Case Counts by County

CountyDead birds
Alameda12
Alpine-
Amador-
Butte30
Calaveras-
Colusa3
Contra Costa4
Del Norte-
El Dorado2
Fresno1
Glenn4
Humboldt2
Imperial-
Inyo-
Kern1
Kings3
Lake3
Lassen-
Los Angeles7
Madera1
Marin3
Mariposa-
Mendocino-
Merced1
Modoc-
Mono-
Monterey-
Napa5
Nevada8
Orange25
Placer8
Plumas-
Riverside34
Sacramento59
San Benito-
San Bernardino4
San Diego102
San Francisco-
San Joaquin10
San Luis Obispo-
San Mateo7
Santa Barbara-
Santa Clara83
Santa Cruz-
Shasta8
Sierra-
Siskiyou-
Solano7
Sonoma4
Stanislaus12
Sutter16
Tehama-
Trinity2
Tulare22
Tuolumne-
Ventura6
Yolo47
Yuba6
Total552

WNV Activity by County
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2015 | 2014 | 2013
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2009 | 2008 | 2007

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

As of Aug 26, 2015201520145Y AVG
Counties393632
Human cases579238
Dead birds5521573751
Mosquito samples176820371272
Sentinel chickens150129114
YTD - Year to date corresponds to the same time last year or last five years.

- view all 2014 YTD activity -

WNV Reports

Weekly Report

08.26 2015 YTD WNV Activity Map
08.25 2015 US Arboviral Activity Update
08.21 Arbovirus Bulletin #25

Humans

08.19 2015 Human WNV Incidence Report
08.19 2003-2015 WNV Case Summary
03.09 2014 Human WNV Incidence Report

Dead Birds

08.26Positive Species for 2015
08.26Positive Counts by City/County for 2015
08.26Reported, Tested, Positive 2015

Mosquitoes

08.21 AMOR - EVS Week 32
08.21 AMOR - GRAVID Week 32
08.21 AMOR - NJLT Week 32
- view report archives -