2016 WNV Activity by County
Year To Date (Weeks 1 - 40)

(2017-10-22) - Source: http://www.westnile.ca.gov

Total Positive Counties: 38

CountyHuman CasesDead BirdsMosquito SamplesSentinel Chickens
State Totals30913073429314
Alameda-112-
Alpine----
Amador----
Butte21224838
Calaveras----
Colusa2--9
Contra Costa129105
Del Norte----
El Dorado14--
Fresno96184-
Glenn541110
Humboldt----
Imperial--1-
Inyo----
Kern10-80-
Kings24118-
Lake14395
Lassen----
Los Angeles105112409106
Madera55100-
Marin-5--
Mariposa----
Mendocino----
Merced-51333
Modoc----
Mono----
Monterey1---
Napa-14-
Nevada-2-1
Orange2381406-
Placer5291037
Plumas----
Riverside41631-
Sacramento20409455-
San Benito----
San Bernardino757920
San Diego12257759
San Francisco----
San Joaquin737348-
San Luis Obispo----
San Mateo-135-
Santa Barbara----
Santa Clara18613-
Santa Cruz-23-
Shasta13123
Sierra----
Siskiyou----
Solano2131610
Sonoma-82-
Stanislaus1913257-
Sutter10106833
Tehama5--8
Trinity----
Tulare73260-
Tuolumne----
Ventura233--
Yolo12712594
Yuba941813
State Totals30913073429314