2016 WNV Activity by County
Year To Date (Weeks 1 - 20)

(2017-09-22) - Source: http://www.westnile.ca.gov

Total Positive Counties: 9

CountyHuman CasesDead BirdsMosquito SamplesSentinel Chickens
State Totals025190
Alameda----
Alpine----
Amador----
Butte----
Calaveras----
Colusa----
Contra Costa----
Del Norte----
El Dorado----
Fresno----
Glenn----
Humboldt----
Imperial----
Inyo----
Kern----
Kings----
Lake----
Lassen----
Los Angeles-23-
Madera----
Marin----
Mariposa----
Mendocino----
Merced----
Modoc----
Mono----
Monterey----
Napa----
Nevada----
Orange-22-
Placer----
Plumas----
Riverside--3-
Sacramento-1--
San Benito----
San Bernardino--5-
San Diego-162-
San Francisco----
San Joaquin----
San Luis Obispo----
San Mateo----
Santa Barbara----
Santa Clara-3--
Santa Cruz----
Shasta----
Sierra----
Siskiyou----
Solano-1--
Sonoma----
Stanislaus----
Sutter----
Tehama----
Trinity----
Tulare--4-
Tuolumne----
Ventura----
Yolo----
Yuba----
State Totals025190