The winter flu season features two types of influenza. Here's what you need to know about them and how they differ.

Flu hospitalizations and doctor visits are at a 15-year high. Why is this flu season so bad? Doctors discuss influenza trends ...

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

All age groups in the United States are experiencing a "high severity" of influenza cases among all age groups for the first ...

“You could still get infected with another strain like H3N2.” Unfortunately, influenza shares a number of symptoms with respiratory viruses like COVID-19 and RSV, so it can be difficult to know which ...

Doctor's office visits for influenza symptoms have hit their highest level ... It’s not just the seasonal flu (H3N2), but we’re also seeing the swine flu (H1N1) rearing its ugly head again ...

Flu A also has two subtypes that routinely circulate, H1N1 and H3N2. As for getting the flu ... Unfortunately, influenza shares a number of symptoms with respiratory viruses like COVID-19 and ...