State health officials say they have detected the first batch of mosquitoes this year to test positive for West Nile Virus.
The mosquitoes were collected in Manchester last week. Health officials say the timing of the discovery is in line with when they would expect to see West Nile in New Hampshire.
The state warns that the risk of West Nile will be increased until there is a statewide mosquito-killing frost.
Health officials recommend using mosquito repellant, avoiding being outside at dawn and dusk, and removing standing water from around the home to reduce the risk of contracting West Nile Virus.