[pizzetta]

That only goes so far. One only has to look into "gutter oil"(1) to see that reputation is not always paramount in vendors' minds.

(1)https://en.wikipedia.org/wiki/Gutter_oil

Also, the GI tracts of people in developed nations are more susceptible to some pathogens than people who have been exposed to those pathogens from an early age and have survived those pathogens in their foodsource.