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Mosquitos With West Nile Virus Found In Weld County

Centers for Disease Control and Prevention

Weld County health officials have detected cases of West Nile Virus in local mosquito traps.

Tracking began in June and the first positive samples came back July 27. Surveillance has also shown a group of mosquitoes with the virus in Berthoud.

Officials say there has been a delay in identifying mosquitoes with West Nile Virus because the state lab is also conducting COVID-19 testing. Initial symptoms of the virus can include fever, headache, nausea, muscle aches and rash.

Larimer County traps have also shown West Nile Virus positive mosquitoes in southeast Fort Collins and Loveland.

There are no human cases of the virus in Weld County — and only one in all of Colorado currently. Last year, there were 122 cases in the state, 16 of which were in Weld and Larimer counties.