Both averagejoe and apolo72 raise interesting questions regarding sanitation standards in today's world. I took up safety and sanitation matters after a forced retirement from a previous job dealing with employment training. In terms of sanitation, I found that the lowly cockroach is perhaps one of the main challenges to our modern food chain. I do not believe that we, in America have relaxed our standards; ask any food producer in California. The greater expense lies in combating the lowly cockroach, ants and rodents that spread colonies of new, pesticide-resistant insecticides.
Apolo72 correctly believes that we "place a lot more focus on food sanitation than we did in the past", partly because of our effort to combat disease and partly because contaminants find natural methods to protect themselves from our sanitation efforts. I believe that we are undoubtedly much cleaner today than a few decades past. However, mother nature in her divine wisdom allows her creatures to thrive. --Chaleese