The H5N1 avian flu is circulating in cows and other mammals. Whether it will make a permanent leap to humans is another ...

Influenza vaccine programs help to considerably lower the burden of disease, even when not everyone takes up the offer of a shot. A new study has confirmed this but also provides us with a stark ...

Like clockwork, flu viruses seem to strike more people in winter than in any other season—and there are several reasons for that.

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

Learn interesting facts about the flu, a viral infection that targets the respiratory system.

Flu A is more widespread and often the dominant strain during flu season. Flu B generally causes milder illness compared with flu A, but severe cases can still occur.

Holidays are upon us — and so is the flu. More Americans are getting infected with seasonal influenza and seeking care, according to Centers for Disease Control and Prevention data. “It is ...

What does it mean to have flu A or flu B this season, and do these types of flu have the same symptoms? Here's what to know about the flu viruses.

It’s been a brutal flu season. Rates of hospitalizations and outpatient visits for influenza are at a 15-year high, according to data from the U.S. Centers for Disease Control and Prevention ...

April 21, 2025 How bird flu differs from seasonal flu − an infectious disease researcher explains Avian flu strains tend to only affect birds, but the current outbreak has spread to cattle and ...

2nd surge of flu cases leads to school closures Schools in at least four states are closing on Friday to allow students, teachers and staff to recover from illnesses.

The convergence of multiple flu strains in one animal can allow new virus strains to form—just as they did in past pandemics.