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

U.S. medical services providers are seeing the greatest numbers of flu cases since the 2009-2010 flu season, the Centers for ...

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

Cold and flu season is in full swing. As the months get colder and folks are indoors more often, these respiratory illnesses ...

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 ...

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

San Mateo County public health officials reported finding H5N1 bird flu in a pet cat and a backyard poultry flock.

NEW YORK (AP) — The U.S. winter virus season is in full force, and by one measure is the most intense in 15 years.

One indicator of flu activity is the percentage of doctor’s office visits driven by flu-like symptoms. Last week, that number ...

Cases of the seasonal flu in the U.S. have reached their highest numbers in more than a decade, according to the Centers for Disease Control and Prevention.

What to Know State and local health officials are reporting a new wave of influenza cases that is entering its seventh week ...

The Centers for Disease Control and Prevention resumed publishing its weekly scientific report Thursday after an ...