How is West Nile virus spread to persons?

persons spread virus West Nile
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How is West Nile virus spread to persons?

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West Nile virus is usually spread to persons by the bite of an infected mosquito. Mosquitoes become infected by feeding on a bird that carries the virus in its blood. Additional routes of spread were discovered in 2002. These methods are extremely rare and include blood transfusions, organ transplants, and spread from mothers to their children in breast milk or through the womb.