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

Each year, flu experts from around the world gather to map out recommendations for next winter's flu vaccine. This year, it's ...

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

U.S. medical services providers are seeing the greatest numbers of flu cases since the 2009-2010 flu season, the Centers for ...

Close to 8% of visits for respiratory illness to outpatient providers, including urgent cares and doctors offices, reported to the CDC this week were people sick with influenza. That is the worst ...

The U.S. Centers for Disease Control and Prevention (CDC) announced on Thursday its recommendation to test hospitalized influenza A patients more quickly and thoroughly to distinguish between ...

Outpatient health care visits for flu-like illnesses are at their highest levels in 15 years, according to data updated ...

Flu cases have been surging across the United States, according to the latest estimates of the US Centers for Disease Control and Prevention (CDC) released on Friday. There have been at least 24 ...

(NEXSTAR) – 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 Centers for Disease Control and Prevention since the ...

Officials from the Centers for Disease Control and Prevention (CDC) recommend that hospitals speed up testing people who are hospitalized with the flu for H5N1 bird flu. Health care workers in ...