Case Counts by County

CountyDead birds
Alameda89
Alpine-
Amador-
Butte20
Calaveras-
Colusa4
Contra Costa40
Del Norte-
El Dorado5
Fresno9
Glenn4
Humboldt2
Imperial-
Inyo-
Kern3
Kings3
Lake18
Lassen-
Los Angeles70
Madera5
Marin5
Mariposa-
Mendocino-
Merced7
Modoc-
Mono-
Monterey-
Napa12
Nevada-
Orange326
Placer39
Plumas-
Riverside1
Sacramento285
San Benito-
San Bernardino13
San Diego7
San Francisco-
San Joaquin50
San Luis Obispo-
San Mateo16
Santa Barbara-
Santa Clara863
Santa Cruz1
Shasta6
Sierra-
Siskiyou-
Solano33
Sonoma26
Stanislaus45
Sutter19
Tehama-
Trinity-
Tulare40
Tuolumne-
Ventura5
Yolo68
Yuba16
Total2155

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

Weekly Reports

2014 YTD WNV Activity Map
2014 US Arboviral Activity Update
Arbovirus Bulletin #31
Arbovirus Bulletin #30
Arbovirus Bulletin #29
Arbovirus Bulletin #28
Arbovirus Bulletin #27
Arbovirus Bulletin #26
Arbovirus Bulletin #25
Arbovirus Bulletin #24
- view full list of Weekly Reports -

Humans

2003-2014 WNV Case Summary
2014 Human WNV Incidence Report
2013 Human WNV Incidence Report
2012 Human WNV Surveillance Report
2012 Human WNV Incidence Report
2003-2011 WNV Case Summary by County
2011 Human WNV Incidence Report
2011 Human WNV Case Linelist
2010 Human WNV Incidence Report
2010 Human WNV Case Linelist
- view full list of Humans -

Dead Birds

Reported, Tested, Positive 2014
Positive Species for 2014
Positive Counts by City/County for 2014
Positive Counts by City/County for 2013
Reported, Tested, Positive 2013
Positive Species for 2013
Positive Counts by City/County for 2014
Reported, Tested, Positive 2014 YTD
Positive Species for 2014
Positive Counts by City/County for 2012
- view full list of Dead Birds -

Mosquitoes

AMOR - NJLT 5 Year Average Week 38
AMOR - NJLT Week 38
AMOR - GRAVID Week 38
AMOR - EVS Week 38
Arbovirus Bulletin #32
AMOR - NJLT Week 37
AMOR - EVS Week 37
AMOR - GRAVID Week 37
AMOR - NJLT 5 Year Average Week 37
AMOR - GRAVID Week 36
- view full list of Mosquitoes -

Horses

2010 Confirmed Equine Cases Report
2010 Equine WNV Result Map
2009 Equine WNV Result Map
2009 Confirmed Equine Cases
2008 Confirmed Equine Cases
2007 Equine WNV Result Map

Reports and Analyses

2011 West Nile virus Activity in California
1999-2010 Total WNND cases by year
1999-2011 Reported WNV Disease Cases in Humans
2010 West Nile virus Activity in California
2009 WNV Activity by County
2008 WNV Activity Map
2008 WNV Activity by County
2004-2008 Comparative Line Graphs of West Nile Virus Activity
2007 YTD WNV Activity Map
2007 WNV Activity by County
- view full list of Reports and Analyses -

Locate Your Local Mosquito and Vector Control Agency
Search by Zip Code

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

As of Sep 30, 2014201420135Y AVG
Counties384138
Human cases428205136
Dead birds21551102770
Mosquito samples304723791818
Sentinel chickens361404329
YTD - Year to date corresponds to the same time last year or last five years.

- view all 2013 YTD activity -

WNV Reports

Weekly Report

09.30 2014 YTD WNV Activity Map
09.23 2014 US Arboviral Activity Update
09.19 Arbovirus Bulletin #31

Humans

09.29 2014 Human WNV Incidence Report
09.29 2003-2014 WNV Case Summary
08.12 2013 Human WNV Incidence Report

Dead Birds

09.30Reported, Tested, Positive 2014
09.30Positive Counts by City/County for 2014
09.30Positive Species for 2014

Mosquitoes

09.26 Arbovirus Bulletin #32
09.26 AMOR - EVS Week 38
09.26 AMOR - GRAVID Week 38
- view report archives -