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Northwest Mosquito and Vector Control District

1966 Compton Avenue, Corona, CA  92881

Telephone: 951-340-9792 Fax: 951-340-2515

Website: www.northwestmvcd.org


Invasive Aedes aegypti Mosquitoes Detected in Western Riverside County

Corona, CA- July 20, 2016

Northwest Mosquito and Vector Control District has detected invasive yellow fever mosquitoes (Aedes aegypti) in Western Riverside County. This species was recently found on July 19, 2016, in the city of Corona near Village Grove Lake.  This is the third detection in the District where the yellow fever mosquito has been found.  Please inform the Northwest Mosquito and Vector Control District if you experience day-biting mosquitoes by calling 951-340-9792. 

Aedes aegypti is not native to California. It is a small black and white day-biting mosquito that prefers to feed on humans. This mosquito is capable of transmitting several viruses, including yellow fever, dengue, Zika and chikungunya viruses. While these viruses are not currently transmitted in California, there is potential for them to be introduced by infected international travelers.  In this age of global commerce, Aedes aegypti has found several paths into California.  It has been detected in 12 counties and over 56 cities throughout the state.  View the California Department of Public Health map at: https://www.cdph.ca.gov/HealthInfo/discond/Documents/AedesDistributionMap.pdf

Northwest Mosquito and Vector Control District will be conducting intensive surveillance in areas surrounding the point of discovery to assess its distribution. These efforts will include door-to-door inspection of residential properties for these mosquitoes and the standing water habitats where mosquito larvae can develop.  The District will take appropriate measures to eliminate mosquitoes and mosquito larval sources as necessary. 

The Aedes aegypti mosquito is different from native California mosquitoes.  It lays its eggs just above the water surface in small containers, such as flower pots, plant saucers, pet bowls, bottles, and bird baths. As these mosquitoes can breed in amounts of water as small as a bottle cap, residents are reminded to survey their property and immediately eliminate all standing water.

Residents can reduce the chances of being bitten by Aedes aegypti or other mosquitoes by taking the following precautions:

Apply insect repellents that contain DEET, picaridin, oil of lemon eucalyptus or IR 3535 and follow label instructions.

Make sure that doors and windows have tightfitting screens to keep out mosquitoes and repair or replace screens with tears or holes.

Eliminate standing water and containers that can hold water from around the home.

Report neglected swimming pools and standing water sources by calling Northwest Mosquito and Vector Control District.

Residents experiencing mosquito bites during the day should report them to the Northwest Mosquito and Vector Control District at (951) 340-9792 or by visiting www.northwestmvcd.org.


William Van Dyke

Northwest Mosquito and Vector Control District
Public Information and Technology Officer
1966 Compton Avenue
Corona, CA.  92881