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West Nile Virus
Bird
2007
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West Nile Virus:  California - Bird
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Siskiyou County (4) Del Norte County Modoc County (1) Humboldt County (2) Trinity County (1) Lassen County (2) Shasta County (48) Humboldt County (2) Tehama County (20) Plumas County (1) Butte County (27) Mendocino County (3) Glenn County (36) Sierra County Yuba County (1) Lake County (3) Nevada County (5) Colusa County (4) Placer County (16) Sutter County (1) El Dorado County (7) Alpine County Yolo County (25) Napa County (2) Sonoma County (19) Sacramento County (142) Mono County Amador County (1) Solano County (3) Calaveras County (3) Tuolumne County (1) Marin County (4) San Joaquin County (46) Solano County (3) Solano County (3) Contra Costa County (28) Solano County (3) Stanislaus County (130) Sacramento County (142) Contra Costa County (28) Alameda County (19) Mariposa County Marin County (4) San Francisco County (1) San Francisco County (1) Alameda County (19) San Francisco County (1) Madera County (6) San Francisco County (1) San Francisco County (1) San Francisco County (1) San Mateo County (2) San Francisco County (1) San Francisco County (1) Merced County (34) Fresno County (114) Santa Clara County (83) Inyo County (1) Santa Cruz County (6) San Benito County Monterey County Tulare County (38) Kings County (9) San Bernardino County (26) San Luis Obispo County (9) Kern County (124) Santa Barbara County (1) Ventura County (15) Los Angeles County (164) Riverside County (6) Santa Barbara County (1) Santa Barbara County (1) Santa Barbara County (1) Santa Barbara County (1) Ventura County (15) Ventura County (15) Ventura County (15) Orange County (43) Los Angeles County (164) San Diego County (108) Santa Barbara County (1) Los Angeles County (164) Imperial County Ventura County (15) Los Angeles County (164) Los Angeles County (164) San Diego County (108) 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 2007 Data as of 3 am, May 20, 2008*
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, 2007
Alameda County19
Amador County1
Butte County27
Calaveras County3
Colusa County4
Contra Costa County28
El Dorado County7
Fresno County114
Glenn County36
Humboldt County2
Inyo County1
Kern County124
Kings County9
Lake County3
Lassen County2
Los Angeles County164
Madera County6
Marin County4
Mendocino County3
Merced County34
Modoc County1
Napa County2
Nevada County5
Orange County43
Placer County16
Plumas County1
Riverside County6
Sacramento County142
San Bernardino County26
San Diego County108
San Francisco County1
San Joaquin County46
San Luis Obispo County9
San Mateo County2
Santa Barbara County1
Santa Clara County83
Santa Cruz County6
Shasta County48
Siskiyou County4
Solano County3
Sonoma County19
Stanislaus County130
Sutter County1
Tehama County20
Trinity County1
Tulare County38
Tuolumne County1
Ventura County15
Yolo County25
Yuba County1
Cumulative Total Entire State: 1395
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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.