a very contagious viral disease with around completely death in domestic fowl. Due to influenza A virus subtypes H5 and H7. Various types of wild birds are vunerable to the virus, but outbreaks happen most often in birds and turkeys. The illness is brought by migratory wild birds which could carry the virus, but reveal no signs and symptoms of infection. Humans are just seldom impacted. Also known as fowl plague, avian flu, and bird flu.