Food Safety Report: McDonald's - Largo do Chiado, Largo do Chiado, Lisbon, Portugal 5 months ago • details 27 Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting, Chills Suspected source: Eating a hamburger and fries from McDonald’s Onset: 12 to 24 hours Duration: Less than 4 hours Sick: Me