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Avian influenza, also known as avian flu or bird flu, is a disease caused by the influenza A virus, which primarily affects birds but can sometimes affect mammals including humans. [1] Wild aquatic birds are the primary host of the influenza A virus, which is enzootic (continually present) in many bird populations.
A highly pathogenic strain of H5N9 caused an outbreak in 1966 in Ontario and Manitoba, Canada in turkeys, resulting in the slaughter of approximately 8,000 birds. [3] [4] In 1999 an H5 influenza A virus was isolated from a mallard in the Netherlands. [5] In 2008 An H5N9 virus was isolated from poultry in Aomori, Japan. [6]
Infected birds shed the virus in their saliva, mucus, and feces. The virus was first detected in poultry in 2013, since then spreading among wild bird populations and poultry around the world. Humans can be infected through unprotected contact with infected birds or contaminated surfaces. The virus transmits by getting into a person's eyes ...
The recent bird flu infection in a dairy worker in Texas has public health officials on high alert, though experts say the virus hasn't become more contagious, either among cows or people.
H5 N2 is a subtype of the species Influenzavirus A (avian influenza virus or bird flu virus). The subtype infects a wide variety of birds, including chickens, ducks, turkeys, falcons, and ostriches. Affected birds usually do not appear ill, and the disease is often mild as avian influenza viral subtypes go.
A recent bird flu outbreak at a mink farm has reignited worries about the virus spreading more broadly to people. Scientists have been keeping tabs on this bird flu virus since the 1950s, though ...
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 ...
Influenza A virus subtype H5N1 (A/H5N1) is a subtype of the influenza A virus, which causes the disease avian influenza (often referred to as "bird flu"). It is enzootic (maintained in the population) in many bird populations, and also panzootic (affecting animals of many species over a wide area). [ 1 ]