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[8] [10] In 2020, reassortment (genetic "swapping") between these H5-2.3.4.4b viruses and other strains of avian influenza led to the emergence of a H5N1 strain with a H5-2.3.4.4b gene. [8] The virus then spread across Europe, first detected there in the autumn of 2020, before spreading to Africa and Asia . [ 1 ]
From February to April 2022, avian flu outbreaks in United States have resulted in the culling of more than 22.8 million birds in 24 states. [24] Avian flu has affected England. In Norfolk, Suffolk and parts of Essex, poultry has been mandated to be kept indoors after the affected areas were placed in an Avian Influenza Prevention Zone. [25]
From this point on, avian influenza experts increasingly refer to containment as a strategy that can delay but not prevent a future avian flu pandemic. [citation needed] Variants have been found in a number of domestic cats, leopards, and tigers in Thailand, with high lethality. [18] "The Thailand Zoo tiger outbreak killed more than 140 tigers ...
Bird flu led to the deaths of nearly 50 million domestic birds in 2024 and more than 19 million already this year, according to USDA. Any poultry farm where the virus is detected must put all its ...
Covid was spreading easily from person to person when it arrived in the US in 2020, but bird flu has been lurking for years, mostly as a problem for animals. ... Avian influenza, or bird flu, is a ...
Long Island ducks used as breeding stock at Crescent Duck Farm, move around a barn, in Aquebogue, New York, last October. The continued spread of bird flu has driven a culling of about 100,000 ...
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.
This is a timeline of influenza, briefly describing major events such as outbreaks, epidemics, pandemics, discoveries and developments of vaccines.In addition to specific year/period-related events, there is the seasonal flu that kills between 250,000 and 500,000 people every year and has claimed between 340 million and 1 billion human lives throughout history.