Keep up your guard for West Nile virus, experts say

Researchers continue to study ways to nip the West Nile virus in the bud and monitor its spread by tracking rainfall, groundwater levels, mosquito abundance, wild bird populations and virus transmission to animals including horses and sentinel chickens. Researchers use these data to track the virus transmission between mosquitoes and wild birds, noting when mosquito infection rates reach the levels that can infect humans.

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