Food Safety Report: Hakone Suimeisou, 702 Yumoto, 箱根町 Hakone, Kanagawa, Japan 9 months ago • details 1 Comments Comment Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting, Stomach Pain, Cramps, Chills Suspected source: Yogurt Onset: Less than 4 hours Duration: 4 to 12 hours