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

The Centers for Disease Control and Prevention lists Illinois in the high category for flu cases, and across the Chicago area ...

The Centers for Disease Control and Prevention lists Illinois in the high category for flu cases, and across the Chicago area ...

The weekly number of lab-confirmed influenza cases on Long Island was the highest in at least the past two seasons, with ...

Two state health departments have issued new guidance on testing for the bird flu, following a CDC advisory, even as it says ...

The U.S. winter virus season is in full force, and by one measure One indicator of flu activity is the percentage of doctor’s ...

With data showing a significant rise in flu cases nationwide, medical experts are describing it as the worst flu season since ...

Florida experiences "very high" flu activity, causing public health concerns and prompting calls for vaccinations and early ...

The flu is spreading far and wide across the U.S. – and influenza A is largely to blame. Of all the flu tests reported to the ...

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

New York has ordered a weeklong shutdown of all live bird markets in New York City, Westchester and Long Island after seven ...