West Nile Virus Information

For information on how to control mosquitoes and avoid contact with the West Nile Virus click here.

What is West Nile Virus?

West Nile Virus is an arbovirus that causes encephalities.  Arboviruses including West Nile Virus are transmitted by blood-feeding insects such as mosquitoes.

Where did West Nile Virus come from?

West Nile Virus was first identified in the West Nile district of Uganda in 1937, and has since been found in other parts of Africa, Eastern Europe, West Asia, the Middle East and the United States. 

How is West Nile Virus transmitted?           

Mosquitoes draw the virus from infected birds and transmit it to animals and humans through bites.  West Nile Virus is not transmitted directly from animal to person, person to animal, animal to animal, or person to person.

What is the risk of a person contracting West Nile Virus?

The risk of becoming ill from a single mosquito bite is extremely low.  In areas where mosquitoes carry the virus, less than 1% are actually infected.  Even if mosquitoes are infected, less than 1% of people bitten and affected by those mosquitoes become severely ill.

What is the City of Carrollton doing to manage issues related to the West Nile Virus?

The City of Carrollton has implemented a plan that includes surveillance, public education, source reduction and spraying.  The City of Carrollton has been approved by the Texas Department of Health to conduct on-site testing of birds that are considered high risk for West Nile Virus.  These birds include Blue Jays, Crows and Hawks.

The City of Carrollton has also teamed with the Texas Department of Health and Dallas County Health and Human Services to share information related to the West Nile Virus.  By sharing resources, we are better able to track surveillance data and plan appropriate responses to case investigation and confirmed cases.

When does the City of Carrollton spray for mosquitoes?

The map below outlines the days each area will be sprayed for mosquitoes.  Spaying is conducted on request basis only and will only be scheduled in your area on the days shown below, unless it is determined additional spraying is in the best interest of public health.  Requests for spraying can be made by contacting the Animal Services Division at (972)-466-3420.

To send additional questions or comments please click here.  If you would like to speak with a member of our staff please call 972-466-3420.