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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.
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 viruses have been found in many other animals, including cattle, horses, dogs, cats, and marine mammals. Nearly all influenza A viruses are apparently descended from ancestral viruses in birds. The exception are bat influenza-like viruses, which have an uncertain origin. These bat viruses have HA and NA subtypes H17, H18, N10, and N11.
Here are five things you should know about bird flu. What type of virus is it and how does it spread? H5N1 comes from a group of four flu, or influenza, viruses: A, B, C and D. The strain called ...
A/H5N1 virus can also infect mammals (including humans) that have been exposed to infected birds; in these cases, symptoms are frequently severe or fatal. [2] A/H5N1 virus is shed in the saliva, mucus, and feces of infected birds; other infected animals may shed bird flu viruses in respiratory secretions and other body fluids (such as milk). [3]
According to the CDC, LPAI viruses cause mild or no disease, and HPAI cause severe disease and high mortality rates in infected birds. Bird flu cost the government at least $660 million by Feb ...
That same week, the virus infected an egg laying farm in Cache County, Utah, costing the farmer 1.8 million chickens, while another 839,700 egg-layers were killed in Franklin County in Washington ...
The virus can spread rapidly through poultry flocks and among wild birds; it can also infect humans that have been exposed to infected birds. [2] A/H7N9 virus is shed in the saliva, mucus, and feces of infected birds; other infected animals may shed bird flu viruses in respiratory secretions and other body fluids. [2]