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Beginning of article

AS WEST Nile virus cases surged in the United States this summer, public health officials were faced with controlling mosquitoes, tracking infections and educating the public about prevention.

Texas has been particularly affected by this year's West Nile epidemic. As of mid-September, the state had recorded 40 percent of the nation's more than 3,100 cases, according to the Centers for Disease Control and Prevention. In the state's hardest hit areas around Dallas, state and county health officials brought in airplanes for aerial mosquito control spraying.

"We knew we were on track for having the worst numbers since 2002," Carrie 'Williams, spokeswoman for the Texas Department of State Health …