Food Safety Report: Culver's, East Main Street, Merrill, Wisconsin, USA 2 years ago • details 9 Comments Comment Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting, Fever, Stomach Pain, Cramps, Chills Suspected source: Fish dinner from here Onset: Less than 4 hours Duration: Several days Additional information: I've never felt so awful in my life.