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bird flu
noun
: avian influenza
specifically
: severe often fatal influenza A caused by strains of a subtype (H5N1) of the causative orthomyxovirus that have produced epidemics in domestic birds especially in Asia with sporadic associated human infections
Examples of bird flu in a Sentence
Recent Examples on the Web
Wild birds potentially carry mites and diseases, including avian influenza, commonly known as bird flu.
—
Lauren Landers, Better Homes & Gardens, 15 Feb. 2025
With bird flu killing millions of egg-laying chickens, egg prices have been breaking records.
—
Bloomberg, The Mercury News, 14 Feb. 2025
The hospitalization comes just days after bird flu cases were also confirmed in people in Nevada and Ohio.
—
Alexander Tin, CBS News, 14 Feb. 2025
The region's figure was $2.33 in October, before the current wave of bird flu began to spread, per Expana.
—
Madalyn Mendoza, Axios, 14 Feb. 2025
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Word History
First Known Use
1972, in the meaning defined above
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Cite this Entry
“Bird flu.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/bird%20flu. Accessed 20 Feb. 2025.
Medical Definition
bird flu
noun
: avian influenza
specifically
: severe often fatal influenza A caused by strains of a subtype (H5N1) of the causative orthomyxovirus that have produced epidemics in domestic birds especially in Asia with sporadic associated human infections
More from Merriam-Webster on bird flu
Britannica.com: Encyclopedia article about bird flu
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