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.
Which Neglected Pool Produces More Mosquitoes?
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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, When, and Where to Place Yellowjacket Traps
Frequently Asked Questions
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