West Nile Virus is Back with a Vengeance

West Nile Virus is Back with a Vengeance

The Centers for Disease Control and Prevention has served notice that 47 states and the District of Columbia have confirmed cases of West Nile virus (WNV) in people, birds, or mosquitoes this year. All told, there have been 1,295 cases among humans. California has seen the most—258 cases, with 47 popping up in a single week this month, including 12 fatalities. Texas is second in the country, with 105 cases, but has a higher number …

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