Food Safety Report: McDonald's, East Mount Vernon Boulevard, Mount Vernon, MO, USA 2 years ago • details 4 Comments Comment Suspected food poisoning. Symptoms: Diarrhea, Nausea, Cramps, Chills, other: dizziness Suspected source: nuggets or fries Onset: Right away Duration: Several days Sick: 2 people Additional information: Husband and I both… See more