Food Safety Reports: Central Park, New York, NY, USA

I am coeliac I got a hamburger with a gluten free bun . That evening I had to call 911 and go to hospital with severe cramps and vomiting . I am a visitor from England - we had been to Central Park and headed out behind the big Museum to look for somewhere to eat so it was on a road close to there  | Symptoms: Nausea, Vomiting, Cramps