Case Counts by County

CountyDead birds
Alameda96
Alpine-
Amador-
Butte22
Calaveras-
Colusa4
Contra Costa44
Del Norte-
El Dorado6
Fresno9
Glenn4
Humboldt2
Imperial-
Inyo-
Kern3
Kings3
Lake18
Lassen-
Los Angeles99
Madera5
Marin6
Mariposa-
Mendocino-
Merced8
Modoc-
Mono-
Monterey-
Napa12
Nevada-
Orange416
Placer40
Plumas-
Riverside1
Sacramento294
San Benito-
San Bernardino17
San Diego26
San Francisco-
San Joaquin53
San Luis Obispo-
San Mateo19
Santa Barbara2
Santa Clara904
Santa Cruz1
Shasta6
Sierra-
Siskiyou-
Solano33
Sonoma37
Stanislaus47
Sutter19
Tehama-
Trinity-
Tulare40
Tuolumne-
Ventura7
Yolo71
Yuba16
Total2390

WNV Activity by County
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2011 | 2010 | 2009
2008 | 2007

News

WNV in CA 2011

May 5, 2011

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Compared to previous year and previous five-year average to date

As of Oct 31, 2014201420135Y AVG
Counties404339
Human cases654319206
Dead birds23901220886
Mosquito samples330925111952
Sentinel chickens433479415
YTD - Year to date corresponds to the same time last year or last five years.

- view all 2013 YTD activity -

WNV Reports

Weekly Report

10.31 Arbovirus Bulletin #37
10.31 2014 YTD WNV Activity Map
10.28 2014 US Arboviral Activity Update

Humans

10.27 2014 Human WNV Incidence Report
10.27 2003-2014 WNV Case Summary
08.12 2013 Human WNV Incidence Report

Dead Birds

10.31Reported, Tested, Positive 2014
10.31Positive Counts by City/County for 2014
10.31Positive Species for 2014

Mosquitoes

10.31 AMOR - EVS Week 43
10.31 AMOR - GRAVID Week 43
10.31 AMOR - NJLT Week 43
- view report archives -