Published: Aug 17, 2012 5:16 PM EDT

DALLAS (AP) - Aerial spraying of insecticide will resume across the remaining half of Dallas County Friday night to curb the mosquito population.
Dallas County Judge Clay Jenkins said rain cut short the first aerial targeting on mosquitoes in more than 45 years Thursday, grounding two planes around midnight.
Officials said about half the county's 101,000 acres were covered. A Friday morning check of area hospitals revealed no reports of negative reaction to the sprayed pesticides.
Dallas County has been the epicenter of the nation's worst outbreak of West Nile virus, which has killed 10 people and sickened at least 200 others. The hot, dry weather has created ideal conditions for mosquitoes, speeding up their life cycle and turning standing water stagnant.
Mosquitoes carry the virus.

(Copyright 2012 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.)