Category Archives: Mosquito

Even Though It’s Fall, Mosquito Season Isn’t Over

Act Now to Reduce the Risk of West Nile Virus by Avoiding Mosquito Bites Just because it’s fall, it does not mean mosquito season is over because mosquitoes, and West Nile virus (WNV) in particular, thrive in warm temperatures. And … Continue reading

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WNV Risk in Contra Costa County Continues as More Birds and Sentinel Chickens Test Positive

The Contra Costa Mosquito & Vector Control District (District) has confirmed two sentinel chickens and three dead birds have tested positive for West Nile Virus (WNV). Two birds are from Brentwood, one is from Concord. This is the first bird … Continue reading

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First sign of West Nile virus confirmed in mosquitoes in Contra Costa County – Mosquitoes near Byron Test Positive

A group of mosquitoes that tested positive for West Nile virus has signaled the first sign of virus activity in Contra Costa County this year. The infected mosquitoes were caught in traps in an agricultural area near Byron. District employees … Continue reading

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3 Tips to Reduce the Risk of Mosquitoes and West Nile Virus this Summer

Everyday, the employees of the Contra Costa Mosquito & Vector Control District work to protect public health in Contra Costa County. As summertime is prime time for mosquitoes, the main focus of our work right now is on reducing the risk … Continue reading

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How to Reduce the Risk of West Nile virus by Reporting Dead Birds

During the current pandemic, there are daily reports on the new things scientists are learning about the virus (SARS-CoV-2) that causes COVID-19 disease because COVID-19 is so new. Here in Contra Costa County, there is already a virus that is neither new … Continue reading

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COVID-19 and the CONTRA COSTA MOSQUITO & VECTOR CONTROL DISTRICT

How the District Continues to Protect Public Health With this week’s order from the acting Contra Costa County Health Director that county residents are to shelter at their place of residence except to provide or receive certain essential services, many folks … Continue reading

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Be A West Nile Watcher

Reduce the Risk of West Nile Virus–Be on the Lookout for Mosquitoes and Dead Birds   First come the hot days of summer, then the warm summer nights soon follow–and those warm nights actually increase the risk of West Nile virus … Continue reading

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Prevent Mosquito Bites

Dump Standing Water Today Rain, rain go away! If you listen closely, you just might hear your neighbors singing this song as winter, followed by spring rainfall placed Northern California at 104 percent of normal precipitation. And where there is … Continue reading

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A Scientist Explains Why Mosquitoes Bite Some People More Than Others

From Science Alert by Richard Halfpenny, THE CONVERSATION 19 AUG 2018 Surprisingly few of the more than 3,000 mosquito species actually specialise in biting humans. Instead, most are opportunistic feeders – feeding when they are able and from lots of … Continue reading

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Fight The NEW Bite – Stop the Invasion

  Take Action Now to Prevent Invasive Mosquito Species in Contra Costa County Just two counties now stand between Contra Costa County and mosquitoes capable of transmitting Zika, dengue fever, yellow fever and chikungunya viruses. It’s time to Fight the … Continue reading

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Test your knowledge of Mosquitoes

How Much Do You Know About Invasive Mosquito Species? Click here to take this quick quiz to test your knowledge of mosquitoes. See what you know about Invasive Mosquito Species and how they could impact our quality of life here … Continue reading

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Four Important Steps to Take Now to Prevent Mosquitoes Later

This winter was so dry, scientists said California’s chance of having a “normal water year” was down to nearly 30 percent. Then we experienced Miracle March 2018, and even more rain has continued off and on. Now there are plenty … Continue reading

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10 Tips to Reduce the Risk of Tick-borne Disease

The seasons change and spring’s sunshine and warmer temperatures make the outdoors inviting. You get a whiff of fresh air and the next thing you know, you’re searching for your hiking boots. Before you head outdoors, check out these tips … Continue reading

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July Means Heat and Heat Means Mosquitoes

Mosquitoes and heat go together like ice cream and cones, but not in a good way. Most mosquitoes, including the kind that can transmit West Nile virus, flourish in hot weather. They can develop from egg to adult in as … Continue reading

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Will You Spray my Yard for Mosquitoes?

A Closer Look at the District’s Residential Mosquito Service The District does not spray or fog residential yards for adult mosquitoes. Since mosquito problems are rarely limited to a single property, fogging for adult mosquitoes is usually conducted at a … Continue reading

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Why We Need Your Mosquito Sample

Swat a mosquito and save it for us If you are a Contra Costa County resident and are being bitten by mosquitoes, you can contact the District at 925-685-9301 or visit us online to request a free inspection. We need … Continue reading

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