Category Archives: West Nile

Thursday, August 23, 2018 – Adult Mosquito Control to Take Place in Discovery Bay and Martinez Waterfront

Due to the high number of mosquitoes and the detection of West Nile virus in the area, the Contra Costa Mosquito & Vector Control District will be using truck-mounted, ultra-low volume sprayers to control adult mosquitoes in two locations. DATE: … Continue reading

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New detections of West Nile Virus in California horses

A dangerous disease, west Nile virus, has returned to California this summer.  Last week, four horses were diagnosed with the disease – two in Sacramento County and one each in Kern and Placer counties. Two of the horses have been euthanized … Continue reading

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WEST NILE VIRUS CONFIRMED IN MOSQUITOES, BIRDS IN CONTRA COSTA COUNTY

The Contra Costa Mosquito & Vector Control District confirmed today that one group of mosquitoes from Oakley and three dead birds have tested positive for West Nile virus. The birds were from Brentwood, Antioch, and Pleasant Hill. “The mosquitoes and … Continue reading

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Dead Bird Hotline Open for Phone Reports

Dead Bird Reports Help Find Areas Where West Nile Virus May be Transmitted California’s statewide Dead Bird Hotline is open and accepting dead bird reports by telephone. Online reports are accepted year-round. The hotline is an important part of the … Continue reading

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Are There More Mosquitoes This year?

Mosquito counts at this time are higher than they have been during the past five years of drought in Contra Costa County. The drought produced fewer mosquitoes, but greater virus potential. This year there are plenty of water sources. Those, … Continue reading

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When Will Spraying for Mosquitoes Start in Contra Costa County? This is the First Really Wet Winter Since the Drought.

Our district’s mosquito surveillance and control program is year round. Most of our mosquito control is completed when the mosquitoes are in their larval form (in the water) when they are more easily and efficiently controlled. However, once mosquitoes become … Continue reading

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14 Things to know About TICKS

Test your knowledge about ticks Ticks surpass all of the arthropods in the number and variety of diseases they can transmit to domestic animals. Only mosquitoes transmit more diseases to humans. Ticks are small arachnids. Although they’re commonly mistaken as … Continue reading

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