Hi, I live in the third world, so send him off to me.
I can show him all the polio beggars at the street junctions. He should talk to them for a bit, how but for a few bitter drops on their tongues from a clinic, they would have jobs, wives and children instead of living marginalised on the edge of society. He could marvel at the ingenuity which which they get around!
Then, we can go off to the tuberculosis wards, a disease which came very close to being eradicated in my country, but sadly now with AIDS is rapidly becoming resistant to drugs (and imported into the UK BTW). I am sure there will be a couple there who would conveniently die as he watches. If that doesn't impress him enough, we could go back to the streets so he can see the hunchback beggars whose spines have been twisted by TB.
The best baby to watch with whooping cough, is a white baby. See, they go blue as they are gasping for breath. (Whooping cough is horrendous).
'Being anti-vaccination' is about the most spoiled self-indulgent Western middle class attitude I can think of. (What I am describing is what I see every day, except the TB deaths which I just hear about, it really isn't being sensationalist). It really does make my blood boil. You don't have these deformities in England, why? Because of the vaccination programme.
A little dose of REALITY of what these diseases really do to people, is what is required.