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
Which Indiana counties have detected bird flu?
—
Katie Wiseman, IndyStar, 17 Oct. 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, 15 Oct. 2025
After a relatively quiet summer for the bird flu, H5N1 spiked when water fowl began their migration.
—Joan Morris, Mercury News, 13 Oct. 2025
The biotech company Moderna was developing a bird flu vaccine that used the mRNA platform, but the Department of Health and Human Services canceled its grant.
—Evan Bush, NBC news, 9 Oct. 2025
See All Example Sentences for bird flu
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Katie Wiseman, IndyStar, 17 Oct. 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, 15 Oct. 2025
After a relatively quiet summer for the bird flu, H5N1 spiked when water fowl began their migration.
—Joan Morris, Mercury News, 13 Oct. 2025
The biotech company Moderna was developing a bird flu vaccine that used the mRNA platform, but the Department of Health and Human Services canceled its grant.
—Evan Bush, NBC news, 9 Oct. 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 22 Oct. 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 that have produced epidemics in domestic birds especially in Asia with sporadic associated human infections
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