CA Dept. of Public Health UC Davis Arbovirus Research and Training Mosquito and Vector Control Assoc. of CA

Case Counts by County

CountyDead birds
Alameda1
Alpine-
Amador-
Butte4
Calaveras-
Colusa1
Contra Costa10
Del Norte-
El Dorado1
Fresno5
Glenn2
Humboldt1
Imperial-
Inyo-
Kern3
Kings1
Lake3
Lassen-
Los Angeles59
Madera1
Marin-
Mariposa-
Mendocino-
Merced1
Modoc-
Mono-
Monterey1
Napa-
Nevada1
Orange37
Placer2
Plumas-
Riverside29
Sacramento65
San Benito-
San Bernardino37
San Diego22
San Francisco1
San Joaquin6
San Luis Obispo-
San Mateo1
Santa Barbara-
Santa Clara7
Santa Cruz1
Shasta2
Sierra-
Siskiyou-
Solano2
Sonoma2
Stanislaus4
Sutter2
Tehama-
Trinity-
Tulare8
Tuolumne-
Ventura1
Yolo6
Yuba6
Total336

WNV Activity by County
Printable Version
2017 | 2016 | 2015 | 2014
2013 | 2012 | 2011
2010 | 2009 | 2008
2007

Reports and Analyses

2017-03-082016 YTD WNV Activity Map
2017-01-172016 US Arboviral Activity Update
2012-08-222011 West Nile virus Activity in California
2012-07-111999-2010 Total WNND cases by year
2011-07-111999-2011 Reported WNV Disease Cases in Humans
2010-08-222010 West Nile virus Activity in California
2009-08-222009 WNV Activity by County
2009-01-212008 WNV Activity Map
2009-01-212008 WNV Activity by County
2008-12-162004-2008 Comparative Line Graphs of West Nile Virus Activity
2008-03-072007 YTD WNV Activity Map
2008-01-282007 WNV Activity by County
2007-10-302003-2007 WNV Activity Summary
2007-03-262006 West Nile Virus Summary Presentation
2006-12-232006 West Nile Activity in California
2006-08-222006 Summary of WNV-Positive Surveillance Elements in CA 2006
2005-12-312005 West Nile Activity in California
2005-12-312005 West Nile Virus Summary Presentation
2004-12-312004 West Nile Virus Summary Presentation
2004-12-312004 West Nile Activity in California
2004-12-122004 WNV Agency Survey Report
2003-12-312003 West Nile Activity in California

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

As of Sep 15, 2017201720165Y AVG
Counties423638
Human cases143199183
Dead birds33612381262
Mosquito samples297931902633
Sentinel chickens204280301
YTD - Year to date corresponds to the same time last year or last five years.

- view all 2016 YTD activity -

WNV Reports

Weekly Report

09.19 2017 US Arboviral Activity Update
09.18 2017 YTD WNV Activity Map
09.15 Arbovirus Bulletin #24

Humans

09.13 2017 Human WNV Incidence Report
09.13 2003-2017 WNV Case Summary
02.08 2016 Human WNV Incidence Report

Dead Birds

09.18Positive Counts by City/County for 2017
09.18Positive Species for 2017
09.18Reported, Tested, Positive 2017

Mosquitoes

09.15 AMOR - EVS Week 36
09.15 AMOR - GRAVID Week 36
09.15 AMOR - NJLT Week 36
- view report archives -