2013 WNV Activity by County

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

Total Positive Counties: 44

CountyHuman CasesDead BirdsMosquito SamplesSentinel ChickensHorses
State Totals3791251252848513
Alameda-22---
Alpine-----
Amador-----
Butte24423357-
Calaveras-----
Colusa21-8-
Contra Costa5681371
Del Norte-----
El Dorado1----
Fresno71266--
Glenn98169-
Humboldt-1---
Imperial-----
Inyo-----
Kern252181122
Kings11278--
Lake-10626-
Lassen-----
Los Angeles158313417151-
Madera37162-
Marin27-1-
Mariposa-----
Mendocino-2---
Merced-39821-
Modoc-----
Mono-----
Monterey-----
Napa12---
Nevada-6-2-
Orange94248--
Placer63989133
Plumas-----
Riverside352281441
Sacramento1017938463
San Benito---11
San Bernardino133724929-
San Diego-9---
San Francisco1----
San Joaquin834163--
San Luis Obispo-11--
San Mateo-----
Santa Barbara1----
Santa Clara277252-
Santa Cruz-11--
Shasta1381521-
Sierra-----
Siskiyou1----
Solano115112-
Sonoma-3752-
Stanislaus181315882
Sutter10166135-
Tehama33-8-
Trinity-1---
Tulare57975-
Tuolumne-1---
Ventura28---
Yolo610624612-
Yuba9111411-
State Totals3791251252848513