain ...

A highly contagious flu mutation called subclade K is sweeping the nation, raising health concerns about vaccine effectiveness this season. Here are the states at most risk.

Flu cases are slowly rising in Illinois in the lead-up to holiday gatherings this week, so what should you know before you get together with friends and loved ones and how do you know if someone could ...

With flu cases surging in Illinois as a new and mutated variant rapidly spreads, mitigating spread of those who contract the virus is increasingly important. But how long are you actually contagious ...

It is peak cold and flu season, and this year’s influenza virus strain is making it a season to remember. 90% of flu cases this year are tied to influenza A strain, which has undergone several ...

Norovirus, the highly contagious stomach bug that causes vomiting and diarrhea, is surging again. Here's what to expect and ...

But what is everyone actually sick with at the moment? According to government data, adenovirus has been making the rounds in ...

As North Carolina illness rates spike post-holidays, here's what to know about the spread of flu, stomach flu and COVID-19.

Last winter, flu activity broke records in the U.S. And while this flu season is just starting — and it's already shaping up to be another rough one. Flu is picking up steam earlier this year than ...

The surge in cases arrives as four factors threaten to make the illness more severe than the usual, according to doctors.

Is it flu A or flu B, and how long is it contagious? Here's what to know about the flu virus running rampant in New Jersey, ...