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West Nile Virus
Bird
2008
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West Nile Virus:  California - Bird
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Siskiyou County Del Norte County (1) Modoc County (1) Humboldt County (1) Trinity County (1) Lassen County Shasta County (7) Humboldt County (1) Tehama County (6) Plumas County Butte County (38) Mendocino County (1) Glenn County (17) Sierra County Yuba County Lake County (2) Nevada County (5) Colusa County (3) Placer County (4) Sutter County (2) El Dorado County (9) Alpine County Yolo County (9) Napa County (1) Sonoma County (11) Sacramento County (130) Mono County (2) Amador County (3) Solano County (7) Calaveras County (1) Tuolumne County Marin County (1) San Joaquin County (69) Solano County (7) Solano County (7) Contra Costa County (88) Solano County (7) Stanislaus County (45) Sacramento County (130) Contra Costa County (88) Alameda County (12) Mariposa County Marin County (1) San Francisco County San Francisco County Alameda County (12) San Francisco County Madera County (3) San Francisco County San Francisco County San Francisco County San Mateo County (2) San Francisco County San Francisco County Merced County (5) Fresno County (41) Santa Clara County (13) Inyo County Santa Cruz County (3) San Benito County Monterey County (6) Tulare County (51) Kings County (1) San Bernardino County (173) San Luis Obispo County (2) Kern County (10) Santa Barbara County (1) Ventura County (24) Los Angeles County (479) Riverside County (39) Santa Barbara County (1) Santa Barbara County (1) Santa Barbara County (1) Santa Barbara County (1) Ventura County (24) Ventura County (24) Ventura County (24) Orange County (639) Los Angeles County (479) San Diego County (562) Santa Barbara County (1) Los Angeles County (479) Imperial County Ventura County (24) Los Angeles County (479) Los Angeles County (479) San Diego County (562) 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 2008 Data as of 3 am, Apr 09, 2009*
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 County - California, 2008
Alameda County12
Amador County3
Butte County38
Calaveras County1
Colusa County3
Contra Costa County88
Del Norte County1
El Dorado County9
Fresno County41
Glenn County17
Humboldt County1
Kern County10
Kings County1
Lake County2
Los Angeles County479
Madera County3
Marin County1
Mendocino County1
Merced County5
Modoc County1
Mono County2
Monterey County6
Napa County1
Nevada County5
Orange County639
Placer County4
Riverside County39
Sacramento County130
San Bernardino County173
San Diego County562
San Joaquin County69
San Luis Obispo County2
San Mateo County2
Santa Barbara County1
Santa Clara County13
Santa Cruz County3
Shasta County7
Solano County7
Sonoma County11
Stanislaus County45
Sutter County2
Tehama County6
Trinity County1
Tulare County51
Ventura County24
Yolo County9
Cumulative Total Entire State: 2531
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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.