West Nile virus-positive dead birds
by County and City California, 2023

(2024-04-18) - Source: http://westnile.ca.gov

Alameda County
alameda1
Alameda6
albany1
Castro Valley1
Dublin1
fremont4
Fremont13
Hayward3
livemore1
Livermore28
newark3
Newark5
Oakland1
Pleasanton6
San Lorenzo3
Union City3
Total Positives for Alameda County: 80
 
Butte County
Bangor1
Chico1
Total Positives for Butte County: 2
 
Colusa County
Grimes2
Total Positives for Colusa County: 2
 
Contra Costa County
Alamo1
Antioch3
Brentwood7
Clayton4
Clyde1
Concord33
Crockett2
Danville8
El Cerrito1
El Sobrante1
Kensington1
Martinez6
Oakley1
Pacheco1
Pittsburg1
Pleasant Hill4
Richmond2
Rodeo1
San Ramon2
Walnut Creek15
Total Positives for Contra Costa County: 95
 
El Dorado County
Cameron Park1
Lotus1
Rescue2
Total Positives for El Dorado County: 4
 
Fresno County
Fresno1
Total Positives for Fresno County: 1
 
Lake County
Clearlake1
Clearlake Oaks1
Cobb1
Kelseyville1
Lakeport3
Upperlake1
Total Positives for Lake County: 8
 
Los Angeles County
Canoga Park2
Cerritos1
Covina11
Culver City1
Glendale2
Glendora1
Lakewood4
La Verne1
Long Beach5
Los Angeles5
Manhattan Beach1
Marina Del Rey1
Montebello1
Pacoima1
Palmdale1
Pomona1
San Dimas1
Temple City1
Tujunga1
Whittier1
Woodland Hills1
Total Positives for Los Angeles County: 44
 
Madera County
Madera1
Total Positives for Madera County: 1
 
Marin County
San Rafael2
Total Positives for Marin County: 2
 
Napa County
American Canyon1
Napa2
St Helena1
Total Positives for Napa County: 4
 
Nevada County
Grass Valley1
Total Positives for Nevada County: 1
 
Orange County
Anaheim1
Tustin1
Total Positives for Orange County: 2
 
Placer County
Foresthill1
Granite Bay1
Lincoln4
Loomis1
Newcastle1
Rocklin4
Roseville31
Total Positives for Placer County: 43
 
Riverside County
Corona30
Mira Loma2
Murrieta2
Norco21
Riverside14
Total Positives for Riverside County: 69
 
Sacramento County
Antelope7
Carmichael14
Citrus Heights5
elk grove1
Elk Grove19
Elverta7
Fair Oaks3
Folsom3
Foothill Farms1
Galt3
Gold River1
Orangevale7
Rancho Cordova3
Rio Linda5
Sacramento111
Walnut Grove1
Wilton5
Total Positives for Sacramento County: 196
 
San Benito County
Hollister1
Total Positives for San Benito County: 1
 
San Bernardino County
Chino1
Ontario3
Rancho Cucamonga4
Redlands1
San Bernardino1
Upland1
Total Positives for San Bernardino County: 11
 
San Diego County
el cajon1
escondido1
Escondido3
Fallbrook1
la mesa1
La Mesa1
ramona1
Ramona1
san diego1
San Diego2
Valley Center1
Total Positives for San Diego County: 14
 
San Joaquin County
Acampo1
French Camp1
Lodi1
Manteca1
Stockton9
Thornton1
Tracy6
Total Positives for San Joaquin County: 20
 
San Luis Obispo County
Atascadero1
Total Positives for San Luis Obispo County: 1
 
San Mateo County
Belmont1
Burlingame1
Foster City1
Menlo Park5
Redwood City5
Redwood Shores1
San Carlos1
Total Positives for San Mateo County: 15
 
Santa Clara County
Campbell5
Gilroy1
Los Altos5
Los Altos Hills1
Los Gatos1
Milpitas1
Monte Sereno1
Morgan Hill4
Mountain View3
Palo Alto23
San Jose52
San Martin1
Santa Clara7
Saratoga4
Sunnyvale8
Total Positives for Santa Clara County: 117
 
Shasta County
Cottonwood1
Redding1
Total Positives for Shasta County: 2
 
Solano County
Davis2
Dixon3
Fairfield6
Suisun City1
Vacaville5
Vallejo1
Total Positives for Solano County: 18
 
Sonoma County
Cotati1
Petaluma5
Santa Rosa10
Total Positives for Sonoma County: 16
 
Stanislaus County
Modesto1
Newman1
Oakdale2
Riverbank1
Turlock1
Total Positives for Stanislaus County: 6
 
Sutter County
Live Oak1
Nicolaus1
Yuba City4
Total Positives for Sutter County: 6
 
Tulare County
Exeter1
Visalia4
Total Positives for Tulare County: 5
 
Ventura County
Newbury Park1
Simi Valley1
Thousand Oaks1
Ventura1
Total Positives for Ventura County: 4
 
Yolo County
Capay1
Davis43
Madison1
West Sacramento9
Winters1
Woodland12
Total Positives for Yolo County: 67

Total Positives for all Counties: 857

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