FF, in the end did you end up traveling in Asia?
If you are really thinking of going to Latin America, you will need to make an appointment at a travel clinic of a hospital to get reliable advice of what vaccinations to get. A proper clinic will be able to suggest water treatment methods as well, and advice for specific countries and areas within countries, just as they will with vaccines.
Budget a couple of hundred for all of this. Ish
I had a fee for the consult, and specific prices for specific vaccines and follow-ups.
And do it well in advance of the trip, some vaccines require a follow up shot X weeks after the first.
Do you have this trip planned or is this just an idea at this point?