Food Safety Report: Whataburger, University Boulevard, Round Rock, TX, USA 1 month ago • details 269 Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting, Chills Suspected source: Fast food, Burger, shake, and fries Onset: 12 to 24 hours Duration: 12 to 24 hours Sick: Me Additional information: This was during November of 2023