Food Safety Report: Walmart Supercenter, North Dirksen Parkway, Springfield, Illinois, USA 1 year ago • details 7 Comments Comment Suspected food poisoning. Symptoms: Diarrhea, Vomiting, Stomach Pain, Cramps, Headache Suspected source: kit kat minis Onset: 1 to 2 days Duration: 12 to 24 hours Sick: 2 people