swine influenza

noun

: influenza A of swine that is caused by any of several subtypes (such as H1N1 or H3N2) of the causative orthomyxovirus and in which sporadic transmission to humans has occurred compare swine flu

Examples of swine influenza in a Sentence

Recent Examples on the Web
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Going into the 1976-77 winter season, the world waited – and prepared – for an H1N1 swine influenza pandemic that never came. Discover Magazine, 7 Sep. 2024 Autopsy specimens unexpectedly tested positive for an H1N1 swine influenza virus. Discover Magazine, 7 Sep. 2024

Word History

First Known Use

1919, in the meaning defined above

Time Traveler
The first known use of swine influenza was in 1919

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Cite this Entry

“Swine influenza.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/swine%20influenza. Accessed 10 Apr. 2025.

Medical Definition

swine influenza

noun
: influenza of swine that is marked by fever, lethargy, labored breathing, coughing, and anorexia and that is typically not fatal but may be complicated by development of bronchopneumonia or secondary bacterial infection

Note: Swine influenza is caused by any of several subtypes (such as H1N1 or H3N2) of an orthomyxovirus (species Influenza A virus of the genus Influenzavirus A). Strains of the virus subtypes have been transmitted to humans, sometimes causing outbreaks.

see swine flu

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