It’s not totally clear why flu is hitting so hard this year. One possibility is that it got off to a late start, so the winter holidays arriving and kids going back to school may have fueled a second peak. This year’s flu vaccine provides a similar level of protection as that of recent years, but that protection wanes as the season goes on.

The worst flu season the United States has had in more than a decade may have reached its peak, according to data from the US Centers for Disease Control and Prevention.

One of the worst flu seasons in years has reached its peak and is improving, officials with the Centers for Disease Control and Prevention announced Friday.

Or were you flattened by the flu and now have a cough that won't go away? You are not alone. The U.S., including Arizona, is in the midst of a nasty wave of influenza: the first "high severity" U.S. season in seven years,

Yes, seasonal flu shots are still available, and no, it’s not too late to get yours. But you’d be forgiven for being confused, because the Centers for Disease Control and Prevention (CDC) has halted one of its educational flu vaccine campaigns.

Lab tests suggest a strain of the flu virus circulating this season may not be "well-recognized" by the flu vaccine.

Flu activity remains "elevated" in the U.S. but is starting to show signs of abating, according to new CDC data published Friday.

The CDC reported that seasonal influenza activity remains elevated nationally, although it has decreased for two consecutive weeks. Data to date suggests the season has peaked; however, flu-related medical visits,

WELL, WE ARE IN THE MIDST OF ONE OF THE WORST FLU SEASONS IN OVER A DECADE, WITH DOCTOR VISITS FOR FLU SYMPTOMS NOW AT A 15 YEAR HIGH. NATIONWIDE, MORE THAN 50,000 PEOPLE WERE ADMITTED TO THE HOSPITAL WITH THE FLU.

The current flu season is shaping up to be the worst in a decade. So far, there have been at least 29 million illnesses and 370,000 hospitalizations related to the flu -- the most since the 2015-2016 season, according to the U.S. Centers for Disease ...