I guess there will always be the 'fear of the unknown' Pulisa.
But as already mentioned, rigorous cleaning and hygiene practices are now pretty much routine in such places. Plus the authorities and the local media would no doubt woe betide them and take them to court if they were caught foul of poor practices of hygiene and general cleanliness, especially in today's rampant suing culture, and of course not forgetting the H & S culture.