2016 WNV Activity by County

(2021-08-04) - Source: http://westnile.ca.gov

Total Positive Counties: 39

CountyHuman CasesDead BirdsMosquito SamplesSentinel ChickensHorses
State Totals442135235283430
Alameda-112--
Alpine-----
Amador1----
Butte21224838-
Calaveras-----
Colusa2--9-
Contra Costa433115-
Del Norte-----
El Dorado14---
Fresno146185--
Glenn641110-
Humboldt-----
Imperial--1--
Inyo-----
Kern17-80--
Kings84118--
Lake15395-
Lassen-----
Los Angeles151124436126-
Madera65101--
Marin-5---
Mariposa-----
Mendocino-----
Merced-51335-
Modoc-----
Mono-----
Monterey1----
Napa-14--
Nevada-2-1-
Orange3291444--
Placer7301037-
Plumas-----
Riverside111632--
Sacramento254114553-
San Benito-----
San Bernardino858223-
San Diego20264999-
San Francisco-----
San Joaquin1337350--
San Luis Obispo-----
San Mateo-155--
Santa Barbara-----
Santa Clara189131-
Santa Cruz-23--
Shasta13123-
Sierra-----
Siskiyou-----
Solano4131610-
Sonoma-82--
Stanislaus2614258--
Sutter12106833-
Tehama5--8-
Trinity-----
Tulare103260--
Tuolumne-----
Ventura734---
Yolo16722594-
Yuba1141813-
State Totals442135235283430