Current Virus Activity
Current West Nile virus activity in Contra Costa County.
Current Spraying Info
2017 Virus Activity To Date
News and Media Releases
Official announcements highlighting important vector and vector-borne related news.
Are There More Mosquitoes This Year?
Stay Informed and Healthy
Get our Mosquito Bytes Newsletter, adult mosquito spray notifications, and media releases delivered automatically.
In a Minute Videos
These one-minute videos take you right to the action as we control the insects and animals capable of transmitting disease/causing harm.
Why We Need Your Mosquito Sample
Frequently Asked Questions
Get all the answers to our most frequently asked questions.
View our FAQ
Provide Feedback/Request Free Presentation
We want to hear from you. Your comments are critical to our continued success. Interested in receiving a FREE presentation?
Click here to learn more.
Provide General Comments
Provide Feedback Regarding Service We Provided You