KELLER, Texas -- The Tarrant County Public Health Department confirmed the county's second human case of West Nile virus in the city of Keller.

The patient, a man in his 60's, lives in unincorporated Tarrant County west of U.S. 377 and north of Wall-Price Keller Road.

Due to the incubation period of West Nile virus, it is impossible to know where or when the affected resident was bitten, said James Whitt, environmental services coordinator for the city of Keller. At this time, the county has not recommended that the city take any action with regard to mosquitoes beyond our normal practice of source reduction and trapping.

According to county public health data, no mosquitoes trapped by either the city or county near this location or anywhere else within the Keller city limits have tested positive for West Nile this year, the health department said in a news release.

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