West Nile is typically transmitted to humans this way: A bird that has the virus is bitten by a mosquito. Then the mosquito, now a carrier, bites a human.

西尼罗病毒通常通过这种方式传给人:一只带有病毒的鸟被蚊子叮咬

West Nile is typically transmitted to humans this way: A bird that has the virus is bitten by a mosquito. Then the mosquito, now a carrier, bites a human.

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