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West Nile virus Testing

May contain: insect, invertebrate, animal, and mosquito

West Nile virus (WNV) is primarily a bird - mosquito - bird disease which sometimes spreads to humans and other animals through a bite from an infected mosquito. In Davis County we have two known vectors for WNV, Culex pipiens and Culex tarsalis. We monitor and test these species to identify when WNV appears in the mosquito population. Due to the natural landscape of our county, we have large areas of prime habitat for mosquito and bird interaction. Thanks to this prime habitat we have an increased potential for the mosquito population to acquire WNV.

Our mission at MAD-D is to identify when the mosquito population starts to carry WNV and work to minimize the risk to the human and horse population with an intensified integrated mosquito management (IMM) approach. By doing this we hope to be able to reduce the risk of WNV to the public.

We are blessed to be able to do in-house testing for WNV. By doing testing in-house we gain the benefit of fast and direct notification of positive mosquitoes, usually within 24 hours of the mosquito being trapped. With the results being available so quickly we can more efficiently activate our response to the increased risk.

We report all positive WNV tests results to the Utah Department of Health, who in turn reports the results to the CDC.

Links to the most recent West Nile virus data.

Davis County: Current West Nile Conditions

State of Utah: West Nile Virus Reports – Bureau of Epidemiology (utah.gov)

CDC: West Nile Virus Disease Cases by State 2021 | West Nile Virus | CDC