Case Counts by County

CountyDead birds
Alameda12
Alpine-
Amador-
Butte33
Calaveras-
Colusa3
Contra Costa4
Del Norte-
El Dorado2
Fresno1
Glenn4
Humboldt2
Imperial-
Inyo-
Kern1
Kings3
Lake5
Lassen-
Los Angeles12
Madera1
Marin3
Mariposa-
Mendocino-
Merced1
Modoc-
Mono-
Monterey-
Napa5
Nevada9
Orange25
Placer8
Plumas-
Riverside39
Sacramento62
San Benito-
San Bernardino4
San Diego107
San Francisco-
San Joaquin11
San Luis Obispo-
San Mateo8
Santa Barbara-
Santa Clara83
Santa Cruz-
Shasta10
Sierra-
Siskiyou-
Solano7
Sonoma4
Stanislaus13
Sutter16
Tehama-
Trinity2
Tulare22
Tuolumne-
Ventura6
Yolo48
Yuba6
Total582

WNV Activity by County
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2015 | 2014 | 2013
2012 | 2011 | 2010
2009 | 2008 | 2007

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

As of Aug 28, 2015201520145Y AVG
Counties403632
Human cases8312554
Dead birds5821573751
Mosquito samples207324841702
Sentinel chickens174184151
YTD - Year to date corresponds to the same time last year or last five years.

- view all 2014 YTD activity -

WNV Reports

Weekly Report

09.01 2015 US Arboviral Activity Update
08.31 2015 YTD WNV Activity Map
08.28 Arbovirus Bulletin #26

Humans

08.28 2015 Human WNV Incidence Report
08.28 2003-2015 WNV Case Summary
03.09 2014 Human WNV Incidence Report

Dead Birds

08.31Positive Species for 2015
08.31Positive Counts by City/County for 2015
08.31Reported, Tested, Positive 2015

Mosquitoes

08.28 AMOR - EVS Week 33
08.28 AMOR - GRAVID Week 33
08.28 AMOR - NJLT Week 33
- view report archives -