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West Nile Virus
Human
2014
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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 (1) Plumas County Butte County (16) Mendocino County Glenn County (8) Sierra County Yuba County (3) Lake County (1) Nevada County Colusa County (2) Placer County (1) Sutter County (2) El Dorado County Alpine County Yolo County Napa County Sonoma County Sacramento County (4) Mono County Amador County Solano County (1) Calaveras County Tuolumne County Marin County San Joaquin County (3) Solano County (1) Solano County (1) Contra Costa County (1) Solano County (1) Stanislaus County (24) Sacramento County (4) Contra Costa County (1) Alameda County Mariposa County Marin County San Francisco County San Francisco County Alameda County San Francisco County Madera County (2) San Francisco County San Francisco County San Francisco County San Mateo County San Francisco County San Francisco County Merced County Fresno County (26) Santa Clara County (6) Inyo County Santa Cruz County San Benito County Monterey County Tulare County (7) Kings County (2) San Bernardino County (4) San Luis Obispo County Kern County (5) Santa Barbara County Ventura County Los Angeles County (29) Riverside County (1) Santa Barbara County Santa Barbara County Santa Barbara County Santa Barbara County Ventura County Ventura County Ventura County Orange County (83) Los Angeles County (29) San Diego County (2) Santa Barbara County Los Angeles County (29) Imperial County (2) Ventura County Los Angeles County (29) Los Angeles County (29) San Diego County (2) 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 2014 Data as of 3 am, Sep 17, 2014*
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, 2014
Butte County16
Colusa County2
Contra Costa County1
Fresno County26
Glenn County8
Imperial County2
Kern County5
Kings County2
Lake County1
Los Angeles County29
Madera County2
Orange County83
Placer County1
Riverside County1
Sacramento County4
San Bernardino County4
San Diego County2
San Joaquin County3
Santa Clara County6
Shasta County1
Solano County1
Stanislaus County24
Sutter County2
Tehama County1
Tulare County7
Yuba County3
Cumulative Total Entire State: 237
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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.