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County health officer urges mosquito surveillance program after West Nile spike; Weed and Pest, Powell support pilot plan
Summary
Dr. Aaron Billen outlined data showing Wyoming recorded 14 West Nile cases in 2025, including two deaths statewide and one local neuroinvasive case in Cody; he proposed a five-site county surveillance program using CDC light traps, volunteer trap managers, microscope sorting and free PCR testing by the state lab; Park County Weed & Pest and city of Powell staff described costs, staffing constraints and possible grant funding.
Dr. Aaron Billen, Park County chief health officer, presented data and a proposed pilot mosquito surveillance program to the Board of County Commissioners.
Billen told the board that, in 2025, Wyoming had 14 reported West Nile virus cases and two deaths statewide; Park County had one neuroinvasive case treated at Cody Regional Health Center. He said late-summer and early-fall months typically show most human cases and described how light traps baited with carbon-dioxide (dry ice) can capture Culex mosquitoes for pooling and PCR testing at the Wyoming Public Health Laboratory in Cheyenne.…
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