Highly pathogenic avian influenza A(H5N1) viruses have caused widespread infections in dairy cows and poultry in the United ...

To round out the name, the viruses are given an H and N number to indicate a subtype. A full name might then look like this: ...

A 13-year-old Canadian girl recovered after being hospitalized in critical condition with H5N1 avian influenza, researchers ...

As flu season ramps up in the U.S., influenza is not as simple as it first appears, with several different strains in play.

The risk of respiratory syncytial virus, or RSV, is on the rise, along with that of other illnesses including the flu, stomach flu and COVID-19.

So far, the H5N1 virus isn't transmitted between people — but the CDC has found a mutation in a human case "concerning." ...

Bird flu, also called avian influenza, is a viral infection that can cause flu in birds and sometimes spread to mammals, including humans. Migrating waterfowl (wild ducks, geese, and storks ...

Most seasonal flu viruses are influenza type A, which usually start earlier in the season, with type B viruses circulating later in the winter. Currently, A viruses of H1N1 and H3N2 are ...

Each week some revelation about bird flu seems to flutter through the news cycle. Here's what the latest research is saying ...

The ongoing spread of bird flu in the United States has alarmed experts -- not just because of human cases causing severe illness, but also due to troubling new instances of infections in cats.