Cases of H5N1 influenza in domestic cats linked to raw food

 The recent detection of H5N1 avian influenza in pet food in the United States has raised serious concerns among pet owners, veterinarians, and public health officials. The incident highlights the potential risks associated with raw pet food diets and underscores the importance of strict safety measures in pet food manufacturing.

Bird Flu in Pet Food

In December 2024, Northwest Naturals, a pet food company based in Portland, Oregon, announced a nationwide recall of its 2-pound Feline Turkey Recipe raw frozen pet food. This action was taken following the death of a domestic cat in Oregon who had consumed the product and subsequently tested positive for the highly pathogenic avian influenza (HPAI) H5N1 virus. Laboratory tests conducted by the USDA and Oregon State University confirmed the presence of H5N1 in both the cats and the pet food, establishing a direct link between the product and the infection.

Following this incident, Wild Coast Raw, another pet food manufacturer, recalled its boneless, skinless chicken formula after cats in Oregon and Washington contracted H5N1. Despite the recall, additional cases have emerged, indicating that the contaminated products have already reached consumers.

Understanding the Transmission of Bird Flu to Pets

Avian influenza, commonly known as bird flu, primarily affects birds but can infect mammals, including cats and dogs. Pets are usually infected with the virus through consumption of contaminated raw meat or exposure to contaminated environments. In reported cases, domestic cats that were not outdoors have developed serious symptoms after consuming contaminated raw pet food, leading in some cases to euthanasia.

Symptoms and Treatment in Pets

Pets infected with H5N1 may exhibit a range of symptoms, including:

Fever

Lethargy

Respiratory distress

Neurological signs

Given the severity of the disease, prompt veterinary care is crucial. Treatment options are limited, and in severe cases, euthanasia may be considered to prevent further suffering.

Industry and Regulatory Response

The emergence of bird flu in pet food has prompted a response from various stakeholders:

Pet food companies Northwest Naturals and Wild Coast Raw have announced recalls of affected products and are working with regulators to identify the sources of the contamination.

Regulatory Authorities: The U.S. Department of Agriculture and state departments of agriculture are investigating to trace the origin of infected poultry used in pet food. Concerns have been raised about certain meat products that pass USDA’s standard inspections, which could potentially lead to contamination.

Veterinary Community: Veterinarians are advising pet owners to avoid feeding raw diets to their pets and to prefer fully cooked foods to reduce the risk of contamination. Dr. Ryan Scholz, state veterinarian for the Oregon Department of Agriculture, stressed, “We are confident that this cat contracted H5N1 from consuming Northwest Naturals raw and frozen pet food.”

Historical Context and Future Implications

This incident is reminiscent of the 2007 pet food recall, when widespread contamination led to numerous pet illnesses and deaths. The current situation highlights the ongoing vulnerabilities in the pet food supply chain, especially with regard to raw products. As avian influenza continues to affect wild bird populations, the potential for spread to pets and pet food remains a pressing concern. Increased regulatory oversight, rigorous testing protocols, and increased awareness among pet owners are important steps to prevent future outbreaks.

Recommendations for pet owners

To protect pets from avian influenza:

Avoid raw diets: Choose commercially prepared, fully cooked pet foods to eliminate potential pathogens.

Monitor for symptoms: Be vigilant for signs of illness in pets, especially if they have consumed raw poultry products, and seek immediate veterinary attention if symptoms develop.

Stay informed: Stay up to date on pet food recalls and updates from reputable sources to ensure pet food safety.

By following these guidelines and staying informed, pet owners can play a key role in protecting their companions from avian influenza and other foodborne illnesses.

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