Contra Costa Mosquito & Vector Control District

05/29/2026

Most people react to mosquito saliva, which is why people’s skin can swell and itch. Mosquito saliva can also make us sick with diseases like West Nile virus, which is in Contra Costa County.

05/28/2026

Did you know: yellowjackets can bite and sting – multiple times! They can also cause serious concern to people who are allergic to yellowjacket venom.

05/22/2026

May is Lyme Disease Awareness Month. Do you know how to avoid ticks and how to protect yourself? Learn more about tick prevention: https://www.cdc.gov/ticks/prevention/index.html

05/21/2026

We are hiring for the Vector Control Aide position (seasonal).

Visit ContraCostaMosquito.gov/employment-opportunities to learn more.

05/18/2026

May is Lyme Disease Awareness Month. Did you know Contra Costa is home to four species of ticks, including one species that can potentially transmit Lyme Disease? Learn more about tick prevention: https://www.cdc.gov/ticks/prevention/index.html

05/14/2026

As May is Lyme Disease Awareness month, it's a good time to remember to take extra steps before going on a hike because you don't want to bring ticks home with you. And part of reducing the risk of ticks depends on what you wear. By wearing long sleeves and long pants, and tucking the shirt into the pants and your pant legs into your socks, you can reduce the amount of exposed skin, which reduces the chances of bringing ticks home.

East Bay Regional Parks officials are encouraging residents to be on alert for ticks in grassy and wooded areas. The western black-legged tick is the major carrier of Lyme disease in California.

Story: www.kron4.com/news/bay-area/tick-advisory-issued-by-east-bay-parks-officials/

05/14/2026

The Contra Costa County Fair is here – and so are we! Stop by our booth and ask all of your vector-related questions, or just say hi. We’ll have helpful literature, live specimens, and fun giveaways available to attendees.

05/13/2026

This mosquito lays individual eggs just above the water line of outdoor containers. DUMP OUT any amount of water weekly.

05/11/2026

May is month. Apply sunscreen first to protect from the sun’s rays, then apply an insect repellent to protect from mosquito-borne illnesses like West Nile virus. Be sure to follow the label regarding re-application times for both products.

05/08/2026

If you are attending the Pittsburg Senior Health Fair Appreciation Day event on Saturday, May 9th, we will be there! Stop by our booth and ask all of your vector-related questions, or just say hi. We’ll have helpful literature, live specimens, and fun giveaways available to attendees.