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West Nile Virus
Bird
2012
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West Nile Virus:  California - Bird
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Siskiyou County Del Norte County Modoc County Humboldt County Trinity County Lassen County Shasta County (36) Humboldt County Tehama County (5) Plumas County Butte County (53) Mendocino County (6) Glenn County (16) Sierra County Yuba County (11) Lake County (10) Nevada County (3) Colusa County (5) Placer County (59) Sutter County (29) El Dorado County (5) Alpine County Yolo County (98) Napa County (1) Sonoma County (8) Sacramento County (465) Mono County Amador County Solano County (28) Calaveras County Tuolumne County Marin County (1) San Joaquin County (56) Solano County (28) Solano County (28) Contra Costa County (66) Solano County (28) Stanislaus County (51) Sacramento County (465) Contra Costa County (66) Alameda County (15) Mariposa County Marin County (1) San Francisco County (1) San Francisco County (1) Alameda County (15) San Francisco County (1) Madera County (2) San Francisco County (1) San Francisco County (1) San Francisco County (1) San Mateo County (5) San Francisco County (1) San Francisco County (1) Merced County (42) Fresno County (25) Santa Clara County (19) Inyo County Santa Cruz County (1) San Benito County Monterey County Tulare County (54) Kings County (2) San Bernardino County (38) San Luis Obispo County (1) Kern County (14) Santa Barbara County Ventura County (38) Los Angeles County (270) Riverside County (5) Santa Barbara County Santa Barbara County Santa Barbara County Santa Barbara County Ventura County (38) Ventura County (38) Ventura County (38) Orange County (91) Los Angeles County (270) San Diego County (1) Santa Barbara County Los Angeles County (270) Imperial County Ventura County (38) Los Angeles County (270) Los Angeles County (270) 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 Dead Bird Infections by Local Jurisdiction - California, 2012
Alameda County15
Butte County53
Colusa County5
Contra Costa County66
El Dorado County5
Fresno County25
Glenn County16
Kern County14
Kings County2
Lake County10
Los Angeles County270
Madera County2
Marin County1
Mendocino County6
Merced County42
Napa County1
Nevada County3
Orange County91
Placer County59
Riverside County5
Sacramento County465
San Bernardino County38
San Diego County1
San Francisco County1
San Joaquin County56
San Luis Obispo County1
San Mateo County5
Santa Clara County19
Santa Cruz County1
Shasta County36
Solano County28
Sonoma County8
Stanislaus County51
Sutter County29
Tehama County5
Tulare County54
Ventura County38
Yolo County98
Yuba County11
Cumulative Total Entire State: 1,636
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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.