Influenza A virus subtype H5N1 is a subtype of the influenza A virus that causes the disease avian influenza. It is enzootic in many bird populations, and also panzootic. A/H5N1 virus can also infect
Colorized transmission electron micrograph of Avian influenza A H5N1 viruses
The N in H5N1 stands for "Neuraminidase", the protein depicted in this ribbon diagram.
Influenza A virus subtype H7N9 is a subtype of the influenza A virus, which causes influenza, predominantly in birds. It is enzootic in many bird populations. The virus can spread rapidly through poul
Influenza A virus subtype H5N1
…and each outbreak has been limited to a few people. All subtypes of avian Influenza A have potential to cross the species barrier, with H5N1 and H7N9 considered the biggest threats. In December 2024, researchers showed one mutation could allow the virus to switch its specificity to human receptors,increasing…
Live poultry market in Xining, China, 2008.
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