Food Safety Report: McDonald's, Southern Way, Harlow, UK 1 year ago • details 5 Comments Comment Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting, Fever, Stomach Pain, Chills, Headache Suspected source: McDonald’s milkshake Onset: Less than 4 hours Duration: 12 to 24 hours Additional information: I’m never eating McDonald’s again