Food Safety Report: Giant Eagle Supermarket, Mountain Laurel Plaza, Latrobe, PA, USA 2 years ago • details 10 Comments Comment Suspected food poisoning. Symptoms: Diarrhea, Nausea, Stomach Pain, Cramps, Headache Suspected source: Blueberry muffins Onset: 4 to 12 hours Duration: 12 to 24 hours Sick: 2 people Additional information: Bakery 4 pack of blueberry muffins.