2013 WNV Activity by County

(2017-07-21) - Source: http://www.westnile.ca.gov

Total Positive Counties: 44

CountyHuman CasesDead BirdsMosquito SamplesSentinel Chickens
State Totals37912512528485
Alameda-22--
Alpine----
Amador----
Butte24423357
Calaveras----
Colusa21-8
Contra Costa568137
Del Norte----
El Dorado1---
Fresno71266-
Glenn98169
Humboldt-1--
Imperial----
Inyo----
Kern25218112
Kings11278-
Lake-10626
Lassen----
Los Angeles158313417151
Madera37162
Marin27-1
Mariposa----
Mendocino-2--
Merced-39821
Modoc----
Mono----
Monterey----
Napa12--
Nevada-6-2
Orange94248-
Placer6398913
Plumas----
Riverside35228144
Sacramento101793846
San Benito---1
San Bernardino133724929
San Diego-9--
San Francisco1---
San Joaquin834163-
San Luis Obispo-11-
San Mateo----
Santa Barbara1---
Santa Clara277252
Santa Cruz-11-
Shasta1381521
Sierra----
Siskiyou1---
Solano115112
Sonoma-3752
Stanislaus18131588
Sutter10166135
Tehama33-8
Trinity-1--
Tulare57975
Tuolumne-1--
Ventura28--
Yolo610624612
Yuba9111411
State Totals37912512528485