While it’s true that most Middle Easterners and Africans are pretty tough, I think vaccinations are in relation to local diseases. By that, I mean, some little Honeybee in Ypsilanti, Michigan might not effect the average American citizen especially, if you’ve been stung by genetic cousins of that Honeybee a few times before. Your body already has a base of resistance to build on. Whereas some of these gigantic and ‘exotic’ for lack of a better word bugs and sand dwelling weevils over there,, would present an entirely new chemical compound of venom into the interior of your body. So the multitude of shots is to prepare your system for what it has never likely encountered before, and I quickly add, this is only my opinion. I could be way off.
As an older person now I plan on traveling to the one country I don't know very well: the USA, trips: down the Mississippi, Virginia, Washington D.C. and such. I'm looking forward to it...and no shots. :o)