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: ...

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

As bird flu infections rise in dairy cattle and chickens, human cases are ticking up too, leaving many people to wonder ...

N o one wants to be sick during the holidays, but the flu virus loves this time of year. It thrives in cold, dry conditions.

The first severe case of H5N1 bird flu was confirmed in Louisiana. Here is a map of other states that have been affected.

California officials have declared a state of emergency over the spread of bird flu, which is tearing through dairy cows in ...

Learn why antibiotics are not effective against influenza, and what better options exist for preventing and treating the flu.