Southwest District Health officials say mosquitoes collected in a trap in the Sweet area in Gem County have tested positive for the West Nile virus.
The health district placed traps in six locations within the Sweet, Ola, and Montour area and will continue monitoring weekly. The Sweet pool is the first to test positive in the area this year.
West Nile virus is a potentially serious illness that is usually spread to animals and humans through the bite of an infected mosquito. No human cases have been reported in Idaho so far this year.