Food Safety Report: Jimmy John's, Concord Parkway North, Concord, NC, USA 1 year ago • details 39 Comments Comment Suspected food poisoning. Symptoms: Nausea, Stomach Pain, Cramps Suspected source: Roast beef Onset: Less than 4 hours Duration: 12 to 24 hours Sick: Me Additional information: Roast beef sub purchased… See more