.... by trial and error, six months was a bit young to camp out in remote beaches... while out daughters were really young and still breast feeding, they had excellent resistance to many diseases... Even when my wife (and I) had giardia or dysentery, our children were fine.... many (but not all) local medical clinics...are good and have helped many expat children.... my daughters are fearless and safe travelers.
Similarly, my cat is not the least bit fearful of my 1911 pistol, either. But, the above quote was a resounding accolade for the survivability of
some infants.
Your results may vary.
.... the possibility of a sick child needing medical care may lead many parents to stick to places where modern high-quality health care is close at hand....
It may, indeed. More likely not.
In that the OP related to SE Asia, I can best relate to the specific information I know about our back yard of the Caribbean.
If I had a very sick infant, which Island would I fly off to seek treatment? (I'm thinking Long Island, the one in New York) Okay, if you really want to know? Cayman, Nassau, ummmm, that's about the end of the list.
I arrange and lead trips for some of the 1%. I provide them with very specific estimates of
the time required to get from "here" to Miami or Houston via air-evac ambulance, buying insurance for that. If nothing else, I ask them what kind of time & space proximity they want to maintain to their own private family aircraft that they last
saw at our island of embarkation. Some folks have no concerns, some are quite proactive. On the far end of that pro-active scale are the grandfatherly hosts of the family outing who have two or more generations of offspring aboard. They get really pro-active in terms of security and medical.
But- the beauty of parenthood lies in the plain fact that the parents have the freedom expose the child to whatever situation, both known and unknown, relying upon their guide, or simply
The Jenny McCarthy School of Medicine, University of the Googles.
Somehow, the most of us survive, and at least we survive to tell the tale. Others, not so much.