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In September 2024, the CDC confirms that two dairy workers in California have contracted bird flu, marking the 15th and 16th human cases in this year's ongoing outbreak, which has impacted dairy cows nationwide. [93] The cases occurred in California's Central Valley, where over 50 herds have been affected since August.
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.
In 2015, an outbreak of avian influenza subtype H5N2 was identified in a series of chicken and turkey farming operations in the Midwestern United States. By May 30, more than 43 million birds in 15 states had been destroyed as a result of the outbreak, including nearly 30 million in Iowa alone, the nation's largest egg producer. In the ...
At the end of November 2020, about 10,500 turkeys were killed on a British farm in North Yorkshire in order to limit the spread of H5N8 bird flu after health officials discovered an outbreak. [32] On 16 December several birds were found dead on the Isle of Wight, in the UK, and the cause of death was identified as H5N8. [citation needed]
During early 2017, outbreaks of avian influenza A(H7N9) occurred in poultry in the USA. The strain in these outbreaks was of North American origin and is unrelated to the Asian lineage H7N9 which is associated with human infections in China. [40] In May 2024, an HPAI A/H7N9 was detected on a poultry farm with 160,000 birds in Terang, Australia ...
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.
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]
H5N6 is a subtype of the species Influenza A virus (sometimes called bird flu virus). 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 ...