Case Counts by County

WNV Activity by County
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2018 | 2017 | 2016 | 2015 | 2014
2013 | 2012 | 2011
2010 | 2009 | 2008
2007

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The California Mosquito-borne Virus Surveillance and Response Program works to protect Californians from mosquito-borne viruses through environmental monitoring, laboratory testing, mosquito control, and public outreach.

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

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As of Dec 20, 2019	2019	2018	5Y AVG
Counties	34	41	34
Human cases	214	203	372
Dead birds	226	501	742
Mosquito samples	3288	1963	2437
Sentinel chickens	139	163	252
YTD - Year to date corresponds to the same time last year or last five years. - view all 2019 YTD activity -

Weekly Report
12.20		2019 YTD WNV Activity Map
12.06		Arbobulletin #35
11.22		Arbobulletin #34
Humans
12.19		2019 Human WNV Incidence Report
12.19		2003-2019 WNV Case Summary
05.15		2018 Human WNV Incidence Report
Dead Birds
12.20		Positive Counts by City/County for 2019
12.20		Positive Species for 2019
12.20		Reported, Tested, Positive 2019
Mosquitoes
10.04		AMOR - EVS Week 39
10.04		AMOR - GRAVID Week 39
10.04		AMOR - NJLT Week 39
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