2016 WNV Activity by County
Year To Date (Weeks 1 - 24)

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

Total Positive Counties: 19

CountyHuman CasesDead BirdsMosquito SamplesSentinel ChickensHorses
State Totals019318520
Alameda-----
Alpine-----
Amador-----
Butte-----
Calaveras-----
Colusa-----
Contra Costa-1---
Del Norte-----
El Dorado-----
Fresno-119--
Glenn-----
Humboldt-----
Imperial-----
Inyo-----
Kern--11--
Kings--3--
Lake-----
Lassen-----
Los Angeles-139--
Madera-16--
Marin-----
Mariposa-----
Mendocino-----
Merced-----
Modoc-----
Mono-----
Monterey-----
Napa-----
Nevada-----
Orange-64--
Placer-----
Plumas-----
Riverside--10--
Sacramento-6536--
San Benito-----
San Bernardino--10--
San Diego-83402-
San Francisco-----
San Joaquin-29--
San Luis Obispo-----
San Mateo-----
Santa Barbara-----
Santa Clara-144--
Santa Cruz-----
Shasta-----
Sierra-----
Siskiyou-----
Solano-1---
Sonoma-----
Stanislaus-22--
Sutter-18--
Tehama-----
Trinity-----
Tulare--14--
Tuolumne-----
Ventura-2---
Yolo-1---
Yuba-----
State Totals019318520