Old Oil Suspected Poisoning - McDonald's, Altkirch Grand Est

8 Zone Industrielle Nord, Altkirch, 68130 Grand Est, France

We were 3 hungry paramedics, we ate and 2 hours after nausea vomiting and all the symptoms of food poisoning.
Frying??? Fries and potatos are certainly not going to pass because of the oil.
Oil not changed??? | Symptoms: Nausea, Diarrhea, Vomiting, Stomach Pain, Cramps