The winter flu season features two types of influenza. Here's what you need to know about them and how they differ.

Influenza levels in the US are the highest they've been in 15 years amid winter weather and a second wave of the virus.

Partial CDC data suggest that influenza deaths may have already reached as high as 2% of deaths for the week ending on Feb. 1 ...

The flu is spreading far and wide across the U.S. – and influenza A is largely to blame. Of all the flu tests reported to the ...

Is it common for the flu to zap us twice in the winter months? Massachusetts, and the U.S. for that matter, had a surge in ...

Flu deaths have surpassed COVID-19 in California for the first time since the pandemic, with concerns over low vaccination rates and a likely severe flu season.

Does it feel like you know a lot of people fighting the flu virus this winter? The Centers for Disease Control and Prevention ...

The worst flu season in years is swamping California, prompting a renewed surge in hospitalizations as officials warn the ...

It’s not unusual historically to see high numbers of respiratory viruses floating around during this time frame,” a UNC ...

The flu is walloping every corner of Massachusetts in an unusual second surge of the season, with people reporting flu-like ...

Health experts said a "very high" level of influenza is circulating in Virginia, which is responsible for 7 deaths, including ...