Flu infections are at or near their highest levels in at least 15 years and are still rising, the Centers for Disease Control and Prevention says.

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

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

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

Data on flu test positivity and Tamiflu prescription fills show that influenza activity has already surpassed the past 7 ...

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

The newly reported H5N9 strain was found Monday at a duck farm in Merced County, California, according to the World ...

The Centers for Disease Control and Prevention resumed publishing its weekly scientific report Thursday after an unprecedented pause, but information about the bird flu virus that was supposed to ...

Of course, other viral infections can be mistaken for flu. But COVID-19 appears to be on the decline, according to hospital data and to CDC modeling projections. Available data also suggests ...

Unable to view our graphics? Click here to see them. During the past three years, bird flu has been reported in more than 145 million birds in 618 counties and all 50 states, according to CDC ...