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

Influenza A — a nasty flu strain that fueled the 2009 flu epidemic — has been landing Ohioans in the hospital since the ...

Levels of influenza nationwide are now at the highest they have been since the peak of the 2009 swine flu pandemic, according ...

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

I think all of us know somebody who’s gotten the flu recently,” says Dr. Luis Ostrosky, chief of infectious disease at ...

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

The U.S. winter virus season is in full force, and by one measure is the most intense in 15 years.

Ten states and New York City are experiencing the highest levels of flu activity, according to the CDC. Flu cases are surging ...

A surge in flu-related hospitalization across western Pennsylvania – the highest statewide since 2010 – has some health centers reintroducing mask mandates. Others, including officials at Chan ...

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

The North Carolina Department of Health and Human Services is reporting two pediatric flu-related deaths, the first for the ...