Orange County Vector Control District

The Orange County Mosquito and Vector Control District (OCMVCD) has issued a public warning regarding an increased risk of flea-borne typhus in the City of Santa Ana. This potentially fatal…

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The Orange County Mosquito and Vector Control District (OCMVCD) has confirmed that mosquito samples collected in Newport Beach have tested positive for West Nile virus (WNV). This marks the first…

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The Orange County Mosquito and Vector Control District (OCMVCD) has identified an increased risk of flea-borne typhus in the City of Santa Ana. Flea-borne typhus is a potentially fatal disease…

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Garden Grove, Calif. – The Orange County Mosquito and Vector Control District (OCMVCD) has detected elevated West Nile Virus (WNV) activity in the Cities of Anaheim, Orange, Huntington Beach, Westminster,…

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Based on mosquito abundance and surveillance data, Orange County Mosquito and Vector Control District staff will conduct residential adult mosquito control in the City of Santa Ana on September 10th,…

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The Orange County Mosquito and Vector Control District (OCMVCD) has confirmed that mosquitoes collected in the City of Santa Ana have tested positive for West Nile virus (WNV). These are…

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The Orange County Vector Control District has announced upcoming mosquito control efforts to address an increase in mosquito abundance and the risk of mosquito-borne disease in the cities of Anaheim,…

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The Orange County Mosquito and Vector Control District (OCMVCD) has confirmed that mosquitoes collected in the cities of Anaheim and Garden Grove have tested positive for West Nile virus (WNV).…

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SACRAMENTO – June 11, 2025 – Thanks to the cooperation and committed efforts of Orange County area residents and local agricultural officials, the California Department of Food and Agriculture (CDFA), in…

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Based on mosquito abundance and surveillance data, Orange County Mosquito and Vector Control District staff will conduct residential adult mosquito control in the cities of Brea, Santa Ana, Garden Grove,…

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The Orange County Mosquito and Vector Control District will be conducting an Ultra-Low Volume (ULV) adulticide treatment to address the increase in mosquito abundance and risk of mosquito-borne disease in…

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Garden Grove, Calif. – The Orange County Mosquito and Vector Control District (OCMVCD) has confirmed that mosquitoes collected in the City of Santa Ana have tested positive for West Nile virus…

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It is National Mosquito Control Awareness Week! Don’t forget to protect yourself and your family from mosquito bites as you head outdoors. Swipe through for some tips from Orange County…

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The Orange County Mosquito and Vector Control District (OCMVCD) announced that it will be conducting residential mosquito control applications via truck in Santa Ana. The treatment area will be located…

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The Orange County Mosquito and Vector Control District (OCMVCD) has reported the presence of West Nile virus in mosquitoes in Santa Ana. Starting on August 10, the OCMVCD will conduct…

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