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West Nile Virus
Human
2012
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West Nile Virus:  California - Human
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Siskiyou County Del Norte County Modoc County Humboldt County Trinity County Lassen County Shasta County (1) Humboldt County Tehama County (4) Plumas County Butte County (10) Mendocino County Glenn County (7) Sierra County Yuba County (5) Lake County (1) Nevada County Colusa County (3) Placer County (12) Sutter County (8) El Dorado County Alpine County Yolo County (6) Napa County Sonoma County Sacramento County (29) Mono County Amador County Solano County (2) Calaveras County Tuolumne County Marin County San Joaquin County (13) Solano County (2) Solano County (2) Contra Costa County (4) Solano County (2) Stanislaus County (25) Sacramento County (29) Contra Costa County (4) Alameda County (2) Mariposa County Marin County San Francisco County (1) San Francisco County (1) Alameda County (2) San Francisco County (1) Madera County (1) San Francisco County (1) San Francisco County (1) San Francisco County (1) San Mateo County San Francisco County (1) San Francisco County (1) Merced County (13) Fresno County (24) Santa Clara County Inyo County Santa Cruz County San Benito County Monterey County (1) Tulare County (7) Kings County (4) San Bernardino County (31) San Luis Obispo County Kern County (25) Santa Barbara County Ventura County (4) Los Angeles County (148) Riverside County (19) Santa Barbara County Santa Barbara County Santa Barbara County Santa Barbara County Ventura County (4) Ventura County (4) Ventura County (4) Orange County (39) Los Angeles County (148) San Diego County (1) Santa Barbara County Los Angeles County (148) Imperial County (1) Ventura County (4) Los Angeles County (148) Los Angeles County (148) San Diego County (1) 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, Dec 11, 2012*
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 Human Disease Cases by Local Jurisdiction - California, 2012
Alameda County2
Butte County10
Colusa County3
Contra Costa County4
Fresno County24
Glenn County7
Imperial County1
Kern County25
Kings County4
Lake County1
Los Angeles County148
Madera County1
Merced County13
Monterey County1
Orange County39
Placer County12
Riverside County19
Sacramento County29
San Bernardino County31
San Diego County1
San Francisco County1
San Joaquin County13
Shasta County1
Solano County2
Stanislaus County25
Sutter County8
Tehama County4
Tulare County7
Ventura County4
Yolo County6
Yuba County5
Cumulative Total Entire State: 451
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Map Legend
* Data demonstrates local jurisdiction of residence and not necessarily the locale where the infection was acquired.
** States and counties in yellow are those in which virus activity has been reported historically, but no positive test results have been reported or no surveillance has occurred this year.