2009 WNV Activity by County

(2017-02-23) - Source: http://www.westnile.ca.gov

Total Positive Counties: 42

CountyHuman CasesDead BirdsMosquito SamplesSentinel Chickens
State Totals1125151063443
Alameda-101-
Alpine----
Amador-1--
Butte213536
Calaveras----
Colusa-2--
Contra Costa5451713
Del Norte----
El Dorado19--
Fresno136213217
Glenn-6-3
Humboldt----
Imperial--342
Inyo----
Kern1928138104
Kings39105-
Lake-221
Lassen----
Los Angeles20829941
Madera11137
Marin----
Mariposa----
Mendocino----
Merced491114
Modoc-1--
Mono--1-
Monterey14--
Napa---3
Nevada----
Orange41016-
Placer-44011
Plumas----
Riverside322737
Sacramento-28362
San Benito----
San Bernardino2185414
San Diego43955
San Francisco-1--
San Joaquin10248310
San Luis Obispo-1--
San Mateo-1--
Santa Barbara-1--
Santa Clara-1414-
Santa Cruz-1--
Shasta-92-
Sierra----
Siskiyou----
Solano-3213
Sonoma----
Stanislaus13289425
Sutter--2511
Tehama---2
Trinity----
Tulare42513128
Tuolumne-2--
Ventura-3--
Yolo27164
Yuba1-1-
State Totals1125151063443