South Dakota health officials say the state's third death from the West Nile virus this season happened in Minnehaha County.
The Health Department says the person was older than 75, and died the last week of September.
The agency does not release the names of West Nile victims. The previous two deaths were in Hughes and McPherson counties.
Nearly 200 West Nile cases have been reported in South Dakota this year. The state ranks first in the nation in cases per capita, with about 21 infections for every 100,000 people.