Source: WHO, Wikipedia
By codingstreets Jan 31, 2024
H5N1, also known as the Avian Influenza or Bird Flu, is a subtype of the Influenza A virus.
It can cause illness in humans and many other species.
A bird-adapted strain of H5N1, called HPAI A (H5N1), is the highly pathogenic causative agent of H5N1 flu.
It is enzootic (maintained in the population) in many bird populations, especially in Southeast Asia.
One strain of HPAI A (H5N1) is spreading globally after first appearing in Asia.
It is epizootic (an epidemic in nonhumans) and panzootic (affecting animals of many species, especially over a wide area), killing tens of millions of birds.
The H5N1 strain is a fast-mutating, highly pathogenic avian influenza virus (HPAI) found in multiple bird species.
According to the World Health Organization (WHO) and the United Nations Food and Agriculture Organization, H5N1 pathogenicity is gradually continuing to rise in endemic areas.
However, there is “no evidence of sustained human-to-human transmission” of the virus.
The global HPAI situation significantly improved in the first half of 2008, but the FAO reports that imperfect disease surveillance systems mean that occurrence of the virus remains underestimated and underreported.