There is no evidence that West Nile virus spreads from animal to person or from person to person except in rare cases through blood product transfusion, tissue transplantation, or mother to baby. Twenty percent of infected people develop a typically mild form of the disease West Nile fever , which may include fever, headache, body aches, and occasionally a skin rash on the trunk of the body and swollen lymph glands.
Only about one out of people infected with West Nile virus will develop the more severe form of the disease West Nile neuroinvasive disease , which may affect the brain and spinal cord. The signs and symptoms of severe disease may include headache, high fever, neck stiffness, stupor, disorientation, coma, tremors, convulsions, muscle weakness, and paralysis.
The incubation period of West Nile virus in humans is two to 14 days. Signs and symptoms of mild disease may last a few days. Signs and symptoms of severe disease may last several weeks or months, although neurological effects may be permanent. Rarely, death can occur. Each mosquito season May-September you will notice a number of signs in our medians, major intersections, and parks reminding folks of the "Four D's", Defend, Dress, Dusk through Dawn, and Drain.
By following these simple steps you can significantly reduce your risk. S urveillance - Carrollton has established fourteen fixed testing sites to monitor both mosquito counts and West Nile Virus activity within our local mosquito population. Each week these traps are set and collected. The collected mosquitoes trapped at each location are prepared for shipment, and each "pool" of mosquitoes is sent to the Dallas County Health and Human Services Vector Control Lab and the Texas Department of State Health Services Arbovirus Lab for species identification and disease testing.
You may also review a map of our fixed testing sites by clicking here. T reat standing water - Our teams in Animal Services and Community Services work together to identify areas of standing water that may become breeding sites for mosquitoes.
These sites include low spots on undeveloped property, blocked creeks, drainage easements, and abandoned swimming pools. These areas are treated with a larvicide that will prevent larval mosquitoes from transitioning to the adult stage where they can transmit the West Nile Virus. We use mosquito dunks for this application, a product available to the general public that may be purchased at your local hardware store.
It is important to note that we do not treat water standing on streets and sidewalks. S praying - ground spraying of a permethrin-based product is reserved for areas where we have collected mosquitoes that have tested positive for West Nile Virus. We do not spray areas based on complaints as over-exposing mosquitoes to our selected pesticide may result in our local mosquito population developing a resistance making our spraying less effective.
To send additional questions or comments please click here. If you would like to speak with a member of our staff, please call Please enable JavaScript in your browser for a better user experience. On the Horizon Newsletter Public Safety. Learn more about doing business in the City of Carrollton. Jump to subpage West Nile Virus Zika Virus. Click here to view the map of our fourteen fixed testing sites. Minus Related Pages. CDC Disease Maps. Links with this icon indicate that you are leaving the CDC website.
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