Case Counts by County

CountyDead birds
Alameda95
Alpine-
Amador-
Butte22
Calaveras-
Colusa4
Contra Costa44
Del Norte-
El Dorado5
Fresno9
Glenn4
Humboldt2
Imperial-
Inyo-
Kern3
Kings3
Lake18
Lassen-
Los Angeles97
Madera5
Marin6
Mariposa-
Mendocino-
Merced8
Modoc-
Mono-
Monterey-
Napa12
Nevada-
Orange409
Placer40
Plumas-
Riverside1
Sacramento294
San Benito-
San Bernardino17
San Diego23
San Francisco-
San Joaquin53
San Luis Obispo-
San Mateo19
Santa Barbara1
Santa Clara904
Santa Cruz1
Shasta6
Sierra-
Siskiyou-
Solano33
Sonoma37
Stanislaus47
Sutter19
Tehama-
Trinity-
Tulare40
Tuolumne-
Ventura7
Yolo71
Yuba16
Total2375

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 #35
Arbovirus Bulletin #34
Arbovirus Bulletin #33
Arbovirus Bulletin #31
Arbovirus Bulletin #30
Arbovirus Bulletin #29
Arbovirus Bulletin #28
Arbovirus Bulletin #27
- view full list of Weekly Reports -

Humans

2014 Human WNV Incidence Report
2003-2014 WNV Case Summary
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 Case Linelist
2011 Human WNV Incidence Report
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 41
AMOR - NJLT Week 41
AMOR - GRAVID Week 41
AMOR - EVS Week 41
AMOR - EVS Week 40
AMOR - NJLT 5 Year Average Week 40
AMOR - GRAVID Week 40
AMOR - NJLT Week 40
AMOR - GRAVID Week 39
AMOR - NJLT 5 Year Average Week 39
- 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 Oct 22, 2014201420135Y AVG
Counties404139
Human cases608297191
Dead birds23751210877
Mosquito samples326824891924
Sentinel chickens412463394
YTD - Year to date corresponds to the same time last year or last five years.

- view all 2013 YTD activity -

WNV Reports

Weekly Report

10.22 2014 YTD WNV Activity Map
10.21 2014 US Arboviral Activity Update
10.17 Arbovirus Bulletin #35

Humans

10.21 2014 Human WNV Incidence Report
10.21 2003-2014 WNV Case Summary
08.12 2013 Human WNV Incidence Report

Dead Birds

10.22Reported, Tested, Positive 2014
10.22Positive Counts by City/County for 2014
10.22Positive Species for 2014

Mosquitoes

10.17 AMOR - EVS Week 41
10.17 AMOR - GRAVID Week 41
10.17 AMOR - NJLT Week 41
- view report archives -