Reports
Reports and Analyses
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Jul 01, 2025
2025 US Arboviral Activity Update
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Jun 13, 2025
2025 WNV Activity by County
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Jun 13, 2025
2024 YTD WNV Activity Map
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Jun 12, 2025
2024 WNV Activity by County
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Jan 14, 2025
2024 US Arboviral Activity Update
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Oct 11, 2024
2024 YTD SLEV Activity Map
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Aug 26, 2024
2023 YTD WNV Activity Map
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Jul 24, 2024
2023 YTD SLEV Activity Map
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Jan 09, 2024
2023 US Arboviral Activity Update
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Apr 10, 2023
2023 WNV Activity by County
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Oct 11, 2023
2022 US Arboviral Activity Update
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Jul 31, 2023
2022 YTD SLEV Activity Map
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Jul 31, 2023
2022 YTD WNV Activity Map
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Apr 10, 2023
2022 WNV Activity by County
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Apr 13, 2022
2021 YTD WNV Activity Map
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Mar 18, 2022
2021 WNV Activity by County
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Feb 04, 2022
2021 YTD SLEV Activity Map
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Jan 11, 2022
2021 US Arboviral Activity Update
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Mar 18, 2022
2020 WNV Activity by County
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Jul 19, 2021
2020 YTD WNV Activity Map
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Jul 10, 2019
2018 US Arboviral Activity Update
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May 16, 2019
2018 YTD WNV Activity Map
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Sep 21, 2018
2017 US Arboviral Activity Update
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Apr 04, 2018
2017 YTD WNV Activity Map
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Jan 12, 2018
2017 YTD SLEV Activity Map
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Mar 08, 2017
2016 YTD WNV Activity Map
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Jan 17, 2017
2016 US Arboviral Activity Update
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Apr 02, 2015
2014 YTD WNV Activity Map
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Feb 25, 2013
2012 YTD WNV Activity Map
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Dec 11, 2012
2012 US Arboviral Activity Update
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Aug 22, 2012
2011 West Nile virus Activity in California
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Jul 11, 2012
1999-2010 Total WNND cases by year
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Apr 17, 2012
2011 US Arboviral Activity Update
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Feb 28, 2012
2011 YTD WNV Activity Map
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Jul 11, 2011
1999-2011 Reported WNV Disease Cases in Humans
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Aug 22, 2010
2010 West Nile virus Activity in California
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Aug 22, 2009
2009 WNV Activity by County
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Jan 21, 2009
2008 WNV Activity Map
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Jan 21, 2009
2008 WNV Activity by County
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Mar 07, 2008
2007 YTD WNV Activity Map
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Jan 28, 2008
2007 WNV Activity by County
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Oct 30, 2007
2003-2007 WNV Activity Summary
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Mar 26, 2007
2006 West Nile Virus Summary Presentation
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Dec 23, 2006
2006 West Nile Activity in California
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Dec 31, 2005
2005 West Nile Activity in California
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Dec 31, 2005
2005 West Nile Virus Summary Presentation
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Dec 31, 2004
2004 West Nile Virus Summary Presentation
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Dec 31, 2004
2004 West Nile Activity in California
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Dec 12, 2004
2004 WNV Agency Survey Report
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Dec 31, 2003
2003 West Nile Activity in California