it is not because of the workers, and it is not because of dominicans or haitians aso present.
it is always because we frequent areas where many nationalities are present, each of them has their own 'bacterias' which they are more immune to and others which they are very vulnerable to. a turist area is of course a top spot in case of all diseases this globe knows about, they are ALL Present, always, and the risk that we get in touch with some is very high, so the well known preparations/shots should be done before thinking about to meet hundresd.thousands of people from all over the planet under numerous circumstances where body fluids aso get exchanged even that we often don't know/think about it.
i am not talking about the obvious like sex, i am talking about the simple all day stuff like grabbing a plate at the buffet restaurant, you don't know which visitor who may be immune or not to something grabbed it a moment before you but left it there, so that you are the next whou touches what he left there, the same when touching anything at a bathroom aso aso aso.
even more dangerous are the flights, 300 people and just around 6 toilets, make an average count of how many people out of 300 have some kind of decease.
Mike