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Screenshot 2026-09-09 083539

Screenshot 2026-09-09 083539

Kathleen Lawhead2026-09-09T08:35:57-07:00September 9, 2026|

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West Nile Virus Activity (2026)

Indicators Placer County* CA*
Mosquito Samples 112 4,005
Dead Birds 9 734
Horses 1 17
Human Cases/Fatal Cases 2/0 378/23

*Updated 10/16/2026

Latest News

  • First human case of West Nile virus this season in Placer County September 24, 2026
  • West Nile Virus Positive Mosquitoes Found in West Placer County Area July 8, 2026
  • Placer County confirms first West Nile virus death of season October 6, 2025
  • First Human Case of West Nile Virus Reported in Placer County This Summer August 29, 2025

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