H5N1 influenza is evolving rapidly, weakening the effectiveness of existing antibodies and increasing its potential threat to ...

It may say spring on the calendar, but colds, flu and COVID are still making people ill. What you should know.

The H5N1 avian influenza virus is mutating to evade immune defenses in mammals following prior infection or vaccination.

New research suggests that past exposure to seasonal flu viruses may help protect people from severe illness caused by the ...

Cold germs from someone’s nose or cough can live on surfaces for hours to days, depending on many factors. Learn which ...

Early flu exposure helps immunity against H5N1 infection, with older adults having stronger antibody responses.

Birds in the United States can be affected by avian flu, also called H5N1 bird flu or avian influenza. But can it affect your ...