([url]http://vitals.nbcnews.com/_news/2012/08/17/13336825-is-spraying-for-west-nile-virus-safe?lite)Texas[/url] state health officials, alarmed by the worst outbreak of West Nile virus since the infection first hit the United States in 1999, started spraying insecticide from airplanes Thursday night. But it is safe?



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