2017 WNV Activity by County
Year To Date (Weeks 1 - 9)

(2018-12-15) - Source: http://www.westnile.ca.gov

Total Positive Counties: 3

CountyHuman CasesHorsesDead BirdsMosquito SamplesSentinel Chickens
State Totals00300
Alameda-----
Alpine-----
Amador-----
Butte-----
Calaveras-----
Colusa-----
Contra Costa-----
Del Norte-----
El Dorado-----
Fresno-----
Glenn-----
Humboldt-----
Imperial-----
Inyo-----
Kern-----
Kings-----
Lake-----
Lassen-----
Los Angeles-----
Madera-----
Marin-----
Mariposa-----
Mendocino-----
Merced-----
Modoc-----
Mono-----
Monterey-----
Napa-----
Nevada-----
Orange--1--
Placer-----
Plumas-----
Riverside-----
Sacramento-----
San Benito-----
San Bernardino-----
San Diego--1--
San Francisco-----
San Joaquin-----
San Luis Obispo-----
San Mateo--1--
Santa Barbara-----
Santa Clara-----
Santa Cruz-----
Shasta-----
Sierra-----
Siskiyou-----
Solano-----
Sonoma-----
Stanislaus-----
Sutter-----
Tehama-----
Trinity-----
Tulare-----
Tuolumne-----
Ventura-----
Yolo-----
Yuba-----
State Totals00300