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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
The recommendation coincides with a new report finding asymptomatic bird flu infection in some workers.
—Erika Edwards, NBC News, 7 Nov. 2024
The strain of bird flu virus in the pig is slightly different than the one that has been plaguing dairy cows in California and other states, which is known as B3.13.
—Tribune News Service, The Mercury News, 31 Oct. 2024
Since 2022, the bird flu virus has resulted in the culling of over 100 million poultry birds in the nation's worst-ever bird flu outbreak, and this year 36 people have tested positive for the virus.
—Nina Turner, Newsweek, 30 Oct. 2024
The strain of bird flu virus in the pig is slightly different from the one that has been plaguing dairy cows in California and other states, which is known as B3.13.
—Susanne Rust, Los Angeles Times, 30 Oct. 2024
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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 3 Dec. 2024.
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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