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West Nile Virus

Fight The Bite with DCHHS Online Mosquito Services

FightTheBiteDCHHS is committed to protecting the health and welfare of the communities we serve from mosquitoes and vector-borne disease. Residents experiencing a mosquito problem may call 214-819-2115 or click here to set up a free service request.Click here to check if mosquitoes have tested positive for West Nile in your zip code.

 

WNV Deaths 2018

 

Case #
City of Residence
Zip Code

 

Mosquito Season
There are more than 40 mosquito species in Dallas County.  While mosquitoes can be active year round, generally, mosquito season is from May to November.  During the winter Culex quinquefasciatus overwinter as adults in sheltered areas while Aedes species overwinter as eggs in flood prone environments.  Seasonally, with warm temperatures and proper water conditions, these species developed or emerge from their winter habitats.  It is during the summer months when the risk of mosquito-borne disease transmission is greatest from July-August.

What is West Nile virus?

West Nile virus (WNV) is a disease that is spread by the bite of an infected mosquito. Mosquitoes become infected when they feed on the blood from infected birds.

The infected mosquitoes can then transmit WNV to humans and animals. West Nile disease can vary in severity. People over 50 years of age have the highest risk of severe disease.

Severe WNV infections can cause neurologic complications such as encephalitis. Milder symptoms include fever, headache and muscle aches.

Frequently Asked Questions (FAQs) about WNV

  • Is it contagious?
    No. WNV is not spread through contact from person to person or from animal to person.
  • How is it diagnosed?
    Diagnosis of WNV requires a special blood test. Anyone who experiences symptoms of severe WNV illness should see a physician as soon as possible.
  • What is the treatment?
    There is no specific treatment for WNV infection. Patients receive supportive medical care and rehabilitation if needed.
  • What if I’m not experiencing any symptoms?
    Most infected people will show no symptoms. Symptoms typically develop between 3 to 14 days after a mosquito bite.
  • For other FAQs about WNV
    click here for English | click here for Spanish

Reports and Profiles

 

2

Click here for more reports and health advisories

Final 2017 Summary Arbovirus Surveillance Report (calender year)

WNV 2016 Disease Profile

Final 2016 Summary Arbovirus Surveillance Report (calender year)

WNV DCHHS Health Advisory 7/6/2016

WNV DCHHS Health Advisory 7/5/2016

WNV 2013 Guide for Epidemiologic Analysis of Mosquito Trap Data in Dallas County

WMV 2012-2015 Human Profiles

Download WNV educational and prevention materials:

Each file contains English & Spanish versions

DCHHS WNV poster

DCHHS Fight the Bites flyers general public | children

DCHHS WNV brochure in English

DCHHS WNV brochure in Spanish

 

DCHHS WNV Fact Sheet in Various Languages

 

MapVision-Public

To report mosquito activity, request service and search past treatments: click here.

West Nile Watch

West Nile Watch contains up-to-date information on prevention tips, positive mosquito traps and human cases. Click here for current issue

 

 

 

 

More Information

DCHHS PSA: West Nile and Zika Viruses

DCHHS Comunicado de Interés Público: Los Virus del Nilo Occidental y Zika y La Prevención de Mosquitos

Texas Department of State Health Services information on WNV

CDC information on WNV

Texas A&M AgriLife Extension -  Presentation - Introduction to Mosquito Biology and Key North Texas species

Texas A&M AgriLife Extension Mosquitoes and Disease Newsletter

Take a virtual tour of a home with potential mosquito breeding sites at http://mosquitosafari.tamu.edu/.

 

For the Media and News Updates

/department/hhs/pressreleases.html
/department/hhs/news.html

For general questions or for more information about
Dallas County Health and Human Services please call 214-819-2000.

 

Ganesh Shivaramaiyer
Interim Director
Christopher Perkins, D.O., M.P.H.
Medical Director / Health Authority

 

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2377 North Stemmons Freeway, Dallas, Texas 75207-2710 | 214-819-2000