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Last Updated: Aug 18, 2017 5:22pm PST

CA Dept. of Public Health

UC Davis Arbovirus Research and Training

Mosquito and Vector Control Assoc. of CA

Case Counts by County

County	Dead birds
Alameda	1
Alpine	-
Amador	-
Butte	2
Calaveras	-
Colusa	1
Contra Costa	5
Del Norte	-
El Dorado	1
Fresno	2
Glenn	-
Humboldt	-
Imperial	-
Inyo	-
Kern	3
Kings	1
Lake	1
Lassen	-
Los Angeles	32
Madera	-
Marin	-
Mariposa	-
Mendocino	-
Merced	1
Modoc	-
Mono	-
Monterey	1
Napa	-
Nevada	1
Orange	15
Placer	1
Plumas	-
Riverside	23
Sacramento	40
San Benito	-
San Bernardino	27
San Diego	14
San Francisco	-
San Joaquin	6
San Luis Obispo	-
San Mateo	1
Santa Barbara	-
Santa Clara	5
Santa Cruz	1
Shasta	-
Sierra	-
Siskiyou	-
Solano	1
Sonoma	-
Stanislaus	3
Sutter	1
Tehama	-
Trinity	-
Tulare	8
Tuolumne	-
Ventura	-
Yolo	1
Yuba	4
Total	203

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

Weekly Reports

2017-08-18		2017 YTD SLEV Activity Map
2017-08-18		Arbovirus Bulletin #20
2017-08-18		2017 YTD WNV Activity Map
2017-08-15		2017 US Arboviral Activity Update
2017-08-14		Arbovirus Bulletin #19
2017-08-04		Arbovirus Bulletin #18
2017-07-28		Arbovirus Bulletin #17
2017-07-24		Arbovirus Bulletin #16
2017-07-14		Arbovirus Bulletin #15
2017-07-07		Arbovirus Bulletin #14
		- view full list of Weekly Reports -

Humans

2017-08-16		2003-2017 WNV Case Summary
2017-08-16		2017 Human WNV Incidence Report
2017-02-08		2016 Human WNV Incidence Report
2016-03-21		2015 Human WNV Incidence Report
2015-03-09		2014 Human WNV Incidence Report
2014-08-12		2013 Human WNV Incidence Report
2013-07-22		2012 Human WNV Surveillance Report
2013-03-18		2012 Human WNV Incidence Report
2012-06-13		2003-2011 WNV Case Summary by County
2012-04-26		2011 Human WNV Incidence Report
		- view full list of Humans -

Dead Birds

2017-08-18		Reported, Tested, Positive 2017
2017-08-18		Positive Counts by City/County for 2017
2017-08-18		Positive Species for 2017
2017-03-30		Reported, Tested, Positive 2016
2017-03-30		Positive Species for 2016
2017-03-30		Positive Counts by City/County for 2016
2016-02-29		Positive Species for 2015
2016-02-29		Reported, Tested, Positive 2015
2016-02-29		Positive Counts by City/County for 2015
2015-03-12		Reported, Tested, Positive 2014
		- view full list of Dead Birds -

Mosquitoes

2017-08-18		AMOR - NJLT 5 Year Average Week 32
2017-08-18		AMOR - NJLT Week 32
2017-08-18		AMOR - EVS Week 32
2017-08-18		AMOR - GRAVID Week 32
2017-08-11		AMOR - NJLT Week 31
2017-08-11		AMOR - NJLT 5 Year Average Week 31
2017-08-11		AMOR - EVS Week 31
2017-08-11		AMOR - GRAVID Week 31
2017-08-04		AMOR - NJLT 5 Year Average Week 30
2017-08-04		AMOR - NJLT Week 30
		- view full list of Mosquitoes -

Horses

2010-12-16		2010 Confirmed Equine Cases Report
2010-12-16		2010 Equine WNV Result Map
2010-05-26		2009 Equine WNV Result Map
2009-10-24		2009 Confirmed Equine Cases
2008-11-10		2008 Confirmed Equine Cases
2007-10-04		2007 Equine WNV Result Map

Reports and Analyses

2017-03-08		2016 YTD WNV Activity Map
2017-01-17		2016 US Arboviral Activity Update
2012-08-22		2011 West Nile virus Activity in California
2012-07-11		1999-2010 Total WNND cases by year
2011-07-11		1999-2011 Reported WNV Disease Cases in Humans
2010-08-22		2010 West Nile virus Activity in California
2009-08-22		2009 WNV Activity by County
2009-01-21		2008 WNV Activity Map
2009-01-21		2008 WNV Activity by County
2008-12-16		2004-2008 Comparative Line Graphs of West Nile Virus Activity
		- view full list of Reports and Analyses -

Participating Agencies: California Department of Public Health | UC Davis Arbovirus Research and Training | Mosquito and Vector Control Association of California

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

As of Aug 18, 2017	2017	2016	5Y AVG
Counties	32	35	36
Human cases	41	46	56
Dead birds	203	1010	872
Mosquito samples	2049	2565	1820
Sentinel chickens	92	161	149
YTD - Year to date corresponds to the same time last year or last five years. - view all 2016 YTD activity -

WNV Reports

Weekly Report
08.18		Arbovirus Bulletin #20
08.18		2017 YTD SLEV Activity Map
08.18		2017 YTD WNV Activity Map
Humans
08.16		2017 Human WNV Incidence Report
08.16		2003-2017 WNV Case Summary
02.08		2016 Human WNV Incidence Report
Dead Birds
08.18		Positive Counts by City/County for 2017
08.18		Positive Species for 2017
08.18		Reported, Tested, Positive 2017
Mosquitoes
08.18		AMOR - EVS Week 32
08.18		AMOR - GRAVID Week 32
08.18		AMOR - NJLT Week 32
- view report archives -