NEW YORK (AP) — As the U.S. flu season winds down, health officials say the flu vaccine didn’t work very well, with one of ...

A little-known virus that causes nasty flu-like symptoms is spreading in California — and it doesn’t have a vaccine. Cases of human metapneumovirus (HMPV) have been steadily rising since winter began, ...

Experts are closely monitoring the marine animals, flagging mortalities and advising beach visitors to take extra precautions. Meanwhile, a Sonoma County poultry facility was struck by bird flu in ...

Flu season might be winding down — but don’t stash the tissues just yet. A little-known respiratory virus with no vaccine or treatment has been quietly picking up steam since the start of winter, ...

A long-running debate in vaccine design revolves around whether a vaccine should be optimized to prevent the virus from replicating inside an infected host or prevent the virus from transmitting to ...

Colorado’s mountains had record low snow levels, while Salt Lake City and Phoenix were among the cities who had their highest ...

Avian influenza detections in birds have started to decline across Europe following an autumn and winter during which circulation of the virus in waterfowl reached its highest level in five years, ...

Why flu vaccines didn’t work that well in the US this season - Flu infections surged in late December and were especially intense in some parts of the country ...