2017 WNV Activity by County

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

Total Positive Counties: 47

CountyHuman CasesHorsesDead BirdsMosquito SamplesSentinel Chickens
State Totals553215103371305
Alameda1-2--
Alpine-----
Amador-----
Butte4-54731
Calaveras----1
Colusa--1--
Contra Costa411997
Del Norte-----
El Dorado--2--
Fresno1315167-
Glenn-22121
Humboldt--1--
Imperial3----
Inyo4--9-
Kern3023152-
Kings5-179-
Lake--5172
Lassen-3---
Los Angeles2771101582145
Madera2-162-
Marin--1--
Mariposa-----
Mendocino-----
Merced10-14019
Modoc-----
Mono-----
Monterey--1--
Napa-----
Nevada--1--
Orange33-57280-
Placer--4595
Plumas-1---
Riverside32441196-
Sacramento61861532
San Benito----1
San Bernardino57-4529536
San Diego21439-
San Francisco1-1--
San Joaquin1427242-
San Luis Obispo--6--
San Mateo--1--
Santa Barbara--114
Santa Clara--15--
Santa Cruz--1--
Shasta1-2-4
Sierra-----
Siskiyou-----
Solano1-4911
Sonoma--51-
Stanislaus28-6196-
Sutter3-31622
Tehama21--4
Trinity-----
Tulare12-8630-
Tuolumne-1---
Ventura1-23-
Yolo6-14872
Yuba1-6188
State Totals553215103371305