Mosquito & Vector Control
The Mosquito & Vector Control Division protects the health and well-being of county residents through surveillance, control, education, research, and technology to prevent and control mosquito-borne diseases, including St. Louis encephalitis (SLE) and West Nile Virus (WNV) encephalitis.  

Activities include:
  • Monitoring the Culex mosquito population, the primary transmitter of SLE and WNV 
  • Laboratory analysis of mosquito samples to detect SLE and WNV 
  • Monitoring and testing of live and dead birds for SLE and WNV 
  • Conducting ground and aerial spraying activities in areas with confirmed SLE and WNV 
  • Providing education, training and information to citizens, schools, community groups and the media regarding SLE, WNV and mosquito control 
  • Conducting research to incorporate data into operational activities
  • Utilizing the Geographical Information System (GIS) to track and monitor mosquito-borne diseases

Learn More About Services

For more information contact:

Harris County Public Health
Mosquito Control Division
3330 Old Spanish Trail, Bldg. D
Houston, TX 77021

Open Monday Through Friday
8:00 AM to 5:00 PM

Phone: (713) 440-4800
Fax: (713) 440-4795




Microsoft Premonition Partnership

Harris County Public Health (HCPH) is proud to announce that we have teamed up with Microsoft to help expand their Microsoft Premonition efforts! Learn more about the initiative and how it will help us gather data to combat diseases threats to Harris County.




View Project Info






Services Services

To view services offered by the Harris County Public Health Mosquito and Vector Control Division, view the Mosquito Control Services page or follow the links below.

Beginning September 2020, HCPH has partnered with Microsoft for their mosquito capture and tracking initiative, Microsoft Premonition. Learn more here.




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