USDA Reports First Case of Bird Flu in Pig in Oregon; Public Risk Remains Low

On October 30, 2024, the USDA reported the first case of avian influenza A(H5N1) infecting a pig on a backyard farm in Oregon. While this is the first known case of bird flu in a pig in the U.S., the virus did not show any mutations that could make it more dangerous or easily spread to humans. The discovery of bird flu in pigs is concerning because pigs can catch flu from many animals, including birds and humans. When multiple viruses infect the same animal, they can mix genes, potentially creating new flu strains that might spread more easily.

However, the risk to the public remains low based on current information. The CDC is working with local health authorities to learn more about the outbreak in Oregon and California. They are monitoring the situation, assisting with testing, and helping farm workers stay safe. There is no evidence of the virus spreading from person to person in the U.S. at this time.

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