Food Safety Report: California Pizza Kitchen at Simi Valley Town Center, Simi Town Center Way, Simi Valley, CA, USA 1 year ago • details 20 Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting, Stomach Pain, Cramps, Chills Suspected source: Guacamole Onset: 4 to 12 hours Duration: 12 to 24 hours