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West Nile Virus
Mosquito
2012
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West Nile Virus:  California - Mosquito
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Siskiyou County Del Norte County Modoc County Humboldt County Trinity County Lassen County Shasta County (17) Humboldt County Tehama County Plumas County Butte County (27) Mendocino County Glenn County (4) Sierra County Yuba County (15) Lake County (23) Nevada County Colusa County Placer County (108) Sutter County (19) El Dorado County Alpine County Yolo County (154) Napa County (1) Sonoma County (3) Sacramento County (487) Mono County Amador County Solano County (3) Calaveras County Tuolumne County Marin County San Joaquin County (169) Solano County (3) Solano County (3) Contra Costa County (19) Solano County (3) Stanislaus County (210) Sacramento County (487) Contra Costa County (19) Alameda County Mariposa County Marin County San Francisco County San Francisco County Alameda County San Francisco County Madera County (14) San Francisco County San Francisco County San Francisco County San Mateo County San Francisco County San Francisco County Merced County (4) Fresno County (147) Santa Clara County (3) Inyo County Santa Cruz County San Benito County Monterey County Tulare County (144) Kings County (102) San Bernardino County (58) San Luis Obispo County Kern County (571) Santa Barbara County Ventura County (2) Los Angeles County (339) Riverside County (133) Santa Barbara County Santa Barbara County Santa Barbara County Santa Barbara County Ventura County (2) Ventura County (2) Ventura County (2) Orange County (69) Los Angeles County (339) San Diego County Santa Barbara County Los Angeles County (339) Imperial County (4) Ventura County (2) Los Angeles County (339) Los Angeles County (339) San Diego County Navigate to Arizona page Navigate to Idaho page Navigate to Nevada page Navigate to Oregon page Navigate to Utah page Navigate to Wyoming page
Map Scalebar 350 km
Cumulative 2012 Data as of 3 am, May 14, 2013*
These data are provisional and may be revised or adjusted in the future.
[Epi curve - Vertical bar graph showing number of incidents for each of 52 weeks]
Cumulative Mosquito Infections by Local Jurisdiction - California, 2012
Butte County27
Contra Costa County19
Fresno County147
Glenn County4
Imperial County4
Kern County571
Kings County102
Lake County23
Los Angeles County339
Madera County14
Merced County4
Napa County1
Orange County69
Placer County108
Riverside County133
Sacramento County487
San Bernardino County58
San Joaquin County169
Santa Clara County3
Shasta County17
Solano County3
Sonoma County3
Stanislaus County210
Sutter County19
Tulare County144
Ventura County2
Yolo County154
Yuba County15
Cumulative Total Entire State: 2,849
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Map Legend
* States and counties in yellow either did not perform surveillance or did not report any positive test results from their surveillance.