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Breeding

Iowa’s First Bird Flu Case of 2025 Was Found in a Clinton County Backyard Flock

IDALS and USDA APHIS confirmed H5N1 HPAI in a multi-species backyard flock in Clinton County on January 7, 2025— Iowas first domestic-bird detection of the year.

By Animalso Team 3 min read
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Iowa’s first confirmed domestic-bird detection of 2025 was H5N1 highly pathogenic avian influenza (HPAI) in a multi-species backyard flock in Clinton County. The Iowa Department of Agriculture and Land Stewardship (IDALS) and the U.S. Department of Agriculture’s Animal and Plant Health Inspection Service (USDA APHIS) reported the detection on January 7, 2025, after Iowa cases began appearing in December 2024.

What happened in Clinton County?

Testing identified H5N1 HPAI in a backyard flock containing more than one bird species. This was Iowa’s first reported domestic-bird H5N1 detection of 2025. The January 7 announcement did not establish a flock-size figure or provide a detailed species-by-species count.

The detection followed commercial and backyard flock reports in Iowa during December 2024. It was an animal-health finding, not a report of human infection in Clinton County.

Key dates in Iowa’s H5N1 response

Date Event What it means
December 20, 2024 Iowa Health and Human Services announced Iowa’s first human H5 avian-influenza case. The agency said the risk to the public was very low at that time.
January 2, 2025 Gov. Kim Reynolds extended an HPAI disaster proclamation for O’Brien, Palo Alto, Sac, Sioux and Worth counties. The proclamation supported tracking, monitoring, rapid detection, containment, disposal and disinfection in counties with confirmed HPAI.
January 7, 2025 IDALS and USDA APHIS reported H5N1 HPAI in a multi-species backyard flock in Clinton County. This was Iowa’s first 2025 domestic-bird detection.

Why H5N1 is serious for birds

H5N1 HPAI is a viral disease affecting wild and domestic birds. Wild birds can carry and spread the virus without looking ill. In domestic poultry, including chickens and turkeys, infection is often fatal.

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Backyard flocks can be exposed when birds, feed, equipment, clothing or vehicles come into contact with contaminated wild-bird droppings or other material. A mixed-species flock does not create the virus, but keeping species together can make an exposure harder to identify and manage once infection occurs.

What was the human-health risk?

Contemporaneous Iowa reporting characterized the general public-health risk as low. Reported human infections were associated with direct contact with infected dairy cattle, commercial poultry, backyard birds or wild birds—not casual contact with people who had no such exposure.

People who work with or handle potentially infected animals should follow public-health instructions, avoid unprotected contact and report symptoms promptly. Iowa HHS provides clinical guidance for evaluating exposed patients and considering post-exposure prophylaxis.

The December 20, 2024 Iowa HHS announcement counted 64 confirmed U.S. human H5 HPAI cases across nine states as of that date. That was a historical figure, not a current total.

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Are eggs, poultry and milk safe to eat?

The January 7 report said poultry, eggs and dairy products remained safe for consumption. Consumers should continue to handle poultry and eggs safely, cook them thoroughly and use pasteurized dairy products. Do not eat products from sick or dead animals, or food that public-health or animal-health officials have told you to discard.

What Iowa poultry owners should do

Watch for illness

  • Look for sudden deaths, sharply reduced egg production, respiratory signs, diarrhea, loss of appetite, weakness, nervous-system changes or unusual flock behavior.
  • Remember that wild birds may carry H5N1 without visible illness, so an apparently healthy wild bird is not proof that an area is virus-free.

Reduce exposure

  • Keep domestic birds away from wild birds and areas contaminated by wild-bird droppings.
  • Do not share crates, footwear, clothing, tools or vehicles between flocks unless they have been cleaned and disinfected.
  • Limit visitors and keep a record of movements, new birds and unusual illness or deaths.

Report a suspected case

Contact IDALS or USDA APHIS promptly if birds show signs consistent with HPAI or if there are unexplained deaths. Officials may direct testing, movement restrictions, containment, disposal and disinfection. Do not move potentially exposed birds or equipment while waiting for instructions.

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How Iowa responds after a detection

Iowa’s response system combines monitoring and rapid detection with containment, disposal and disinfection. State and federal animal-health officials determine the appropriate actions for the affected flock and any associated premises. The January 2 disaster proclamation was intended to support those operations in counties with confirmed HPAI.

The response to one flock does not by itself establish that every backyard flock in Clinton County—or every Iowa flock—is infected. Risk depends on exposure, local detections and official movement or control measures.

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What this case does—and does not—show

  • Established: H5N1 HPAI was confirmed in a multi-species backyard flock in Clinton County and reported January 7, 2025.
  • Not established in the announcement: the flock’s exact size, the number of birds that tested positive, the precise exposure route and any countywide infection rate.
  • Public-health context: officials described general public risk as low while emphasizing direct contact with infected animals as the relevant exposure pathway.

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