West Nile virus-positive dead birds
by County and City California, 2018

(2024-10-13) - Source: http://westnile.ca.gov

Alameda County
Castro Valley1
Fremont4
Hayward2
Livermore4
Newark2
Oakland1
Union City6
Total Positives for Alameda County: 20
 
Butte County
Chico1
Magalia1
Oroville2
Total Positives for Butte County: 4
 
Contra Costa County
Antioch1
Brentwood4
Concord1
Discovery Bay5
Martinez1
Oakley1
Total Positives for Contra Costa County: 13
 
El Dorado County
El Dorado Hills1
South Lake Tahoe1
Total Positives for El Dorado County: 2
 
Humboldt County
Eureka1
Total Positives for Humboldt County: 1
 
Kern County
Bakersfield1
Total Positives for Kern County: 1
 
Los Angeles County
Agoura Hills1
Beverly Hills1
Culver City1
Glendale1
Lancaster1
Los Angeles2
North Hollywood1
Santa Monica1
Sherman Oaks3
Sunland1
Sun Valley1
Sylmar1
Tarzana1
Venice2
Walnut1
Total Positives for Los Angeles County: 19
 
Orange County
Anaheim7
Cypress1
Fullerton1
Garden Grove1
Orange2
Santa Ana4
Tustin2
Total Positives for Orange County: 18
 
Placer County
Auburn1
Elverta1
Granite Bay4
Lincoln2
Loomis4
Newcastle1
Pleasant Grove1
Rocklin6
Roseville24
Total Positives for Placer County: 44
 
Riverside County
Riverside6
Total Positives for Riverside County: 6
 
Sacramento County
Antelope2
Carmichael12
Citrus Heights10
Elk Grove37
Elverta2
Fair Oaks10
Folsom2
Foothill Farms2
Freeport1
Galt5
Gold River1
Isleton1
Mcclellan1
North Highlands2
Orangevale4
Rancho Cordova8
Rancho Murieta1
Rio Linda5
Rosemont1
Sacramento124
Wilton10
Total Positives for Sacramento County: 241
 
San Diego County
Chula Vista1
Total Positives for San Diego County: 1
 
San Joaquin County
Escalon1
Lodi2
Manteca1
Stockton5
Tracy6
Woodbridge1
Total Positives for San Joaquin County: 16
 
San Mateo County
East Palo Alto1
Foster City1
Menlo Park2
South San Francisco1
Total Positives for San Mateo County: 5
 
Santa Clara County
Campbell1
Cupertino1
Mountain View2
Palo Alto6
San Jose15
San Martin2
Santa Clara8
Saratoga2
Stanford1
Sunnyvale18
Total Positives for Santa Clara County: 56
 
Santa Cruz County
Davenport1
Santa Cruz1
Total Positives for Santa Cruz County: 2
 
Shasta County
Palo Cedro2
Redding3
Total Positives for Shasta County: 5
 
Stanislaus County
Modesto1
Total Positives for Stanislaus County: 1
 
Sutter County
Yuba City4
Total Positives for Sutter County: 4
 
Tuolumne County
Sonora1
Total Positives for Tuolumne County: 1
 
Yolo County
Clarksburg1
Davis18
West Sacramento14
Woodland7
Yolo1
Total Positives for Yolo County: 41

Total Positives for all Counties: 501

Source: Vector-Borne Disease Section, California Department of Public Health