WNV DETECTIONS BY COUNTY

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*Disclaimer:  Health officials use the combination of WNV test results in mosquitoes, birds, horses, and humans, to estimate WNV activity levels in Wyoming counties.

These data summarize voluntary reporting of WNV mosquito test results to Wyoming Department of Health by county mosquito control officials, voluntary reporting of bird and animal results by veterinary health care providers, as well as the mandatory reporting of WNV human test results by healthcare providers. Empty data cells may reflect a county’s decision not to report mosquito or bird or animal test results or a lack of capability to test mosquitoes for presence of WNV. 

During recent years, WDH has documented West Nile virus activity in every Wyoming county. Despite local mosquito trapping and testing efforts, WNV transmission may occur undetected.  Negative test results or empty data cells in a given county do not necessarily indicate an absence of WNV. For more information on WNV activity in Wyoming, surrounding states, and the US, please visit the Wyoming Department of Health West Nile Virus website: www.BadSkeeter.org, and the CDC West Nile Virus website: www.cdc.gov/ncidod/dvbid/westnile/index.htm.