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May 15, 2024 · Transmission. West Nile virus is most commonly spread to people by the bite of an infected mosquito. Mosquitoes become infected when they feed on infected birds. Infected mosquitoes then spread West Nile virus to people and other animals by biting them.
Oct 3, 2017 · West Nile virus is mainly transmitted to people through the bites of infected mosquitoes. The virus can cause severe disease and death in horses. Vaccines are available for use in horses but not yet available for people. Birds are the natural hosts of West Nile virus.
May 15, 2024 · West Nile virus disease (West Nile) is caused by a virus primarily spread to people through the bite of infected mosquitoes. West Nile virus is maintained in the environment between mosquitoes and birds.
Jul 3, 2023 · It's a flavivirus —a specific type of RNA virus that can infect humans, birds and horses. "West Nile virus is transmitted predominantly through the bite of an infected mosquito. Less commonly, it can be transmitted through other means, like blood transfusion," says Dr. Pritt.
May 15, 2024 · West Nile Virus West Nile virus is primarily spread by mosquitoes. Learn about areas at risk, the illness it causes, and ways to prevent becoming infected. Site Index
As detailed above, in most cases the virus is transmitted by the Culex mosquito vector ( 4 ), but transmission may occur through blood transfusion, organ transplantation, breast-feeding, or intrauterine exposure, and laboratory-acquired infection has also been reported ( 35a, 81, 85, 103, 177 ).
What causes West Nile virus? West Nile virus is spread to humans through the bite of an infected female mosquito. The mosquitoes get the virus when they bite an infected bird. Crows and jays are the most common birds linked to the virus. But at least 110 other bird species can also carry the virus. West Nile virus isn't spread between humans.
