'''Avian flu''' is a highly contagious [[viral]] [[disease]] with up to 100% mortality in domestic fowl caused by influenza. All types of birds are susceptible to the virus, but outbreaks occur most often in [[chicken]]s and [[turkey]]s. 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. | '''Avian flu''' is a highly contagious [[viral]] [[disease]] with up to 100% mortality in domestic fowl caused by influenza. All types of birds are susceptible to the virus, but outbreaks occur most often in [[chicken]]s and [[turkey]]s. 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. |