Orange County Vector Control District

The OC Health Care Agency has confirmed that an Anaheim resident tested positive for West Nile virus (WNV), marking the first human infection reported in Orange County this year. Local…

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The Orange County Mosquito and Vector Control District (OCMVCD) has officially confirmed that mosquito samples infected with West Nile Virus (WNV) are spreading across the region. Positive samples were detected…

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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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