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 ...

H7N9 — is detected in at a poultry farm; scientists learn that past human flu exposure may provide some immunity to H5N1.

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

Influenza A Viruses Adapt Shape in Response to Environmental Pressures ... 2025 — The antibody targets a stable part of the bird flu virus, ensuring that the immune protection can resist new ...

Prior exposures to specific types of seasonal influenza viruses promote cross-reactive immunity against the H5N1 avian ...