Yeah, I always assumed food-borne illnesses were bacterial whereas the contagious 'stomach flu' was viral.
I had food poisoning over this past New Years and it was among the worst few days of my life. I felt sick within 10 minutes of eating a Tri-Tip sandwich my friend recommended and couldn't even make the drive home without pulling to the side of the road to puke again. My New Years Day was spent curled up in bed listening to Bowl games since I couldn't even bring myself to watch tv.