Partial CDC data suggest that influenza deaths may have already reached as high as 2% of deaths for the week ending on Feb. 1 ...

A new strain of bird flu has infected a dairy worker in Nevada, marking the first cow-spread case, the CDC has reported.

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

The newer strain had been seen before in more than a dozen people exposed to poultry, but this is the first time an infection ...

Influenza A — a nasty flu strain that fueled the 2009 flu epidemic — has been landing Ohioans in the hospital since the ...

Ten states and New York City are experiencing the highest levels of flu activity, according to the CDC. Flu cases are surging ...

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

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

For the first time since 1952, publication of the CDC's Morbidity and Mortality Weekly Report was halted. It returned on Feb.

The U.S. influenza rate is at or near its highest level in at least 15 years and is still on the rise, the U.S. Centers for ...

Influenza cases continue to mount with the virus reaching activity levels in the U.S. not seen for the last 15 years, according to the Centers from Disease Control and Prevention.