There is no effective cure for H5N1 in cats.
In the quiet routines of domestic life, a San Francisco cat's illness and death this summer revealed how far a dangerous pathogen has traveled — from wild birds to livestock to the commercial pet food supply. H5N1 avian influenza, confirmed in the animal and genetically matched to two specific lots of raw cat food, has now claimed nearly 70 feline lives this year alone, most traced to raw diets or unpasteurized milk. Health authorities are asking pet owners to reconsider what they place in the food bowl, recognizing that the boundary between the agricultural crisis and the household has quietly dissolved.
- A San Francisco cat deteriorated rapidly in July — seizures, respiratory failure, neurological collapse — before being euthanized, with H5N1 confirmed as the cause.
- Genetic sequencing proved the virus in the cat's body was identical to the strain found in two specific lots of RAWR Raw Cat Food, making this the first confirmed raw-food transmission case since March.
- Nearly 70 domestic cats have been infected with H5N1 this year, signaling that what once seemed like an agricultural outbreak has quietly entered the pet food supply chain.
- The virus moves fast — cats can go from exposure to fatal deterioration within days, and there is no cure, only a narrow window for supportive care.
- Health officials are urging pet owners to discard the affected lots, abandon raw diets entirely, keep cats indoors, and seek immediate veterinary care at the first sign of lethargy, discharge, tremors, or breathing difficulty.
In July, a San Francisco cat began showing severe respiratory and neurological symptoms — and did not survive. Lab work confirmed H5N1 avian influenza, and investigators traced the source to the cat's commercial raw food diet. Federal and local authorities used genetic sequencing to match the virus in the cat's body to two specific lots of RAWR Raw Cat Food Chicken Eats — batches CCS 25 093 and CCS 25 077, with sell-by dates reaching into 2026. The strain identified was B3.13 H5N1, the same genotype circulating in U.S. dairy cattle and poultry outbreaks. It was the first confirmed raw-food transmission case since March, but far from an isolated event.
Nearly 70 domestic cats have contracted H5N1 this year, most linked to raw food or unpasteurized milk. The virus is particularly brutal in cats — attacking both the respiratory and nervous systems, triggering seizures, tremors, and acute breathing difficulty, often proving fatal within days. Raw meat and organs can harbor the virus and establish infection quickly in animals with no immunity.
Health officials have issued clear guidance: stop feeding raw diets. Cooked or commercially heat-processed foods are safer. Keep cats indoors, practice careful hygiene around pet food and livestock, and do not use the recalled lots even if already thawed. Symptoms — lethargy, fever, discharge, coughing, tremors, loss of coordination — demand immediate veterinary attention. There is no cure; early intervention is the only recourse, and the window is short. The death of one cat in San Francisco is a concrete reminder that this outbreak has reached the food bowl.
In July, a cat in San Francisco began showing signs of severe illness—respiratory distress, neurological problems—that would ultimately prove fatal. Lab work revealed the cause: H5N1 bird flu, the highly pathogenic avian influenza that has been spreading through livestock and poultry across the United States. The source, investigators determined, was the cat's food. Specifically, RAWR Raw Cat Food Chicken Eats, a commercial raw diet product. The cat was euthanized.
Federal and local health authorities moved quickly to confirm what seemed almost unthinkable: the identical virus strain found in the cat's body matched the virus in two specific lots of the pet food—batches numbered CCS 25 093 and CCS 25 077, with sell-by dates extending into 2026. Genetic sequencing by the USDA identified the virus as B3.13 H5N1, the same genotype that has been documented in outbreaks among U.S. dairy cattle and poultry. This was the first confirmed case of H5N1 transmission from raw pet food to a cat since March. It was not, however, an anomaly. Nearly 70 domestic cats have been infected with H5N1 this year alone, most of them traced back to contaminated raw food or unpasteurized milk.
The danger posed by H5N1 to cats is severe and swift. The virus attacks both the respiratory and nervous systems, triggering seizures, tremors, and acute breathing difficulty. Cats infected often deteriorate rapidly, sometimes fatally, within days. Raw food diets appear to amplify this risk significantly. The virus can survive in raw meat and organs, and when consumed, it establishes infection quickly in an animal with no immunity.
For pet owners, the warning from health officials is unambiguous: avoid raw diets entirely. Thoroughly cooked meals or commercially prepared foods that have undergone high-temperature processing are safer alternatives. Keeping cats indoors reduces exposure to wildlife and contaminated environments. Basic hygiene matters too—washing hands after handling pet food, changing clothes after contact with livestock or wild birds, treating raw meat with care. If you have purchased the affected lots, do not feed them to your pets, even if thawed.
The symptoms to watch for are unmistakable: lethargy, loss of appetite, fever, nasal or eye discharge, inflamed eyes, coughing, difficulty breathing, tremors, seizures, or uncoordinated movement. Any of these warrant immediate veterinary attention. There is no effective cure for H5N1 in cats. Early detection and supportive care offer the only chance, and that window closes quickly. The San Francisco cat's death serves as a stark reminder that the threat is not theoretical. It is in the food bowl.
Notable Quotes
Experts strongly advise against feeding pets raw meat or unpasteurized products, recommending thoroughly cooked meals or reputable commercial diets that have undergone high-temperature processing instead.— Health authorities and FDA
The Hearth Conversation Another angle on the story
Why would raw pet food be more dangerous than cooked food when it comes to bird flu?
Raw meat and organs can harbor the live virus. When a cat eats it, the virus enters directly into the digestive and respiratory tract without the heat treatment that would kill it. Cooked food destroys the pathogen before it reaches the animal.
How did bird flu end up in pet food in the first place?
The food is made from animal products—chicken, in this case—sourced from environments where the virus is circulating. If the raw materials come from infected birds or contaminated processing, the virus travels into the finished product.
Is this a recall situation, or is the manufacturer handling it quietly?
No official recall has been issued. The manufacturer claims it removed the affected batches weeks ago, but the FDA has issued warnings. The lack of a formal recall is notable given that the virus was confirmed in the food.
What's the risk to humans who handle this food?
Human risk remains low. The virus is adapted to birds and mammals, not humans. But someone handling raw pet food should still practice careful hygiene—wash hands, avoid cross-contamination with human food, be cautious around livestock.
If nearly 70 cats have been infected this year, why isn't this bigger news?
It is news, but it's a niche threat—it affects pet owners who feed raw diets, a smaller subset of the population. The human angle is missing, which makes it easier to overlook. But for anyone feeding their cat raw food, it's urgent.
What should someone do if they already bought this product?
Stop feeding it immediately. Check the lot numbers. If you have CCS 25 093 or CCS 25 077, discard it. If your cat shows any of the symptoms—lethargy, respiratory distress, neurological signs—get to a vet within hours, not days.