The U.S. is in peak flu season, as the CDC releases a map of influenza activity across the country. See which states are at ...

Experts say this is the worst flu season in the U.S. in more than a decade and cases are still trending up. Flu infections have reached the highest level since the winter of 2010 and 2011 when the ...

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

Schools in at least two states canceled classes at the start of this week amid a surge in influenza cases nationwide.

Data from the CDC shows the 2025 flu season is the worst since 2009, with a number of states seeing a "very high" level of ...

The US is dealing with an unusually intense influenza outbreak that has infected between 29 and 51 million people and ...

Latest data shows which counties have been hardest hit by bird flu outbreaks among poultry flocks as the human case count climbs.

The latest data from the U.S. Centers for Disease Control and Prevention and the U.S, Department of Agriculture show the ...

A new bird flu (highly pathogenic avian influenza) outbreak has been discovered in California. The newly reported H5N9 strain was found Monday at a duck farm in Merced County, California ...