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avian influenza

noun
  1. an acute, usually fatal viral disease of chickens and other domestic and wild birds except pigeons, characterized by sudden onset of symptoms including fever, swollen head and neck, bluish-black comb and wattle, and difficult respiration.
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Also called bird plague, fowl plague.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018