bird flu
noun
: avian influenza
specifically
: severe often fatal influenza A caused by strains of a subtype (H5N1) of the causative orthomyxovirus (Alphainfluenzavirus influenzae) 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
Ohio saw just under 300 cases of wild bird flu since 2022, according to federal data.
—
Matthew Cupelli, Cincinnati Enquirer, 5 Dec. 2025
In the first quarter of the year egg prices were largely influenced by a breakout of avian influenza, commonly known as bird flu, causing prices to stay high.
—Olivia Evans, Louisville Courier Journal, 3 Dec. 2025
The spike was driven by a bird flu epidemic in late 2024 that caused suppliers to temporarily ration eggs.
—Francesca Pica, jsonline.com, 3 Dec. 2025
And could again spell trouble for us if a bird flu virus successfully spills over into human populations.
—New Atlas, 1 Dec. 2025
See All Example Sentences for bird flu
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Matthew Cupelli, Cincinnati Enquirer, 5 Dec. 2025
In the first quarter of the year egg prices were largely influenced by a breakout of avian influenza, commonly known as bird flu, causing prices to stay high.
—Olivia Evans, Louisville Courier Journal, 3 Dec. 2025
The spike was driven by a bird flu epidemic in late 2024 that caused suppliers to temporarily ration eggs.
—Francesca Pica, jsonline.com, 3 Dec. 2025
And could again spell trouble for us if a bird flu virus successfully spills over into human populations.
—New Atlas, 1 Dec. 2025
See All Example Sentences for bird flu
Cite this Entry
“Bird flu.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/bird%20flu. Accessed 11 Dec. 2025.
Copy CitationMedical Definition
bird flu
noun
: avian influenza
specifically
: severe often fatal influenza A caused by strains of a subtype (H5N1) of the causative orthomyxovirus (Alphainfluenzavirus influenzae) that have produced epidemics in domestic birds especially in Asia with sporadic associated human infections
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