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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.
People with regular exposure to pigs are at increased risk of swine flu infections. Around the mid-20th century, the identification of influenza subtypes was made possible, allowing accurate diagnosis of transmission to humans. Since then, only 50 such transmissions have been confirmed. These strains of swine flu rarely pass from human to human.
H5-2.3.4.4b can be prevented by vaccination in chickens. In China, The H5-Re14 (2.3.4.4b) strain used in updated vaccines since 2022 is a reasonably good match for the new virus. [11] In 2024, Penn Medicine announced it had created a human avian flu vaccine on the same platform as its COVID-19 vaccine.
There are several H5N1 vaccines for several of the avian H5N1 varieties. H5N1 continually mutates rendering them, so far for humans, of little use. While there can be some cross-protection against related flu strains, the best protection would be from a vaccine specifically produced for any future pandemic flu virus strain.
H5N1 bird flu has been discovered in a pig in Oregon, a development that has sparked new concerns among infectious disease experts.
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The real number of swine flu cases in the United States could be “upwards of 100,000,” a top public health official estimated on Friday — far higher than the official count of 7,415 cases confirmed by laboratories.
H5N1 bird flu has been identified in a pig in the United States for the first time, the US Department of Agriculture said Wednesday.