The flu virus is changing in ways never seen before, increasing infections and raising concerns about vaccine effectiveness and public health risks.

A component found in all fungi may provide a shield against flu-related lung damage, according to a new study.

Influenza viruses cause tens of millions of illnesses and thousands of deaths in the United States each year. There are two players every flu season: influenza Type A and Type B. Influenza A tends ...

Influenza A virus particles strategically adapt their shape -- to become either spheres or larger filaments -- to favor their ability to infect cells depending on environmental conditions, according ...

As cases of seasonal influenza surge, health officials are closely monitoring a growing threat—the potential fusion of human ...

Influenza A virus particles strategically adapt their shape—to become either spheres or larger filaments—to favor their ability to infect cells ...

Nearly 119,000 birds have been culled at a farm in California after a bird flu called H5N9 was detected among the poultry ...