2012 WNV Activity by County

(2018-12-12) - Source: http://www.westnile.ca.gov

Total Positive Counties: 42

CountyHuman CasesHorsesDead BirdsMosquito SamplesSentinel Chickens
State Totals4792216442849540
Alameda2-15--
Alpine-----
Amador-----
Butte101532745
Calaveras-1---
Colusa3-5-6
Contra Costa4-66197
Del Norte-----
El Dorado--5--
Fresno24325147-
Glenn711648
Humboldt-----
Imperial1--410
Inyo-----
Kern2521457174
Kings3-2102-
Lake1-10234
Lassen-----
Los Angeles163-271339135
Madera31214-
Marin--1--
Mariposa-----
Mendocino--6--
Merced13142414
Modoc-----
Mono-----
Monterey1----
Napa--11-
Nevada--3--
Orange42-9269-
Placer12-601088
Plumas-----
Riverside19-513363
Sacramento30246648736
San Benito-----
San Bernardino32-395845
San Diego1-1--
San Francisco1-1--
San Joaquin13258169-
San Luis Obispo--1--
San Mateo--5--
Santa Barbara-----
Santa Clara--203-
Santa Cruz--1--
Shasta1536176
Sierra-----
Siskiyou-----
Solano2-2832
Sonoma--831
Stanislaus261512108
Sutter8-291938
Tehama4-5--
Trinity-----
Tulare7-5414411
Tuolumne-----
Ventura7-3822
Yolo101981544
Yuba41111513
State Totals4792216442849540