You know, seriously - Lime makes a good point.

I understand that mass vaccination programs would statistically prevent 60 million deaths a year, but before I would really throw my support behind them, I would have to see how many deaths a year are attributable to poor quality drinking water or famine - I would imagine basded on my knowledge of the third world condition that this would be much higher. And death from gastro that results from contaminated water is in many ways much more of a certainty than the risk of death from a vaccine preventable disease such as measles.