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 fluKeep scrolling for more
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Time Traveler for avian influenza
The first known use of avian influenza was in 1965
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