As of September 03, 2025, 1 more domestic cat has been infected with avian influenza H5N1, for a total of 145 (sorted by state): Detections of
Highly Pathogenic Avian Influenza in Mammals
Last Modified: September 03, 2025
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State County Date Collected Date Detected HPAI Strain Species
California San Francisco 7/13/2025 8/29/2025 EA/AM H5N1 Domestic cat
California Alameda 12/11/2024 6/16/2025 EA H5 Domestic cat
California Alameda 12/30/2024 4/4/2025 EA H5 Domestic cat
California Orange 1/16/2025 4/2/2025 EA H5N1 Domestic cat
California Orange 1/16/2025 4/2/2025 EA H5N1 Domestic cat
California Shasta 12/11/2024 3/14/2025 EA H5N1 Domestic cat
California Imperial 1/22/2025 2/20/2025 EA H5N1 Domestic cat
California San Mateo 1/29/2025 2/5/2025 EA/AM H5N1 Domestic cat
California Contra Costa 1/15/2025 1/24/2025 EA/AM H5N1 Domestic cat
California Los Angeles 1/8/2025 1/15/2025 EA H5N1 Domestic cat
California Los Angeles 1/8/2025 1/15/2025 EA H5N1 Domestic cat
California Los Angeles 12/14/2024 1/3/2025 EA/AM H5N1 Domestic cat
California Los Angeles 12/14/2024 1/3/2025 EA/AM H5N1 Domestic cat
California Los Angeles 12/11/2024 1/3/2025 EA/AM H5N1 Domestic cat
California Los Angeles 12/10/2024 1/3/2025 EA/AM H5N1 Domestic cat
California Los Angeles 12/10/2024 1/3/2025 EA/AM H5N1 Domestic cat
California Santa Barbara 12/17/2024 1/2/2025 EA/AM H5N1 Domestic cat
California Santa Barbara 12/12/2024 1/2/2025 EA/AM H5N1 Domestic cat
California Los Angeles 12/26/2024 12/31/2024 EA H5N1 Domestic cat
California Los Angeles 12/26/2024 12/31/2024 EA H5N1 Domestic cat
California Los Angeles 12/6/2024 12/27/2024 EA/AM H5N1 Domestic cat
California Los Angeles 12/10/2024 12/23/2024 EA H5N1 Domestic cat
California Fresno 12/9/2024 12/17/2024 EA H5N1 Domestic cat
California San Bernardino 12/4/2024 12/10/2024 EA H5N1 Domestic cat
California Tulare 11/22/2024 12/3/2024 EA H5N1 Domestic cat
Colorado Weld 4/4/2025 4/15/2025 EA H5 Domestic cat
Colorado Morgan 3/25/2025 3/31/2025 EA H5 Domestic cat
Colorado Jefferson 3/16/2025 3/21/2025 EA H5 Domestic cat
Colorado Jefferson 3/16/2025 3/21/2025 EA H5 Domestic cat
Colorado Garfield 2/11/2025 2/24/2025 EA H5 Domestic cat
Colorado Adams 1/31/2025 2/14/2025 EA/AM H5N1 Domestic cat
Colorado Douglas 1/26/2025 1/31/2025 EA H5N1 Domestic cat
Colorado Adams 12/10/2024 1/3/2025 EA/AM H5N1 Domestic cat
Colorado Kit Carson 12/11/2024 1/3/2025 EA/AM H5N1 Domestic cat
Colorado Larimer 7/24/2024 7/29/2024 EA H5N1 Domestic cat
Colorado Larimer 7/16/2024 7/22/2024 EA H5N1 Domestic cat
Colorado Larimer 7/14/2024 7/22/2024 EA H5N1 Domestic cat
Colorado Larimer 7/12/2024 7/22/2024 EA H5N1 Domestic cat
Colorado Adams 5/30/2024 6/24/2024 EA H5N1 Domestic cat
Colorado Morgan 5/25/2024 6/6/2024 EA H5N1 Domestic cat
Idaho Ada 4/15/2025 4/29/2025 EA H5 Domestic cat
Idaho Oneida 2/21/2025 3/4/2025 EA/AM H5N1 Domestic cat
Idaho Jerome 5/23/2024 6/3/2024 EA H5N1 Domestic cat
Illinois Bond 3/21/2025 3/25/2025 EA H5 Domestic cat
Iowa Cass 3/24/2025 3/26/2025 EA H5 Domestic cat
Iowa Hamilton 1/8/2025 1/13/2025 EA/AM H5N1 Domestic cat
Kansas Crawford 3/21/2025 3/27/2025 EA H5 Domestic cat
Kansas Reno 3/20/2025 3/21/2025 EA H5 Domestic cat
Kansas Pottawatomie 2/27/2025 3/7/2025 EA H5 Domestic cat
Kansas Rooks 2/7/2025 2/19/2025 EA H5 Domestic cat
Kansas Pottawatomie 1/9/2025 1/14/2025 EA/AM H5N1 Domestic cat
Louisiana Orleans 1/7/2025 1/14/2025 EA H5N1 Domestic cat
Michigan Ottawa 4/18/2024 7/5/2024 EA/AM H5N1 Domestic cat
Michigan Ionia 5/20/2024 6/4/2024 EA/AM H5N1 Domestic cat
Michigan Clinton 5/23/2024 6/3/2024 EA H5N1 Domestic cat
Michigan Clinton 5/17/2024 5/23/2024 EA H5N1 Domestic cat
Michigan Ottawa 4/19/2024 5/17/2024 EA/AM H5N1 Domestic cat
Michigan Ottawa 4/19/2024 5/17/2024 EA/AM H5N1 Domestic cat
Michigan Ionia 4/25/2024 5/2/2024 EA/AM H5N1 Domestic cat
Michigan Isabella 4/19/2024 4/24/2024 EA H5N1 Domestic cat
Minnesota Cottonwood 12/9/2024 1/2/2025 EA/AM H5N1 Domestic cat
Minnesota Morrison 12/6/2024 12/18/2024 EA H5N1 Domestic cat
Minnesota Sibley 6/10/2024 6/27/2024 EA H5 Domestic cat
Minnesota Sibley 6/10/2024 6/27/2024 EA H5N1 Domestic cat
Minnesota Kandiyohi 6/18/2024 6/21/2024 EA H5N1 Domestic cat
Montana Flathead 12/5/2023 2/10/2025 EA/AM H5N1 Domestic cat
Montana Yellowstone 3/19/2024 4/26/2024 EA/AM H5N1 Domestic cat
Montana Sanders 11/12/2022 2/12/2024 EA H5N1 Domestic cat
Montana Treasure 2/9/2023 2/12/2024 EA H5N1 Domestic cat
Montana Yellowstone 4/8/2023 2/12/2024 EA/AM H5N1 Domestic cat
Montana Missoula 11/22/2023 11/28/2023 EA/AM H5N1 Domestic cat
Nebraska Buffalo 3/30/2023 4/3/2023 EA/AM H5N1 Domestic cat
Nebraska Madison 1/21/2023 1/27/2023 EA H5N1 Domestic cat
Nebraska Madison 1/10/2023 1/13/2023 EA H5N1 Domestic cat
New Jersey Mercer 6/30/2025 7/3/2025 EA H5 Domestic cat
New Jersey Hunterdon 2/26/2025 3/4/2025 EA H5 Domestic cat
New Jersey Hunterdon 2/26/2025 3/4/2025 EA/AM H5N1 Domestic cat
New Jersey Hunterdon 2/26/2025 3/4/2025 EA/AM H5N1 Domestic cat
New Jersey Hunterdon 2/26/2025 3/4/2025 EA/AM H5N1 Domestic cat
New Jersey Hunterdon 2/24/2025 2/27/2025 EA H5 Domestic cat
New Jersey Hunterdon 2/21/2025 2/25/2025 EA H5 Domestic cat
New Mexico Curry 2/11/2025 2/18/2025 EA H5 Domestic cat
New Mexico Curry 4/17/2024 5/17/2024 EA/AM H5N1 Domestic cat
New Mexico Curry 4/17/2024 5/17/2024 EA/AM H5N1 Domestic cat
New Mexico Curry 4/9/2024 4/15/2024 EA H5N1 Domestic cat
New Mexico Curry 4/9/2024 4/15/2024 EA H5N1 Domestic cat
New Mexico Curry 3/19/2024 4/15/2024 EA H5N1 Domestic cat
New Mexico Curry 3/20/2024 4/1/2024 EA/AM H5N1 Domestic cat
New Mexico Curry 3/20/2024 4/1/2024 EA/AM H5N1 Domestic cat
New York Kings 3/6/2025 3/13/2025 EA H5N1 Domestic cat
New York Kings 2/24/2025 3/11/2025 EA H5N1 Domestic cat
Ohio Franklin 2/14/2025 3/31/2025 EA H5 Domestic cat
Ohio Franklin 2/14/2025 3/31/2025 EA H5 Domestic cat
Ohio Wood 4/9/2024 4/15/2024 EA H5N1 Domestic cat
Oklahoma Woodward 3/15/2025 3/18/2025 EA H5 Domestic cat
Oklahoma Harmon 3/20/2024 4/17/2024 EA/AM H5N1 Domestic cat
Oregon Multnomah 7/1/2025 7/8/2025 EA H5N1 Domestic cat
Oregon Clackamas 2/19/2025 2/27/2025 EA H5N1 Domestic cat
Oregon Clackamas 2/18/2025 2/27/2025 EA H5N1 Domestic cat
Oregon Clackamas 2/14/2025 2/21/2025 EA H5N1 Domestic cat
Oregon Clackamas 2/14/2025 2/21/2025 EA H5N1 Domestic cat
Oregon Clackamas 2/14/2025 2/21/2025 EA H5N1 Domestic cat
Oregon Clackamas 2/12/2025 2/18/2025 EA H5N1 Domestic cat
Oregon Clackamas 2/12/2025 2/18/2025 EA H5N1 Domestic cat
Oregon Clackamas 2/12/2025 2/18/2025 EA H5N1 Domestic cat
Oregon Multnomah 2/5/2025 2/11/2025 EA H5N1 Domestic cat
Oregon Multnomah 2/5/2025 2/11/2025 EA/AM H5N1 Domestic cat
Oregon Multnomah 2/3/2025 2/10/2025 EA H5N1 Domestic cat
Oregon Washington 1/9/2025 1/17/2025 EA/AM H5N1 Domestic cat
Oregon Washington 12/4/2024 12/19/2024 EA H5N1 Domestic cat
Oregon Linn 12/27/2022 1/3/2023 EA/AM H5N1 Domestic cat
Oregon Linn 12/19/2022 12/23/2022 EA/AM H5N1 Domestic cat
Pennsylvania Berks 3/19/2025 3/26/2025 EA H5 Domestic cat
South Dakota Aurora 5/6/2025 5/15/2025 EA/AM H5N1 Domestic cat
South Dakota Gregory 1/27/2025 2/4/2025 EA/AM H5N1 Domestic cat
South Dakota Faulk 1/16/2025 1/23/2025 EA/AM H5N1 Domestic cat
South Dakota Faulk 1/16/2025 1/23/2025 EA/AM H5N1 Domestic cat
South Dakota Lake 12/30/2024 1/13/2025 EA/AM H5N1 Domestic cat
South Dakota Brookings 12/26/2024 12/31/2024 EA/AM H5N1 Domestic cat
South Dakota Campbell 4/19/2024 4/30/2024 EA/AM H5N1 Domestic cat
South Dakota Campbell 4/19/2024 4/30/2024 EA/AM H5N1 Domestic cat
South Dakota Jerauld 10/7/2023 11/14/2023 EA H5N1 Domestic cat
South Dakota Jerauld 10/7/2023 11/14/2023 EA H5N1 Domestic cat
South Dakota Jerauld 10/7/2023 11/14/2023 EA H5N1 Domestic cat
South Dakota Jerauld 10/7/2023 11/14/2023 EA H5N1 Domestic cat
South Dakota Jerauld 10/7/2023 11/14/2023 EA H5N1 Domestic cat
South Dakota Jerauld 10/7/2023 11/14/2023 EA H5N1 Domestic cat
Texas Ochiltree 3/15/2025 8/1/2025 EA/AM H5N1 Domestic cat
Texas Bexar 3/6/2025 8/1/2025 EA/AM H5N1 Domestic cat
Texas Potter 3/10/2025 3/21/2025 EA/AM H5N1 Domestic cat
Texas Potter 3/10/2025 3/21/2025 EA/AM H5N1 Domestic cat
Texas Potter 3/10/2025 3/21/2025 EA/AM H5N1 Domestic cat
Texas Potter 3/10/2025 3/21/2025 EA/AM H5N1 Domestic cat
Texas Hartley 3/19/2024 5/7/2024 EA/AM H5N1 Domestic cat
Texas Hartley 3/19/2024 5/7/2024 EA/AM H5N1 Domestic cat
Texas Hartley 3/19/2024 5/7/2024 EA/AM H5N1 Domestic cat
Texas Hale 3/22/2024 3/25/2024 EA/AM H5N1 Domestic cat
Texas Hale 3/22/2024 3/25/2024 EA/AM H5N1 Domestic cat
Texas Hartley 3/20/2024 3/25/2024 EA/AM H5N1 Domestic cat
Texas Hartley 3/20/2024 3/25/2024 EA/AM H5N1 Domestic cat
Utah Cache 10/30/2024 12/13/2024 EA/AM H5N1 Domestic cat
Washington King 2/22/2025 2/28/2025 EA H5N1 Domestic cat
Washington King 2/19/2025 2/25/2025 EA H5N1 Domestic cat
Washington Snohomish 2/18/2025 2/25/2025 EA H5N1 Domestic cat
Wyoming Hot Springs 3/22/2023 3/30/2023 EA/AM H5N1 Domestic cat
https://www.aphis.usda.gov/livestock-poultry-disease/avian/avian-influenza/hpai-detections/mammals