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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.
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]
"Facts About Avian Influenza (Bird Flu) and Avian Influenza A (H5N1) Virus". 2019-03-21. "FAO information on Avian Influenza - Latest news, Disease Card, Maps, Animations". Archived from the original on 2012-01-26 "Avian Influenza (Bird Flu): Agricultural and Wildlife Considerations". CIDRAP.
What we think of as the seasonal flu in humans is caused by types A and B. Bird flu falls under the umbrella of influenza A viruses. The strain currently spreading in the U.S. is H5N1, an HPAI ...
Bird flu can be transmitted from birds to humans if they come in close contact with infected animals. According to experts, infected birds shed flu viruses in their saliva, mucous, and feces.
Dairy industry experts say the virus entered California after local cows were shipped to another state and then returned to California.
On November 7, the CDC reported asymptomatic bird flu infection in 4 workers at dairy farms. The workers didn't recall ever being sick but had antibodies showing that they had been infected with bird flu. [98] On November 22, the CDC confirmed the first case of bird flu in a U.S. child, being the 55th case of bird flu in humans in the U.S.
Bird flu is a scary illness with a high mortality rate. But so far, infections in the U.S. have been relatively mild—until now. A patient in Louisiana has been hospitalized with a severe case of ...