Yogurt Illness: E.coli Suspected - Probiotics, Québec Québec

Québec, Québec, Canada

I bought Activia 700g health care yogurt specially at Super C and we were all sick (for hours). I thought it was gastroenteritis and I was sick again eating it. Can there be eucoli for example? | Symptoms: Nausea, Diarrhea, Vomiting, Something else, Stomach Pain, Cramps, Chills, Headache, Gas