avian influenza

noun

: highly variable influenza A of birds caused by any of the subtypes of the causative orthomyxovirus of which some strains have been or may be transmitted to other vertebrates including humans especially after undergoing mutation

called also avian flu

compare bird flu

Examples of avian influenza in a Sentence

Recent Examples on the Web

The testing began last week, on December 23, as part of an ongoing investigation into an outbreak of avian influenza A (H5N1)—more commonly known as bird flu—with the U.S. Department of Agriculture (USDA), the Centers for Disease Control and Prevention (CDC) and state authorities. —George Monastiriakos, Newsweek, 31 Dec. 2024

Historically, human cases of highly pathogenic avian influenza H5N1 have often been traced back to live bird markets. —Will Stone, NPR, 30 Dec. 2024

What Is Bird Flu? Also known as avian influenza, bird flu belongs to a group of influenza viruses known as H5. —Katherine Hignett, Forbes, 28 Dec. 2024

The company's website said the batch, which was sold across the United States, tested positive for highly pathogenic avian influenza (HPAI), more commonly known as bird flu. —Doha Madani, NBC News, 25 Dec. 2024

Word History

First Known Use

1965, in the meaning defined above

Medical Definition

avian influenza

noun

variants or avian flu

: influenza of birds that is caused by any of several subtypes (such as H5N2 or H7N7) of an orthomyxovirus (species Influenza A virus of the genus Influenzavirus A) of which some strains have been transmitted to other vertebrates including humans especially after undergoing mutation

Most cases of avian influenza infection in humans have resulted from contact with infected poultry (e.g., domesticated chicken, ducks, and turkeys) or surfaces contaminated with secretion/excretions from infected birds.

—The Tennessee Tribune (Nashville)

And as you read this, millions of birds are being eliminated in Asia and elsewhere in an effort to contain avian flu.

—Barry Gewen, The New York Times Book Review

called also fowl pest, fowl plague

see bird flu