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Melanie James2020-09-15T23:09:54-07:00

West Nile Virus Activity

Indicators Placer County* CA*
Mosquito Samples 177 3,983
Dead Birds 43 654
Horses 1 21
Human Cases/Fatal Cases 2/0 153/6
*Last updated 9/20/2023.

Latest News

  • Mosquitoes in Placer County Test Positive for St. Louis Encephalitis Virus September 13, 2023
  • First Human Case of West Nile Virus Reported in Placer County this Summer August 30, 2023
  • West Nile Virus Positive Mosquitoes and Dead Bird Detected in West Roseville June 21, 2023
  • Invasive Aedes Aegypti Mosquito Found in Roseville June 13, 2023

Upcoming Events

16 Oct

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20 Nov

Board of Trustees Meeting

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18 Dec

Board of Trustees Meeting

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15 Jan

Board of Trustees Meeting

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