"avian flu." YourDictionary, n.d. Web. 14 October 2018. <http://www.yourdictionary.com/avian-flu>.
avian flu. (n.d.). Retrieved October 14th, 2018, from http://www.yourdictionary.com/avian-flu
A potentially fatal infection in birds caused by any of various subtypes of the influenza virus, especially the H5N1 virus, which is highly contagious among birds and can be transmitted to humans who have been in direct contact with infected birds. Also called bird flu .