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

This year’s flu season is on track to be the worst it’s been since before the Covid-19 pandemic, as respiratory illnesses surge to a second peak. There have already been at least 24 million illnesses, ...

Scientists were slow to recognize that Covid spreads through the air. Some are now trying to get ahead of the bird flu.

The flu can also cause a general feeling of fatigue or malaise, Ray says, as well as gastrointestinal issues like diarrhea ...

Influenza is a highly contagious viral infection that affects the respiratory system. Although often dismissed as a seasonal illness, it can lead to severe complications such as pneumonia, organ ...

Six dairy herds in Nevada have tested positive for a newer variant of the H5N1 bird flu virus that’s been associated with ...

Recent history makes clear that microbiological disasters can strike anytime. But a longer history should remind us of the ...

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