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The Aedes aegypti (the yellow fever mosquito) and Aedes albopictus (the Asian tiger mosquito) have been detected in Orange County. These mosquitoes are not native to California and can transmit Zika, dengue, chikungunya and yellow fever. Learn what you can do to prevent an infestation.

The mission of the Orange County Mosquito and Vector Control District is to educate and protect Orange County from vectors and prevent vector-borne diseases in an environmentally responsible manner.

The District is frequently asked to assist a resident with a problem caused by a pest not controlled by the District. We limit our activities to those species determined to be vectors by the California Health and Safety Code. The District currently has control programs for mosquitoes, rats and Red Imported Fire Ants.