U.S. researchers examined epidemiologic, meteorologic and location patterns from the 2012 West Nile outbreak in Dallas County, Texas, and identified factors associated with the possibility of outbreaks. Unusually mild winters can allow more time for mosquito-to-bird transmission in spring, for example. And dense neighborhoods with a high rate of vacancies and untended pools may be good targets for mosquito-control efforts, researchers said. The findings were published in the Journal of the American Medical Association.
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