West Nile-bearing mosquito found on far West Side

Culex mosquitos are bred inside the insectary at the Mosquito Control division of the Harris County Public Health and Environmental Services, Tuesday, May 3, 2016, in Houston. The lab currently tests mosquitos that are trapped daily around the county for West Nile Virus, St. Louis encephalitis and Chikungunya. less Culex mosquitos are bred inside the insectary at the Mosquito Control division of the Harris County Public Health and Environmental Services, Tuesday, May 3, 2016, in Houston. The lab currently tests mosquitos ... more Photo: Mark Mulligan /Houston Chronicle Buy photo Photo: Mark Mulligan /Houston Chronicle Image 1 of / 21 Caption Close West Nile-bearing mosquito found on far West Side 1 / 21 Back to Gallery

First responders are going door-to-door in far West Bexar County today to alert residents that a mosquito bearing the West Nile virus was found in that area earlier this week.

The immediate area of the discovery underwent a larvicide treatment, according to Bexar County officials who added that area residents were being urged to take precautions to avoid mosquitoes.

The offending mosquito turned up in one of the 27 traps set up by the county Public Works Department in the Wildhorse subdivision, in an unincorporated area just south of FM 1560 and Shaenfield Road. State testing confirmed the presence of West Nile.

RELATED: 13th Zika case found in San Antonio

County officials said they’re continuing their warm-weather mosquito eradication programs, including fogging in unincorporated areas to prevent the Zika virus, West Nile and Chikungunya. The public is being urged to use mosquito repellent and to eliminate standing water where mosquitoes breed.

As of Tuesday, data from the Texas Department of State Health Services said Bexar County is one of about four dozen counties with confirmed West Nile virus activity.

The state agency said most people infected with West Nile display no symptoms but some infections can result in serious illness or death.

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