![More Than 170 Ill after Boating on Lake Minnetonka](http://townsquare.media/site/67/files/2017/07/Wetland-Lake.jpg?w=980&q=75)
More Than 170 Ill after Boating on Lake Minnetonka
MINNEAPOLIS (AP) -- Hennepin County officials say they still don't know why more than 170 people got sick after boating near Big Island in Lake Minnetonka last weekend.
Officials have interviewed 225 people and have confirmed that 172 of them were near Big Island over the July Fourth holiday and became sick with vomiting, diarrhea or both.
Hennepin County Public Health epidemiology manager Dave Johnson says the illness does not seem to have spread since then. He says most people were sick for a few days and have recovered.
But the illness is a mystery. A test of one person's stool came back negative on all 22 viruses, bacteria, and parasites that typically lead to diarrhea and vomiting.
Johnson says people should not swim if they are sick and "don't use the lake as a toilet."
More From AM 1240 WJON
![Shooting Death Marks First Homicide of Year in Minneapolis](http://townsquare.media/site/67/files/2019/01/Police.jpg?w=980&q=75)
![Baby Taken From Mother in Stolen Car Found Safe](http://townsquare.media/site/67/files/2019/12/Police-lights.jpg?w=980&q=75)
![St. Paul Teachers, Schools Enter Talks For New Contact](http://townsquare.media/site/241/files/2021/02/shutterstock_1746069446-scaled-e1598542685915.jpg?w=980&q=75)
![Crews Douse Fire at Federal Reserve Loading Dock](http://townsquare.media/site/67/files/2020/05/Fire1.jpg?w=980&q=75)
![St. Paul Man Dies Seven Days After Reporting Assault](http://townsquare.media/site/67/files/2019/02/Crime-tape.jpg?w=980&q=75)
![St. Anthony Police Investigating Man Found Dead as Homicide](http://townsquare.media/site/67/files/2019/02/Crime-tape.jpg?w=980&q=75)
![Minneapolis School Bus Drivers Say They’re Ready to Strike](http://townsquare.media/site/65/files/2021/09/attachment-maxim-lopez-bqfkKohIFYw-unsplash.jpg?w=980&q=75)
![Hennepin Medical Examiner Seeking to Identify Woman’s Body](http://townsquare.media/site/67/files/2021/09/attachment-GettyImages-1220495008.jpg?w=980&q=75)
![Minnesota Governor Tim Walz Departs for European Trade Mission](http://townsquare.media/site/67/files/2021/05/Tim-Walz1.jpg?w=980&q=75)