A resident of Richardson has been diagnosed with West Nile fever, the first human West Nile case in Dallas county this year.
Health officials said the illness was reported in the 75080 zip code, but no additional information about the victim was released.
After mosquitoes infected with the West Nile virus were found in parts of Southwest and Southeast Dallas, the city announced trucks will be spraying those areas to control the disease-carrying insects on Tuesday and Wednesday nights.
In Southwest Dallas, the area to be sprayed is within an area bounded generally on the north by Davis Street, on the west by Cockrell Hill Road, bounded by Meredith Drive on the south and Westmoreland Road on the east.
In Southeast Dallas, the area to be sprayed is within an area bounded generally on the north by Grady Lane, on the west by Acres Drive, by Zurich Drive on the south and Edgeworth Drive on the east.
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The city advises residents of these areas to remain inside during the spraying, which is scheduled to begin each night at 10 p.m. and continue until 2 a.m., weather conditions permitting. If you see a spraying truck and you're in a vehicle, keep the windows rolled up and the air conditioning on until the truck is away from the area.
Dallas County Health and Human Services reports a total of 30 mosquito traps have tested positive for West Nile virus this year. The state health department reports a total of two human cases of West Nile cases in 2013, one of them in Tarrant County and the other in Anderson County, about 100 miles southeast of Dallas.
There have been no West Nile-related human fatalities recorded this year.