Current Virus Activity
Current West Nile virus activity in Contra Costa County.
Current Spraying Info
2018 Virus Activity To Date
News and Current Events
Official announcements and articles highlighting important vector and vector-borne related news.
West Nile Virus Confirmed in Mosquitoes in Contra Costa County
Invasive Mosquito Species of California
While not currently in Contra Costa county, two invasive mosquito species that can transmit Zika, dengue, yellow fever, and chikungunya are in other parts of California.
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.
Skunk Inspection Specifics
Frequently Asked Questions
Get all the answers to our most frequently asked questions.
View our FAQ
Stay Informed and Healthy
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