First H5N1 Detections in Swine
The USDA and Oregon officials are investigating HPAI H5N1 in a backyard farm, marking the first U.S. swine case. The farm is quarantined, with low public health risk and no pork safety concerns.
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The U.S. Department of Agriculture (USDA) and Oregon state veterinary officials are investigating cases of Highly Pathogenic Avian Influenza (HPAI) H5N1 detected in a backyard farm in Oregon, which includes both poultry and swine. The Oregon Department of Agriculture reported the first H5N1 detection in Crook County on October 25, 2024. Subsequently, on October 29, the USDA confirmed that one of the farm's pigs was infected, marking the first detection of H5N1 in swine in the U.S. Although the pigs showed no signs of illness, they were euthanized for further testing. The farm has been quarantined to prevent the virus's spread, and other animals are under surveillance. The USDA has conducted genomic sequencing of the virus, which has not indicated any changes that would increase transmissibility to humans, maintaining a low public health risk. The USDA emphasizes the importance of biosecurity measures for farmers and is investing in vaccine research to combat the virus. The agency reassures that there is no concern regarding the safety of the national pork supply due to these findings.
- H5N1 detected in a backyard farm in Oregon, affecting both poultry and swine.
- First detection of H5N1 in U.S. swine confirmed by USDA.
- No signs of illness in swine; animals were euthanized for testing.
- Farm quarantined; other animals under surveillance.
- Public health risk remains low; no safety concerns for the pork supply.
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4 commentsOne interesting thing I came across was that the further north I went, the fewer random pigs I saw on the streets. Eventually it got to the point where there wasn't any. It was noticeable.
Things eventually turned into checkpoints where a local military would stop you, make you get off your motorbike and spray down the wheels and under carriage with some liquid (probably bleach). Asking about this, it was all about trying to limit the spread of some virus infecting all the pigs. Most likely given the regional spread, it came down from China.
Googling it now, it was called ASF and killed 86,000 pigs (probably more)...
https://pmc.ncbi.nlm.nih.gov/articles/PMC10310380/
https://apps.fas.usda.gov/newgainapi/api/Report/DownloadRepo...
https://wwwnc.cdc.gov/eid/article/30/5/23-1775_article
If the USDA is talking about this... it could very well be a huge deal.
> Many influenza experts are concerned about enhanced zoonotic potential for H5N1 viruses that might spill over and establish ongoing infections in swine populations. Swine already endemically carry many human spillover H1 and H3 viruses, and pigs are prone to easily reassort viral segments when co-infected with 2 viral strains. This potential reassortment between a mammalian-adapted H5N1 and swine-human H1-H3 / N1-N2 endemic viruses in commercial production swine is a potential shortcut to a fully adapted H5 human pandemic strain[0].
[0]: https://hogvet51.substack.com/p/california-h5n1-dairy-outbre...
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