I once got very ill at one of those sports bar chains when I was travelling through richmond, VA. Chicken wings.... The only good part of that experience was throwing up on a security guard, but they almost took me to the hospital.
another thing to be very carful abt is fruit. On my last trip with my wife, we ended up having some melon chunks (shrinkwrapped, and chilled). Unfortunately, my wife caught a piece that made her very sick on a trans-continental flight. JFK -> SEA.
you are better off getting whole fruit every time