Comment Poor food handling, laziness or "convenience" (Score 1) 533
Is cross-contamination the reason so many US "restaurants" serve food with plastic knives, forks, spoons (I've curiously heard them referred to as silverware) and paper plates? Land-fill sites must be huge in the States.
The reuse of plastic bags comes down to sensible food handling practices - nothing more. Your whole process of handling the food needs to be safe - transportation and preparation. Be careful of what you mix, wash food, heat to correct temperature where appropriate. Plus your own personal hygiene...