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Influenza A/H5N1 was first detected in 1959 after an outbreak of highly pathogenic avian influenza in Scotland, which infected two flocks of chickens. [59] [60] The next detection, and the earliest infection of humans by H5N1, was an epizootic (an epidemic in nonhumans) of H5N1 influenza in Hong Kong's poultry population in 1997. This outbreak ...
"Epidemiology of WHO-confirmed human cases of avian influenza A(H5N1) infection" (PDF). "WHO Avian influenza resource (updated)". Archived from the original on February 1, 2004. "Facts About Avian Influenza (Bird Flu) and Avian Influenza A (H5N1) Virus". 2019-03-21. "FAO information on Avian Influenza - Latest news, Disease Card, Maps, Animations".
For example, "H5N1" designates an influenza A subtype that has a type-5 hemagglutinin (H) protein and a type-1 neuraminidase (N) protein. [22] Additionally, further variation exists within viral subtypes which may lead to significant differences in behavior. [24]
The threat of avian flu has dominated public health discourse as cases become increasingly more widespread and severe. H5N1, a highly pathogenic strain, was present in several continents as early ...
The U.S. has experienced its first death from bird flu (H5N1). The death happened in a Louisiana patient who contracted H5N1 after being exposed to a combination of a non-commercial backyard flock ...
An unusual surge in flu viruses detected at wastewater treatment plants in California and other parts of the country is raising concerns among some experts that H5N1 bird flu may be spreading ...
Between January and October 2023, at least 24,000 South American sea lions died from H5N1 flu, with the outbreak starting on the Pacific coast of Peru, moving down the coast to Chile and then up the Atlantic coast of Argentina. [40] An outbreak of H5N1 killed 70% of Southern elephant seal pups born in the 2023
H5N1 bird flu has been discovered in a pig in Oregon, a development that has sparked new concerns among infectious disease experts.