Food Safety Report: McDonald's, 5990 Avenida Encinas, Carlsbad, CA 92008, United States 5 months ago • details 38 Suspected food poisoning. Symptoms: Fever Suspected source: i thinj im going crazy and i rthink its bc i ate a mcdondals burger Onset: 4 to 12 hours Duration: 12 to 24 hours Sick: 3 people Additional information: !!!!!!i think ira breaking my brain