The move comes after Governor Schwarzenegger declared a state of emergency yesterday in San Joaquin, Kern and Colusa Counties because of the spread of West Nile Virus. More than 130-thousand acres will be sprayed to kill mosquitoes that can carry the disease.  Mosquito and Vector Control District spokesman Aaron Devencenzi says the project might take more than one night. 
  
“If something isn’t finished then it will be rotated until the morning of Sunday, and it will continue dawn-to-dusk, dawn-to-dusk, until we’re able to get the work done”.
 
The insecticide spray will include areas in Manteca, Stockton and Lodi.  So far this year there have been four human deaths in California from the virus, one in San Joaquin County the others were in Kern and Colusa Counties.  Reports of the illness prompted Sacramento mosquito control officials to order urban aerial spraying this week.  
 
Opponents to aerial insecticide spraying say it poses health risks to humans.  Mosquito control officials say exposure to the pesticide is too low to create health problems.