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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 ]
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.
H5N1 is a subtype of the Influenza A virus, the viruses responsible for influenza in humans and many other animal species. [1] A bird-adapted strain of H5N1, called HPAI A(H5N1) for "highly pathogenic avian influenza virus of type A of subtype H5N1", is the causative agent of H5N1 flu.
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 ...
Bird flu could merge with seasonal flu to make mutated virus that could spread among humans, CDC warns Almost a dozen people have tested positive for bird flu . What to know about H5N1 disease ...
Timeline of flu pandemics and epidemics caused by influenza A virus. In 1918-1919 came the first flu pandemic of the 20th century, known generally as the "Spanish flu", which caused an estimated 20 to 50 million deaths worldwide.
Bird flu has been killing birds for decades.Strains of the virus have been detected in birds since 1996, with serious outbreaks in 2004 and 2005. But the current outbreak is the worst Avian flu in ...
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.