Food Safety Report: Liberty Point, South Christopher Columbus Boulevard, Philadelphia, PA, USA 1 year ago • details 27 Comments Comment Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting, Cramps Suspected source: Beef taco Onset: 4 to 12 hours Duration: 12 to 24 hours Sick: 2 people Additional information: Happened over two months ago.