2013 WNV Activity by County

(2018-10-23) - Source: http://www.westnile.ca.gov

Total Positive Counties: 44

CountyHuman CasesHorsesDead BirdsMosquito SamplesSentinel Chickens
State Totals3791312512528485
Alameda--22--
Alpine-----
Amador-----
Butte24-423357
Calaveras-----
Colusa2-1-8
Contra Costa5168137
Del Norte-----
El Dorado1----
Fresno7-1266-
Glenn9-8169
Humboldt--1--
Imperial-----
Inyo-----
Kern252218112
Kings1-1278-
Lake--10626
Lassen-----
Los Angeles158-313417151
Madera3-7162
Marin2-7-1
Mariposa-----
Mendocino--2--
Merced--39821
Modoc-----
Mono-----
Monterey-----
Napa1-2--
Nevada--6-2
Orange9-4248-
Placer63398913
Plumas-----
Riverside351228144
Sacramento1031793846
San Benito-1--1
San Bernardino13-3724929
San Diego--9--
San Francisco1----
San Joaquin8-34163-
San Luis Obispo--11-
San Mateo-----
Santa Barbara1----
Santa Clara2-77252
Santa Cruz--11-
Shasta1-381521
Sierra-----
Siskiyou1----
Solano1-15112
Sonoma--3752
Stanislaus182131588
Sutter10-166135
Tehama3-3-8
Trinity--1--
Tulare5-7975
Tuolumne--1--
Ventura2-8--
Yolo6-10624612
Yuba9-111411
State Totals3791312512528485