Food Safety Report: OiO - Osteria con Cucina, Montée de Clausen, Grund Luxembourg 2 years ago • details 6 Comments Comment Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting, Stomach Pain, Cramps Suspected source: Mussels Onset: 4 to 12 hours Duration: 12 to 24 hours