In July 2017 there was an outbreak of non-O157 Shiga Toxin E. coli (STEC) at a campground in Waterville, Minnesota. Twenty-one outbreak cases were identified. Two people were hospitalized. No one died. Cases were diagnosed with E. coli O111 or E. coli O26. Onset dates ranged from July 8 to August 1.

The campground included a petting zoo and a waterpark. The environmental assessment did not identify any concerns with the food stand or the waterpark. No STEC was found by PCR in well water.

Two hundred eighty-four people were interviewed. Feeding the angora goats, sheep or alpacas were significantly associated with illness.

A total of 24 animal samples were collected and tested at the Minnesota Department of Health Public Health Laboratory. E. coli O145 was isolated from two goats, one sheep and one angora goat. E. coli O26 was isolated from one angora goat, however, it was not a genetic match to the patient's isolate. E. coli O-undetermined was isolated from three additional goats.