Glad you accepted your errors and that you even linked to this post 👍
anti-vaxxers are barbaric by any means.
At least most of them probably are not. I believe most of them are just doing what they think is the best for their and their kids health. However that still doesn't mean they are right.
Who I really have no respect for however, are those, who will just say everything is corrupt and don't even consider thinking about any serious scienctific studies. Some are just ignorant people who are pretty much against everything. Some even are probably just anti-vaxx because it is cool in certain communities and they get popular by shouting loud against the corrup pharma industry.
You seem to be a young guy who wants to learn - this is great keep it up. Google selection bias and really think about that concept. It's one of the biggest problems when dealing with the tons of information the internet offers to everybody - If you are not careful, you will find followers and others for every shitty idea you can even imagine.
In my island of Bali many of the tourists came originally for a week, but end up staying for years, making visa runs to neighboring asian countries so it may be more feasible here.
I don't have numbers - But i doubt that so many people don't travel back home, that it effects the effect in any significant way.