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CHICAGO (Reuters) -H5N1 bird flu was confirmed in a pig on a backyard farm in Oregon, the first detection of the virus in swine in the country, the U.S. Department of Agriculture said on Wednesday.
The 1918 flu pandemic in humans was associated with H1N1 and influenza appearing in pigs; [72] this may reflect a zoonosis either from swine to humans, or from humans to swine. Although it is not certain in which direction the virus was transferred, some evidence suggests that in this case pigs caught the disease from humans. [ 69 ]
H5N1 bird flu has been identified in a pig in the United States for the first time, the US Department of Agriculture said Wednesday.
Oregon state and federal officials confirmed Wednesday that H5N1 bird flu was found in a pig living in Crook County — the first such swine infection reported in the current outbreak.
Evans said the infection of the herd was the first known case of the H1N1 virus being transmitted from humans to pigs. [15] In Canada in early June, an Alberta pig farmer whose herd was infected with the new swine flu virus culled his entire herd. In May he had already culled 500 animals from his herd.
The Centers for Disease Control and Prevention (CDC) identified the first two A/09(H1N1) swine flu cases in California on April 17, 2009, via the Border Infectious Disease Program, [135] for a San Diego County child, and a naval research facility studying a special diagnostic test, where influenza sample from the child from Imperial County was tested. [136]
Pigs are mixing bowls for bird flu and human flu viruses, increasing the risk of mutations that help H5N1 spread to humans. It's still not inevitable.
H5N1 was also detected in a pig in Oregon, the first ever reported case in the USA. [96] Meanwhile, by late November human cases of H5N1 in the USA increased to over fifty for the year with infections being reported in seven states. [97] On November 7, the CDC reported asymptomatic bird flu infection in 4 workers at dairy farms.