2016 WNV Activity by County
Year To Date (Weeks 1 - 48)

(2017-12-15) - Source: http://www.westnile.ca.gov

Total Positive Counties: 38

CountyHuman CasesDead BirdsMosquito SamplesSentinel Chickens
State Totals40513473519343
Alameda-112-
Alpine----
Amador----
Butte21224838
Calaveras----
Colusa2--9
Contra Costa433115
Del Norte----
El Dorado14--
Fresno116185-
Glenn541110
Humboldt----
Imperial--1-
Inyo----
Kern17-80-
Kings74118-
Lake15395
Lassen----
Los Angeles142124435126
Madera65101-
Marin-5--
Mariposa----
Mendocino----
Merced-51335
Modoc----
Mono----
Monterey1---
Napa-14-
Nevada-2-1
Orange3288436-
Placer7301037
Plumas----
Riverside61632-
Sacramento244114553
San Benito----
San Bernardino858223
San Diego17262999
San Francisco----
San Joaquin1237350-
San Luis Obispo----
San Mateo-155-
Santa Barbara----
Santa Clara189131
Santa Cruz-23-
Shasta13123
Sierra----
Siskiyou----
Solano3131610
Sonoma-82-
Stanislaus2514258-
Sutter11106833
Tehama5--8
Trinity----
Tulare103260-
Tuolumne----
Ventura234--
Yolo13722594
Yuba1041813
State Totals40513473519343