“Death due to infectious diseases in infancy and childhood remains perhaps the cruelest fate in the modern world, and one of the most preventable. Measures needed to minimize this untimely mortality cannot be ranked as to their importance: clean drinking water and adequate nutrition are as vital as disease prevention and proper sanitation. But if you judge them by their benefit-cost ratios, vaccination is the clear winner.”
Excerpt From: Vaclav Smil. “Numbers Don’t Lie.”