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For more information

CDC West Nile Virus Information

CDC St. Louis Encephalitis Information

Department of State Health Services - West Nile Virus Information

Learn more about Mosquitoes

Remember the Four Ds for Fighting the Bite

The City of Irving has an active program for assessing the numbers and types of mosquitoes in various neighborhoods. Each week, a mosquito-control technician sets out approximately 12 traps throughout the city. The number of mosquitoes trapped at each location is logged, and each trap net's catch (called a "pool" of mosquitoes) is shipped to the state health department's laboratory in Austin for testing. Mosquitoes are tested for the West Nile Virus (WNV), St. Louis encephalitis (SLE) and several other mosquito-borne viruses.

To report stagnant water or request a trap to sample mosquitoes, call the City of Irving's Vector Control Hotline at (972) 721-3755.

Both the federal Centers for Disease Control and Prevention (CDC) in Atlanta, and the Texas Department of State Health Services in Austin have written guidelines and regulations that relate to municipalities’ and county governments’ use of airborne pesticides (truck-mounted sprayers or aircraft-mounted sprayers). This form of mosquito control is known as “adulticiding” or killing adult mosquitoes.

Though most U.S. cities used adulticiding throughout the latter half of the twentieth century to reduce “nuisance” mosquitoes (those species that bite humans but normally don’t carry disease), nuisance spraying is heavily discouraged by state and federal health officials. Irving has adopted the recommendations of the CDC when deciding when to send its vector control technician out at night to use the truck-mounted adulticiding unit.

These guidelines are as follows:

  • When a particular trap location has over 50 female mosquitoes in one night of trapping.
  • When a mosquito pool (one trap’s catch of mosquitoes) has tested positive for either WNV or SLE.
  • When the county or state health department reports a suspected human case of WNV or SLE in Irving.
  • When the county or state health department reports a confirmed human case of WNV or SLE in Irving.

Mosquito/West Nile Virus Control Information Center


2013 Click to expand

• Aug. 10: Dallas County Health and Human Services West Nile Health Advisory
• Aug. 3: Dallas County Health and Human Services West Nile Health Advisory
• July 30: Dallas County Health and Human Services West Nile Health Advisory
• July 27: Dallas County Health and Human Services West Nile Surveillance Report
• July 16: JAMA Report: The 2012 West Nile Encephalitis Epidemic in Dallas
• July 15: Dallas County Health and Human Services West Nile Surveillance Report
• July 2: Dallas County Health and Human Services West Nile Surveillance Report
• June 30: Guide for Epidemiologic Analysis of West Nile Virus Mosquito Trap Data in Dallas County
• June 30: All The Buzz About Mosquitoes (CBS News)
• June 21: Dallas County Health and Human Services West Nile Surveillance Report
• June 21: Guide for Epidemiologic Analysis of West Nile Virus Mosquito Trap Data in Dallas County
• June 18: Dallas County Health and Human Services West Nile Health Advisory
• June 18: Irving 'Fights the Bite' (DMN)
• June 18: Irving Kids Fight the Bite Against West Nile Virus (KXAS-TV)
• June 8: Dallas County Health and Human Services West Nile Surveillance Report (PDF)
• June 5: Dallas County Health and Human Services Launches Public Online Map for Mosquito Surveillance (PDF)
• May 25: Dallas County Health and Human Services West Nile Surveillance Report (PDF)
• May 18: Dallas County Health and Human Services West Nile Surveillance Report (PDF)
• May 15: Texas State Senate Approves Bill Benefiting Mosquito Abatement (PDF)
• May 11: Dallas County Health and Human Services West Nile Surveillance Report (PDF)
• May 4: Dallas County Health and Human Services West Nile Surveillance Report (PDF)
• April 27: Dallas County Health and Human Services West Nile Surveillance Report (PDF)
• April 2: North Texas Region Unites to Fight West Nile Virus (PDF)
• March 24: Dallas County Hopes Online Map Sheds Light on Mosquito-Control Efforts
March 15: Open Line - Mosquito Control (ICTN)
• March 14: Irving Prepares for Busy Mosquito Season (KXAS-TV)