West Nile virus is a viral disease of birds that is transmitted from bird to bird by way of a mosquito bite. It can occasionally cause meningoencephalitis (inflammation of the brain and spinal cord) in susceptible people or animals that are bitten by infected mosquitoes. Most people who contract the virus will have few or no symptoms and will recover completely. About 1 in 150 people who contract the disease may develop serious complications. Elderly people are more at risk of such complications. There is currently no vaccine or specific treatment available. If you think you or a family member may have West Nile virus, please contact your physician.
While the Contra Costa Mosquito & Vector Control District cannot test every bird that is collected for West Nile virus, reporting them alone are crucial to our surveillance efforts. Click here to report a dead bird.
Out of the 23 species of mosquitoes found in Contra Costa County, two species are known transmitters of West Nile Virus.
Contra Costa Mosquito And Vector Control District (the "District") is committed to ensuring that its services are accessible to all
members of the public. As part of this commitment, the District strives to provide an accessible website compatible with
the Web Content Accessibility Guidelines (WCAG) version 2.1, AA, and commercial screen reading software. Features of the
website are created to allow individuals with vision and other impairments to understand and use the website to the same
degree as someone without disabilities.
If you need any special assistance or accommodations:
Contact our compliance support team via telephone at: (888) 765-1970
Ongoing Compliance Information
Compliance Coordinator
The District has designated a Compliance Coordinator for website disability-related accommodations. The Compliance
Coordinator has received training in website accessibility and updates the site in accordance with those best
practices and requirements.
Compliance Procedures
The District is working to ensure all website content complies with the Americans with Disabilities Act
and controlling State laws. In an ongoing effort to continually improve and remediate accessibility issues,
the website is regularly scanned to ensure ongoing compliance, and timely changes are made to any inaccessible
content if found.
Accessible Documents Policy
The District is committed to providing all documents hosted on the website in an accessible format or making accessible
alternatives available.
Linked Documents and Third Parties
Please note that this site may link out to third-party websites that do not have accessible content. This site may
also include documents provided by third parties. While we cannot control the accessibility of content provided by
third parties, we are happy to assist any member of the public with reading and accessing content on our site.
Report a Website Accessibility Issue
We are committed to your ability to access all content, and we will respond to all requests in a timely manner.
If you need assistance or accommodations while accessing content on this website, please contact our Compliance
Coordinator via the form below:
