H5N1 virus
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The H5N1 virus is a subtype of avian influenza, commonly known as bird flu. This viral respiratory disease primarily affects poultry and other bird species but can be transmitted to humans. The first human cases were reported in 1997 in Hong Kong, resulting in severe illness and a high mortality rate.1
H5N1 is considered the most deadly variety of bird flu. While most human infections occur through close contact with infected birds or contaminated surfaces, sustained human-to-human transmission has not been observed. However, the virus's ability to mutate raises concerns about its potential to cause a pandemic. Symptoms in humans are similar to regular influenza, but severe cases can lead to life-threatening complications.123
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influenzaPandemics and epidemicsThis same virus, H5N1, reappeared among chicken flocks in Southeast Asia during the winter of 2003–04, again infecting some people fatally, and it has reappeared periodically since, primarily in wild birds, domestic poultry, and humans. Several other subtypes of bird flu viruses are known, including H7N2, H7N3, and…
Read MoreThis same virus, H5N1, reappeared among chicken flocks in Southeast Asia during the winter of 2003–04, again infecting some people fatally, and it has reappeared periodically since, primarily in wild birds, domestic poultry, and humans. Several other subtypes of bird flu viruses are known, including H7N2, H7N3, and…
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…avian influenza A virus subtype H5N1 in poultry in Hong Kong led to severe illness in 18 people, one-third of whom died.
Read More…avian influenza A virus subtype H5N1 in poultry in Hong Kong led to severe illness in 18 people, one-third of whom died.
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