Food Safety Report: Avocado, Big Y World Class Market, Storrs Road, Mansfield Center, Mansfield, Mansfield Center, CT, USA 1 year ago • details 6 Suspected food poisoning. Symptoms: Nausea, Vomiting, Cramps, Headache Suspected source: avocado Onset: Less than 4 hours Duration: 4 to 12 hours