Definition of avian influenza
: highly variable influenza A of birds caused by any of the subtypes of the causative orthomyxovirus of which some strains have been or may be transmitted to other vertebrates including humans especially after undergoing mutation —called also avian flu — compare bird flu
First Known Use of avian influenza
Medical Definition of avian influenza
: influenza of birds that is caused by any of several subtypes (such as H5N2 or H7N7) of an orthomyxovirus (species Influenza A virus of the genus Influenzavirus A) of which some strains have been transmitted to other vertebrates including humans especially after undergoing mutation <Most cases of avian influenza infection in humans have resulted from contact with infected poultry (e.g., domesticated chicken, ducks, and turkeys) or surfaces contaminated with secretion/excretions from infected birds.—The Tennessee Tribune (Nashville), 23 Mar. 2006> <And as you read this, millions of birds are being eliminated in Asia and elsewhere in an effort to contain avian flu.—Barry Gewen, The New York Times Book Review, 14 Mar. 2004>—called also fowl pest, fowl plague; see bird flu
Variants of avian influenza
Seen and Heard
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