01/14/2025
Bird Flu Update
More cats and raw diets involved. Currently we encourage no one feed raw diets. Lightly cook to 165 degrees for safety. What follows is the official LA Public Health report:
“Animal Health Alert: H5 Bird Flu confirmed in three additional domestic cats in Los Angeles County and in one commercially available raw pet food product.
Key Points:
Five indoor-only cats in one household experienced acute onset of illness after consuming two brands of commercially available raw pet food. Four of the cats had severe clinical signs and two of them died. One cat had mild clinical signs. One of the severely affected cats was tested and later confirmed to be infected with H5N1 (aka H5 bird flu). Both raw pet food diets were tested, and one of the two raw pet foods, Monarch Raw Pet Food, was confirmed to contain live, infective, H5N1 virus.
In a second single-cat household, the indoor-only cat had acute onset of illness after consuming three different brands of commercially available raw pet food. This cat was tested and confirmed to be infected with H5 bird flu. The investigation is ongoing and testing of the raw pet food by the US Food and Drug Administration (FDA) is currently underway.
Influenza A is rarely detected in cats. These are the first cats in LA County to be confirmed positive for H5 bird flu after consuming raw pet food products.
Five other cats from two different households in LA County have also been confirmed with H5 bird flu after drinking raw milk for human consumption that was part of a recall due to H5 bird flu contamination. All five of these cats died from H5 bird flu.
H5 bird flu is a One Health issue that significantly affects human health, animal health and the environment. Veterinarians should strongly advise pet owners to not consume nor feed raw dairy, raw meat, raw poultry, and raw pet food diets to pets.
REPORT suspected cases of H5 bird flu in cats and other animals. See the Guidance for Veterinary Practices with Suspect H5 Bird Flu Cases in Pets. Influenza A testing is available through commercial diagnostic laboratories. Testing through Public Health may be available for certain cases. Take a complete dietary history (including any raw dairy, raw poultry and/or meat including raw pet food diets, and wild bird exposure).
Dear Veterinary Colleagues:
In Los Angeles County, there have now been 7 laboratory confirmed cases of H5 bird flu in cats. Five cats with confirmed H5 bird flu consumed raw milk that was part of a recall due to H5 bird flu contamination. Two cats with confirmed H5 bird flu consumed commercially available raw pet food products. There have been multiple H5 bird flu probable and suspected cases in cats that either consumed raw pet food or raw milk and became acutely ill, but not all cats were able to be tested.
As part of the epidemiologic investigation and when available from the owners, the pet foods fed to the suspected and confirmed cases of H5 bird flu are being tested through federal partners. One commercially available raw pet food, Monarch Raw Pet food, tested positive for H5 bird flu, with live infective virus isolated from the samples. The product is sold at several farmers markets in southern California, and do not have lot numbers, nor Best Before dates. Testing is still pending on several additional commercially available raw pet foods that were consumed by cats that became acutely ill and then tested positive for H5 bird flu.