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

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

More than 24 million people have had seasonal flu this season, according to estimates from the Centers for Disease Control ...

Low vaccination rates may be contributing to the spread of flu, but data suggests the number of cases so far this season is ...

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

Flu cases are surging across the nation, closing nearly a dozen schools and swamping hospitals in some states. At least 24 ...

Flu cases soar across the US; Sacramento sees highest flu-related medical visits since 2009. Learn prevention tips and why vaccination rates matter.

Information has mysteriously disappeared from the U.S. government's health websites. Here's what we know, and where to find ...

Testing results from patients indicate that two strains of seasonal flu that are causing most illnesses — a Type A H1N1 and a ...

During the first years of the COVID pandemic, elevated precautions mostly suppressed the perennial flu outbreaks that ...