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

Case Counts by County

CountyDead birds
Alameda2
Alpine-
Amador-
Butte5
Calaveras-
Colusa1
Contra Costa19
Del Norte-
El Dorado2
Fresno5
Glenn2
Humboldt1
Imperial-
Inyo-
Kern3
Kings1
Lake5
Lassen-
Los Angeles100
Madera1
Marin1
Mariposa-
Mendocino-
Merced1
Modoc-
Mono-
Monterey1
Napa-
Nevada1
Orange55
Placer4
Plumas-
Riverside41
Sacramento86
San Benito-
San Bernardino45
San Diego41
San Francisco1
San Joaquin7
San Luis Obispo6
San Mateo1
Santa Barbara1
Santa Clara12
Santa Cruz1
Shasta2
Sierra-
Siskiyou-
Solano4
Sonoma5
Stanislaus6
Sutter3
Tehama-
Trinity-
Tulare8
Tuolumne-
Ventura2
Yolo14
Yuba6
Total502

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

Weekly Reports

2017-11-172017 YTD WNV Activity Map
2017-11-17Arbovirus Bulletin #33
2017-11-142017 US Arboviral Activity Update
2017-11-132017 YTD SLEV Activity Map
2017-11-09Arbovirus Bulletin #32
2017-11-03Arbovirus Bulletin #31
2017-10-27Arbovirus Bulletin #30
2017-10-20Arbovirus Bulletin #29
2017-10-13Arbovirus Bulletin #28
2017-10-06Arbovirus Bulletin #27
- view full list of Weekly Reports -

Humans

2017-11-152003-2017 WNV Case Summary
2017-11-152017 Human WNV Incidence Report
2017-02-082016 Human WNV Incidence Report
2016-03-212015 Human WNV Incidence Report
2015-03-092014 Human WNV Incidence Report
2014-08-122013 Human WNV Incidence Report
2013-07-222012 Human WNV Surveillance Report
2013-03-182012 Human WNV Incidence Report
2012-06-132003-2011 WNV Case Summary by County
2012-04-262011 Human WNV Incidence Report
- view full list of Humans -

Dead Birds

2017-11-17Reported, Tested, Positive 2017
2017-11-17Positive Counts by City/County for 2017
2017-11-17Positive Species for 2017
2017-03-30Reported, Tested, Positive 2016
2017-03-30Positive Species for 2016
2017-03-30Positive Counts by City/County for 2016
2016-02-29Positive Species for 2015
2016-02-29Reported, Tested, Positive 2015
2016-02-29Positive Counts by City/County for 2015
2015-03-12Reported, Tested, Positive 2014
- view full list of Dead Birds -

Mosquitoes

2017-11-09AMOR - GRAVID Week 44
2017-11-09AMOR - NJLT Week 44
2017-11-09AMOR - EVS Week 44
2017-11-09AMOR - NJLT 5 Year Average Week 44
2017-11-03AMOR - EVS Week 43
2017-11-03AMOR - GRAVID Week 43
2017-11-03AMOR - NJLT Week 43
2017-11-03AMOR - NJLT 5 Year Average Week 43
2017-10-27AMOR - NJLT Week 42
2017-10-27AMOR - EVS Week 42
- view full list of Mosquitoes -

Horses

2010-12-162010 Confirmed Equine Cases Report
2010-12-162010 Equine WNV Result Map
2010-05-262009 Equine WNV Result Map
2009-10-242009 Confirmed Equine Cases
2008-11-102008 Confirmed Equine Cases
2007-10-042007 Equine WNV Result Map

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
- view full list of Reports and Analyses -

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

As of Nov 17, 2017201720165Y AVG
Counties473841
Human cases465395504
Dead birds50213461592
Mosquito samples336035063104
Sentinel chickens304343448
YTD - Year to date corresponds to the same time last year or last five years.

- view all 2016 YTD activity -

WNV Reports

Weekly Report

11.17 Arbovirus Bulletin #33
11.17 2017 YTD WNV Activity Map
11.14 2017 US Arboviral Activity Update

Humans

11.15 2017 Human WNV Incidence Report
11.15 2003-2017 WNV Case Summary
02.08 2016 Human WNV Incidence Report

Dead Birds

11.17Positive Counts by City/County for 2017
11.17Positive Species for 2017
11.17Reported, Tested, Positive 2017

Mosquitoes

11.09 AMOR - EVS Week 44
11.09 AMOR - GRAVID Week 44
11.09 AMOR - NJLT Week 44
- view report archives -