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US H5N1 Avian Flu in Domestic Cats List

Pathfinder

Editor, Senior Moderator
Domestic cats: 53 entries

Detections of Highly Pathogenic Avian Influenza in Mammals
...
state county date_collected date_detected hpai_strain species


Colorado Larimer 7/24/2024 7/29/2024 EA H5N1 Domestic cat
Colorado Larimer 7/12/2024 7/22/2024 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 Adams 5/30/2024 6/24/2024 EA H5N1 Domestic cat
Colorado Morgan 5/25/2024 6/6/2024 EA H5N1 Domestic cat

Idaho Jerome 5/23/2024 6/3/2024 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 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 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 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 3/19/2024 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

Ohio Wood 4/9/2024 4/15/2024 EA H5N1 Domestic cat

Oklahoma Harmon 3/20/2024 4/17/2024 EA/AM 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

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 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

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
 
USDA Adds 16 Additional Cats To Mammals with HPAI H5N1 List (n=53)

USDA Adds 16 Additional Cats To Mammals with HPAI H5N1 List (n=53)



AVvXsEghRcTQcx0w9UIpeGEe_Ztz8VC0mhXA8uU_gRagQ3e4wIUG_z4g4nZ2GGbIux5ks5ES6kuLqsnKjUjTn8Fuh9t5EsB5ysuPXbsJQozByKL5f3uFJGLVKCpojn8B_Gwx4TQpxhRF7H_uVTT5NoJ9_igutNhU5vLkjtvD1W2PK6VlYIaZhZKDz8m7Pw=w400-h243

#18,278



Until just over 3 months ago the USDA wasn't including infected cats on their wildlife with H5N1 list, despite the fact that we'd seen scattered reports across the nation (see here & here), and larger outbreaks in countries like Poland & South Korea.

That changed following the unexpected detection of HPAI H5 in dairy cattle, and reports of farm cats falling ill with the virus. On May 30th the USDA added 16 cats to the list, going back to March.​

Ten days ago, in CAHSS/Animal Health Canada: HPAI H5N1 in Cats, we looked at the latest tally of cats included in the USDA's list (n=37). Yesterday afternoon the USDA added an additional 16 cats, bringing the total to 53.



All of these recent additions predate the bovine H5N1 era, with collection dates primarily from 2023, but with several going back to the fall and winter of 2022 (see list below).






We were aware of a few of these cases (see Nebraska Veterinary Diagnostic Center (NVDC) Report: 2 Domestic Cats Infected With HPAI H5N1), but as of February 16th of this year, only 7 H5N1 infected cats had beenreported to WOAH by the United States.

A quick check of the most recent WAHIS update (Aug 30th)only shows that number has only grown to 17.

I've no idea why less than 1/3rd of the listed cats have been reported to WOAH, or why it has taken - in some instances - nearly 2 years for some of these older cases to be revealed.

But it is not a good look.

Particularly since the list we have is almost certainly incomplete. Only 32 states have reported HPAI in mammals of any type, which suggests some states aren't looking as hard as others for cases.

Even in states that are actively looking, mammals - including domestic cats - often die in remote and difficult to access places where their carcasses are quickly scavenged by other animals, meaning most never discovered or tested.

And of course, some of these animals are likely to survive the infection, and are never tested.​

Three weeks ago the state of Colorado released some details on 6 feline infections, of which only one was connected to a dairy barn.

  • Two of the 6 were indoor only cats, with no known exposures to the virus
  • Three of the 6 were indoor/outdoor cats, which may have hunted mice and/or small birds
  • Five of the 6 presented with respiratory symptoms and neurological impairment
The CVMA cautioned that `HPAI H5N1 infection should be considered in domestic felines even if all of the risk factors or clinical signs are not present', and that there is a `high abundance' of the virus in the environment right now.

The CDC offers the following Advice for Pet Owners:

How to prevent spread

As a general precaution, people should avoid direct contact with wild birds and observe wild birds only from a distance, whenever possible. People should also avoid contact between their pets (e.g., pet birds, dogs and cats) with wild birds. Don't touch sick or dead birds, their feces or litter, or any surface or water source (e.g., ponds, waterers, buckets, pans, troughs) that might be contaminated with their saliva, feces, or any other bodily fluids without wearing personal protective equipment (PPE).

More information about specific precautions to take for preventing the spread of bird flu viruses between animals and people is available at
Prevention and Antiviral Treatment of Bird Flu Viruses in People. Additional information about the appropriate PPE to wear is available at Backyard Flock Owners: Take Steps to Protect Yourself from Avian Influenza.

(Continue . . . )


While the risk of exposure to HPAI H5N1 from a companion animal is considered low, risk assessments are based the available evidence.

Pertinent data that is withheld, or slow-rolled, can only help to undermine that process.



https://afludiary.blogspot.com/2024/09/usda-adds-16-additional-cats-to-mammals.html
 
Tracking H5N1 in domestic cats is very important because of their relationship with humans. The deaths of barn cats (domestic breed) from H5N1 is what alerted to the problem in dairy cows.
 
APHIS reports that 57 domestic cats have been infected with H5N1 as of December 23, 2024.

Detections of Highly Pathogenic Avian Influenza in Mammals

Last Modified: December 23, 2024
...
state county date_collected date_detected hpai_strain species

California Fresno 12/9/2024 12/17/2024 EA H5N1 Domestic cat

...

https://www.aphis.usda.gov/livestock-poultry-disease/avian/avian-influenza/hpai-detections/mammals
-----------------------------------------

See also:

California: Santa Barbara County Reports Cats In Two Households with HPAI H5

https://flutrackers.com/forum/forum...y-reports-cats-in-two-households-with-hpai-h5
 
As of January 6, 2025, 62 domestic cats have been infected with avian influenza H5N1 (sorted by state):

State County Date Collected Date Detected HPAI Strain Species

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 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 Larimer 7/24/2024 7/29/2024 EA H5N1 Domestic cat
Colorado Larimer 7/12/2024 7/22/2024 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 Adams 5/30/2024 6/24/2024 EA H5N1 Domestic cat
Colorado Morgan 5/25/2024 6/6/2024 EA H5N1 Domestic cat

Idaho Jerome 5/23/2024 6/3/2024 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 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 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 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 3/19/2024 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

Ohio Wood 4/9/2024 4/15/2024 EA H5N1 Domestic cat

Oklahoma Harmon 3/20/2024 4/17/2024 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

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 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

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
 
As of January 13, 2025, 74 domestic cats have been infected with avian influenza H5N1 (sorted by state):

State County Date Collected Date Detected HPAI Strain Species

California Tulare 11/22/2024 12/3/2024 EA H5N1 Domestic cat
California Santa Barbara 12/12/2024 1/2/2025 EA/AM H5N1 Domestic cat
California Santa Barbara 12/17/2024 1/2/2025 EA/AM H5N1 Domestic cat
California San Bernardino 12/4/2024 12/10/2024 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 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 Los Angeles 12/11/2024 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 12/14/2024 1/3/2025 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 Fresno 12/9/2024 12/17/2024 EA H5N1 Domestic cat

Colorado Morgan 5/25/2024 6/6/2024 EA H5N1 Domestic cat
Colorado Larimer 7/12/2024 7/22/2024 EA H5N1 Domestic cat
Colorado Larimer 7/14/2024 7/22/2024 EA H5N1 Domestic cat
Colorado Larimer 7/16/2024 7/22/2024 EA H5N1 Domestic cat
Colorado Larimer 7/24/2024 7/29/2024 EA H5N1 Domestic cat
Colorado Kit Carson 12/11/2024 1/3/2025 EA/AM H5N1 Domestic cat
Colorado Arapahoe 12/10/2024 1/3/2025 EA/AM H5N1 Domestic cat
Colorado Adams 5/30/2024 6/24/2024 EA H5N1 Domestic cat

Idaho Jerome 5/23/2024 6/3/2024 EA H5N1 Domestic cat

Michigan Ottawa 4/18/2024 7/5/2024 EA/AM 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 Isabella 4/19/2024 4/24/2024 EA H5N1 Domestic cat
Michigan Ionia 4/25/2024 5/2/2024 EA/AM H5N1 Domestic cat
Michigan Ionia 5/20/2024 6/4/2024 EA/AM H5N1 Domestic cat
Michigan Clinton 5/17/2024 5/23/2024 EA H5N1 Domestic cat
Michigan Clinton 5/23/2024 6/3/2024 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 Morrison 12/6/2024 12/18/2024 EA H5N1 Domestic cat
Minnesota Kandiyohi 6/18/2024 6/21/2024 EA H5N1 Domestic cat
Minnesota Cottonwood 12/9/2024 1/2/2025 EA/AM H5N1 Domestic cat

Montana Yellowstone 4/8/2023 2/12/2024 EA/AM H5N1 Domestic cat
Montana Yellowstone 3/19/2024 4/26/2024 EA/AM H5N1 Domestic cat
Montana Treasure 2/9/2023 2/12/2024 EA H5N1 Domestic cat
Montana Sanders 11/12/2022 2/12/2024 EA H5N1 Domestic cat
Montana Missoula 11/22/2023 11/28/2023 EA/AM H5N1 Domestic cat

Nebraska Madison 1/10/2023 1/13/2023 EA H5N1 Domestic cat
Nebraska Madison 1/21/2023 1/27/2023 EA H5N1 Domestic cat
Nebraska Buffalo 3/30/2023 4/3/2023 EA/AM H5N1 Domestic cat

New Mexico Curry 3/19/2024 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 Mexico Curry 4/9/2024 4/15/2024 EA H5N1 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

Ohio Wood 4/9/2024 4/15/2024 EA H5N1 Domestic cat

Oklahoma Harmon 3/20/2024 4/17/2024 EA/AM H5N1 Domestic cat

Oregon Washington 12/4/2024 12/19/2024 EA H5N1 Domestic cat
Oregon Linn 12/19/2022 12/23/2022 EA/AM H5N1 Domestic cat
Oregon Linn 12/27/2022 1/3/2023 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
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 Brookings 12/26/2024 12/31/2024 EA H5 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 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
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

Utah Cache 10/30/2024 12/13/2024 EA/AM 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
 
​As of January 21, 2025, 6 more domestic cats have been infected with avian influenza H5N1, resulting in a total of 80 (sorted by state):

State County Date Collected Date Detected HPAI Strain Species

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 12/10/2024 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 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 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 7/12/2024 7/22/2024 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 Adams 5/30/2024 6/24/2024 EA H5N1 Domestic cat
Colorado Morgan 5/25/2024 6/6/2024 EA H5N1 Domestic cat

Idaho Jerome 5/23/2024 6/3/2024 EA H5N1 Domestic cat

Iowa Hamilton 1/8/2025 1/13/2025 EA H5 Domestic cat

Kansas Pottawatomie 1/9/2025 1/14/2025 EA H5 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 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 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 3/19/2024 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

Ohio Wood 4/9/2024 4/15/2024 EA H5N1 Domestic cat

Oklahoma Harmon 3/20/2024 4/17/2024 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

South Dakota Lake 12/30/2024 1/13/2025 EA H5 Domestic cat
South Dakota Brookings 12/26/2024 12/31/2024 EA H5 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 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

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
 
​As of January 28, 2025, 4 more domestic cats have been infected with avian influenza H5N1, resulting in a total of 84 (sorted by state):

State County Date Collected Date Detected HPAI Strain Species

California Contra Costa 1/15/2025 1/24/2025 EA H5 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 12/10/2024 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 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 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 7/12/2024 7/22/2024 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 Adams 5/30/2024 6/24/2024 EA H5N1 Domestic cat
Colorado Morgan 5/25/2024 6/6/2024 EA H5N1 Domestic cat

Idaho Jerome 5/23/2024 6/3/2024 EA H5N1 Domestic cat

Iowa Hamilton 1/8/2025 1/13/2025 EA H5 Domestic cat

Kansas Pottawatomie 1/9/2025 1/14/2025 EA H5 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 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 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 3/19/2024 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

Ohio Wood 4/9/2024 4/15/2024 EA H5N1 Domestic cat

Oklahoma Harmon 3/20/2024 4/17/2024 EA/AM H5N1 Domestic cat

Oregon Washington 1/9/2025 1/17/2025 EA H5 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

South Dakota Faulk 1/16/2025 1/23/2025 EA H5 Domestic cat
South Dakota Faulk 1/16/2025 1/23/2025 EA H5 Domestic cat

South Dakota Lake 12/30/2024 1/13/2025 EA H5 Domestic cat
South Dakota Brookings 12/26/2024 12/31/2024 EA H5 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 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

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
 
​As of February 11, 2025, 3 more domestic cats have been infected with avian influenza H5N1, resulting in a total of 88 (sorted by state):

State County Date Collected Date Detected HPAI Strain Species

California San Mateo 1/29/2025 2/5/2025 EA H5 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 12/10/2024 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 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 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 7/12/2024 7/22/2024 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 Adams 5/30/2024 6/24/2024 EA H5N1 Domestic cat
Colorado Morgan 5/25/2024 6/6/2024 EA H5N1 Domestic cat

Idaho Jerome 5/23/2024 6/3/2024 EA H5N1 Domestic cat

Iowa Hamilton 1/8/2025 1/13/2025 EA H5 Domestic cat

Kansas Pottawatomie 1/9/2025 1/14/2025 EA H5 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 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 3/19/2024 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

Ohio Wood 4/9/2024 4/15/2024 EA H5N1 Domestic cat

Oklahoma Harmon 3/20/2024 4/17/2024 EA/AM H5N1 Domestic cat

Oregon Multnomah 2/3/2025 2/10/2025 EA 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

South Dakota Lake 12/30/2024 1/13/2025 EA H5 Domestic cat
South Dakota Brookings 12/26/2024 12/31/2024 EA H5 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 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

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
 
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