Mosquito Risks
The Integrated Vector Management (IVM) Program at Williamson County and Cities Health District (WCCHD) protects the health of county residents from vector-borne diseases through surveillance, control, prevention, and community outreach.
2023 Season Data
West Nile Virus-Positive Collection Date |
City | Approximate Location | Adult Mosquito Control |
9/14/23 | Unincorporated Wilco | Cat Hollow Park - Brushy Creek MUD | None |
9/12/23 | Granger | Colorado Street | None |
9/8/23 | Georgetown | Blue Hole Park | None |
9/8/23 | Taylor | Murphy Park | None |
9/6/23 | Cedar Park | Veterans Park | None |
8/31/23 | Unincorporated Wilco | Cat Hollow Park - Brushy Creek MUD | None |
8/29/23 | Georgetown | Sun City | 9/3 & 9/4 |
8/29/23 | Bartlett | Mt. Aratat Community Park | 9/3 & 9/4 |
8/29/23 | Taylor | Murphy Park | 9/3 & 9/4 |
8/17/23 | Unincorporated Wilco | Beck Preserve - Brushy Creek MUD | None |
8/17/23 | Unincorporated Wilco | Cat Hollow Park - Brushy Creek MUD | None |
8/10/23 | Unincorporated Wilco | Beck Preserve - Brushy Creek MUD | None |
8/8/23 | Georgetown | Sun City | 8/14 & 8/15 |
8/3/23 | Unincorporated Wilco | Cat Hollow Park - Brushy Creek MUD | None |
7/27/23 | Unincorporated Wilco | Cat Hollow Park - Brushy Creek MUD | None |
7/27/23 | Cedar Park | Milburn Park | None |
7/25/23 | Granger | Colorado Street | 8/6 & 8/7 |
7/20/23 | Unincorporated Wilco | Cat Hollow Park - Brushy Creek MUD | None |
7/18/23 | Unincorporated Wilco | Sonterra MUD Community Pool | 7/23 & 7/24 |
7/13/23 | Unincorporated Wilco | Cat Hollow Park - Brushy Creek MUD | None |
7/7/23 | Unincorporated Wilco | Beck Preserve - Brushy Creek MUD | None |
6/27/23 | Georgetown | Blue Hole Park | None |
6/21/23 | Unincorporated Wilco | Sonterra MUD Community Pool | 6/25 & 6/26 |
6/13/23 | Unincorporated Wilco | Sonterra MUD Community Pool | None |
5/23/23 | Georgetown | Geneva Park | None |
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WCCHD Integrated Vector Management (IVM) protects Williamson County by:
- Monitoring mosquito populations through vector surveillance methods.
- Detect arthropod-borne (Arbo) viruses through samples collected and tested at the DSHS laboratory.
- Educate citizens, community groups, and the media regarding mosquito control and prevention.
- Utilize surveillance data from samples and evidence-based best practices to recommend the most appropriate mosquito control measures to cities.
- Track and monitor mosquito-borne disease activity throughout Williamson County using Geographical Information System (GIS) software.
- Coordinate the Mosquito Working Group with other member cities in Williamson County.
- Investigate arboviral infections in humans that are reported to WCCHD.
- Generating a weekly arbovirus summary report for Williamson County during WNV season.
- Providing an early warning system to detect arboviruses in the mosquito population before humans and animals are infected.
- Informing local public health officials and medical providers of the possible risk for human infections.
- Providing information to the public about the arboviral activity so they can take the proper precautions.
- Allowing member cities to target specific areas for mitigation quickly and appropriately.
- Using environmentally conscientious approaches to control larval and adult mosquitoes.
- Using a combination of control measures that best meet the needs of specific cities.
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WCCHD IVM team is working towards expanding services and resources to better protect Williamson County. The expansion will further explore GIS mapping to identify and mitigate mosquito breeding sites, expanding mosquito surveillance and to include larval mosquitoes, developing a tick surveillance program, and increase in-house capacity to identify potential vector species.
WHY THIS PROGRAM WAS STARTED: The mosquito surveillance program at WCCHD began in 2013 following a large outbreak of West Nile virus (WNV) in Texas in 2012. This allows public health to monitor the virus in both human and mosquito populations and use evidence-based practices to make control recommendations to areas with viral activity.
Homeowner Checklist
Skeeter Beater Coloring Book
CDC - A to Z Index of Vector-Borne Diseases
CDC - Division of Vector-Borne Diseases
DSHS - Arbovirus Weekly Activity Reports
DSHS - Texas West Nile Virus FAQ
Vector FAQ
Mosquito Prevention Tips
How to Choose the Right Insect Repellent
Can dogs, cats and other pets get the West Nile virus?
How do humans get West Nile virus?
What are the symptoms of West Nile virus infection?
How long does it take to get sick if bitten by an infected mosquito?
Is there a treatment or a vaccine for West Nile virus infection?
Can a human get West Nile virus twice?
What is the risk of someone becoming infected with West Nile?
Besides mosquitoes, can you get West Nile Virus from other insects or ticks?
Do we have West Nile Virus in Williamson County?
Where did West Nile come from?
I've heard of " suspect cases," " positive cases," " confirmed cases," and " probable cases." What does it all mean?
How does West Nile virus affect backyard chickens?