Beef Burrito Illness Mystery - Taco Bell,

I ate a beefy crunch burrito, within 6 hours I was nauseous, followed with chills, which led to vomiting. My girlfriend ate taco bell, except ordered a beefy 5 layer, sub beans for beef and didn't get food poisoning. | Symptoms: Nausea, Fever, Vomiting, Chills