MINNEAPOLIS (WCCO) — Nearly 50 elementary school students are sick following a trip to YMCA Camp Pepin earlier this week, officials say.

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Farmington Schools Superintendent Jay Haugen said a group of fifth graders from Akin Road Elementary brought the illness – which is reportedly acting like a norovirus – with them to the camp earlier this week.

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The Monday to Wednesday trip ended on a bad note after dozens fell ill on Tuesday night. A second group from North Trail Elementary arrived on Wednesday and went home a day early as a precaution seeing a total of 47 children are now sick.

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Camp Pepin is taking an extra day to thoroughly clean the campsite and Hauger said the camp itself had nothing to do with students getting sick.