I remember that was a major point made during our parasitology lectures.
While intestinal parasites are generally seen as a symptom of poverty, in Western Europe and the US, it's often the reverse, since it's rich people who eat things like steak tartare, smoked salmon, and so on. Traditional cuisine (big lumps of meat thoroughly cooked) is for poor people who, advertently or otherwise, cook their food for long enough to kill off the parasites.
I may be regarded as a Philistine for taking my steak well done, but I can live with that (oh, and freezing is also an excellent way to do the same thing).