PIERRE, South Dakota, June 15 -- The South Dakota Department of Health issued the following news release: * * * Brown County Mosquito Pool First West Nile Detection of Season 2026 The South Dakota Department of Health has confirmed the first West Nile virus (WNV) mosquito pools of the season have been detected in Brown County. State officials urge the public to take steps to protect themselves and their families against WNV, which can cause fever, headaches, rash, swollen lymph nodes, and mus  more