152 - Comparative West Nile virus surveillance and mitigationstrategies in Maricopa County

Abstract: West Nile virus and other arthropod-borne pathogens in Arizona: Surveillance and mitigation strategies.

Comparative West Nile virus surveillance and mitigation
strategies in Maricopa County

In this presentation we will compare the surveillance and mitigation efforts of the contrasting years of 2021, where Maricopa County, Arizona, experienced the largest West Nile Outbreak in the United States and the current 2022 season, where positive Saint Louis Encephalitis mosquito samples are dominating surveillance numbers. Saint Louis encephalitis reemerged in Maricopa County in 2015 and we have seen concurrent infections in our mosquito populations, since the re-introduction of the virus. We will discuss and compare the mitigation efforts in 2021 and the current mitigation efforts of 2022. We will look at surveillance efforts between the years and track the current and previous positive mosquito samples on a week by week basis. We will also compare human cases between the two seasons and track cases throughout each CDC epi week.