According to a story in the Billings Gazette, at least 12 people have been hospitalized with Shigella infections since an outbreak began in Wyoming a few months ago. “The number of people coming down with shigellosis, a gastrointestinal infection caused by bacteria, has grown to at least 35 as of Monday, according to the Indian Health Service and the Wyoming Department of Health,” the Gazette reported.

A Wyoming Department of Health spokesperson said that the majority of ill people are school-aged children.