The Rhode Island Department of Environmental Management says three people contracted cryptosporidiosis after attending "pet and cuddle" events at the Simmons Farm. The events were held March 25 and March 31.
One child and two adults have been diagnosed with the disease, which is treatable and usually cured within two weeks. The state is warning anyone who has visited the farm to monitor for symptoms, including diarrhea and abdominal pain.
The farm's animals must be kept away from the public until the quarantine is lifted.
State Veterinarian Scott Marshall says exposure to pathogens is an inherent risk of petting zoos.
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