2016 WNV Activity by County
Year To Date (Weeks 1 - 45)

(2018-08-16) - Source: http://www.westnile.ca.gov

Total Positive Counties: 38

CountyHuman CasesHorsesDead BirdsMosquito SamplesSentinel Chickens
State Totals387013413504342
Alameda--112-
Alpine-----
Amador-----
Butte21-224838
Calaveras-----
Colusa2---9
Contra Costa3-33115
Del Norte-----
El Dorado1-4--
Fresno10-6185-
Glenn5-41110
Humboldt-----
Imperial---1-
Inyo-----
Kern16--80-
Kings7-4118-
Lake1-5395
Lassen-----
Los Angeles135-121434125
Madera6-5101-
Marin--5--
Mariposa-----
Mendocino-----
Merced--51335
Modoc-----
Mono-----
Monterey1----
Napa--14-
Nevada--2-1
Orange32-86423-
Placer7-301037
Plumas-----
Riverside6-1632-
Sacramento23-4114553
San Benito-----
San Bernardino8-58123
San Diego17-262999
San Francisco-----
San Joaquin7-37350-
San Luis Obispo-----
San Mateo--145-
Santa Barbara-----
Santa Clara1-89131
Santa Cruz--23-
Shasta1-3123
Sierra-----
Siskiyou-----
Solano3-131610
Sonoma--82-
Stanislaus24-14258-
Sutter11-106833
Tehama5---8
Trinity-----
Tulare10-3260-
Tuolumne-----
Ventura2-34--
Yolo13-722594
Yuba9-41813
State Totals387013413504342