2016 WNV Activity by County
Year To Date (Weeks 1 - 29)

(2024-03-28) - Source: http://westnile.ca.gov

Total Positive Counties: 32

CountyHuman CasesDead BirdsMosquito SamplesSentinel ChickensHorses
State Totals06581157300
Alameda-3---
Alpine-----
Amador-----
Butte-213--
Calaveras-----
Colusa-----
Contra Costa-42--
Del Norte-----
El Dorado-----
Fresno-387--
Glenn--11--
Humboldt-----
Imperial-----
Inyo-----
Kern--28--
Kings-342--
Lake-24--
Lassen-----
Los Angeles-417910-
Madera-122--
Marin-2---
Mariposa-----
Mendocino-----
Merced-351-
Modoc-----
Mono-----
Monterey-----
Napa--2--
Nevada-----
Orange-1332--
Placer-530--
Plumas-----
Riverside-419--
Sacramento-282243--
San Benito-----
San Bernardino--392-
San Diego-167448-
San Francisco-----
San Joaquin-19105--
San Luis Obispo-----
San Mateo-6---
Santa Barbara-----
Santa Clara-478--
Santa Cruz-12--
Shasta--1--
Sierra-----
Siskiyou-----
Solano-13--
Sonoma--1--
Stanislaus-461--
Sutter-6409-
Tehama-----
Trinity-----
Tulare--170--
Tuolumne-----
Ventura-12---
Yolo-2656--
Yuba-18--
State Totals06581157300