Ok...here we go again...introducing a topic that should folks convinced that I've jumped off the deep end.
A friend of mine, one Simon Funk, points me at this article on vaccines. Roughly, the line is:
Historical data STRONGLY suggests that fatalities from the diseases we have vaccines for is roughly 99.97% orthogonal to the use of the vaccines. Mortality rates track water quality, sanitation, personal sanitation habits (Which really all track wealth, though the article didn't say that). Vaccines are very simply a very small corner side issue for survival.