The U.S. is in peak flu season, as the Centers for Disease ... Case counts vary by state, however. Each week, the CDC releases a map of influenza activity across the country.

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

California is one of the states hit especially hard by this year's brutal flu season, with more than 900 ... as shown in the map below. This is the second-most severe category on the CDC's map, after ...

The flu season has reached its peak, according to new data from the Atlanta-based CDC. This comes just weeks after CDC data ...

and there have been no cases where the bird flu spread from person-to-person, the CDC said. The agency added that "the current public health risk is low," as of Tuesday. Among the more recent ...

Griffin said the flu is “the most common” illness infectious disease consultants are being called for in hospitals right now. This story was updated to add current flu CDC map.

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

Each week, the CDC releases a map of influenza activity across the country. The color-coded map indicates each state’s activity level, ranging from minimal to very high. Flu activity is ...

California is one of the states hit especially hard by this year's brutal flu season ... as shown in the map below. This is the second-most severe category on the CDC's map, after "very high ...