Definitions for "Avian flu"
A highly contagious viral disease with up to 100% mortality in domestic fowl caused by influenza A virus subtypes H5 and H7. All types of birds are susceptible to the virus but outbreaks occur most often in chickens and turkeys. The infection may be carried by migratory wild birds, which can carry the virus but show no signs of disease. Humans are only rarely affected.
A deadly infection caused by a virus found in birds that may be transmissible to humans.
Avian flu is relating to, or characteristic of birds. Avian influenza can infect birds.