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Maps and Data  > 2006 WNV Activity by County 01/26/07

West Nile virus has been detected in 54/ 58 California Counties in 2006.

2006 WNV Activity by County

CountyHuman CasesHorsesDead BirdsMosquito SamplesSentinel ChickensSquirrels
State Totals 276 58 1446 832 64032
Alameda1-419-2
Alpine------
Amador--2---
Butte31-401491
Calaveras--22--
Colusa4-9-1-
Contra Costa81 93 182518
Del Norte------
El Dorado2-192--
Fresno115 75 4037-
Glenn12-35110-
Humboldt--2---
Imperial1--1457-
Inyo--83--
Kern4942423092-
Kings1-133425-
Lake228126-
Lassen-733--
Los Angeles13- 98 78381
Madera--349-
Marin119221
Mariposa--1---
Mendocino-27---
Merced4341815-
Modoc222---
Mono1-1---
Monterey--5---
Napa1-8---
Nevada1-4---
Orange6- 49 14--
Placer81 13 2311-
Plumas------
Riverside4-33127-
Sacramento151 89 3413-
San Benito--1---
San Bernardino3-3325263
San Diego1 3 26 ---
San Francisco--3---
San Joaquin82474019-
San Luis Obispo1514---
San Mateo--7--2
Santa Barbara-2191--
Santa Clara51 224 912
Santa Cruz--7---
Shasta44 89 742
Sierra------
Siskiyou--1---
Solano6- 21 122-
Sonoma-1 23 11-
Stanislaus113 77 5145-
Sutter12125536-
Tehama 6 212-3-
Trinity--1---
Tulare6314830-
Tuolumne--1---
Ventura3- 62 21-
Yolo 27 - 54 6426-
Yuba52169-
State Totals276 58 1446 832 64032


* A mosquito sample is a collection of approximately 50 mosquitoes that are tested together for West Nile virus.

 

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