Mosquitos are sorted at the Dallas County mosquito lab in Dallas, Thursday, Aug. 16, 2012. The last time Dallas used aerial spraying to curb the mosquito population, Texas' Lyndon Johns

 

              Mosquitos are sorted at the Dallas County mosquito lab in Dallas, Thursday, Aug. 16, 2012. The last time Dallas used aerial spraying to curb the mosquito population, Texas
Mosquitos are sorted at the Dallas County mosquito lab in Dallas, Thursday, Aug. 16, 2012. The last time Dallas used aerial spraying to curb the mosquito population, Texas' Lyndon Johnson was in the White House, Mission Control in Houston was launching Gemini missions and encephalitis was blamed for more than a dozen deaths. But for the first time in more than 45 years, the city and county planned Thursday to resume dropping insecticide from the air to combat the nation's worst outbreak of West Nile virus, which has killed 10 people and caused at least 200 others to fall ill. (AP Photo/LM Otero)