Food Safety Report: Calamari, Zen Garden, Lower Kabete Road, Nairobi, Kenya 1 year ago • details 3 Suspected food poisoning. Symptoms: Diarrhea, Nausea, Stomach Pain, Chills, Headache Suspected source: calamari Onset: 4 to 12 hours Duration: 12 to 24 hours Sick: Not sure