2015 WNV Activity by County

(2018-12-12) - Source: http://www.westnile.ca.gov

Total Positive Counties: 41

CountyHuman CasesHorsesDead BirdsMosquito SamplesSentinel Chickens
State Totals782013493329449
Alameda--1916-
Alpine-----
Amador-----
Butte53-389437
Calaveras-----
Colusa1-3-10
Contra Costa1-11818
Del Norte-----
El Dorado--4--
Fresno8-3108-
Glenn19-42110
Humboldt--2--
Imperial1----
Inyo-----
Kern11-1135-
Kings--3144-
Lake2-5314
Lassen-----
Los Angeles286-103294138
Madera4-121-
Marin1-3--
Mariposa-----
Mendocino2----
Merced1-3823
Modoc-----
Mono-----
Monterey-----
Napa--7--
Nevada2-10-4
Orange92-83576-
Placer--21528
Plumas-----
Riverside127-8215822
Sacramento4-1031642
San Benito-----
San Bernardino53-2529136
San Diego42-3554612
San Francisco-----
San Joaquin2-18208-
San Luis Obispo-----
San Mateo--235-
Santa Barbara--31-
Santa Clara8-231205
Santa Cruz-----
Shasta3-164822
Sierra-----
Siskiyou1----
Solano1-1067
Sonoma--1112-
Stanislaus13-14849
Sutter2-165436
Tehama5---18
Trinity--2--
Tulare13-23528-
Tuolumne-----
Ventura6-26-11
Yolo8-611736
Yuba10-62311
State Totals782013493329449