I paid 15 dollars retail for a flu shot today. The estimated actuarial price of a human life is approximately 10 million dollars. (http://en.wikipedia.org/wik

I paid 15 dollars retail for a flu shot today. The estimated actuarial price of a human life is approximately 10 million dollars. (http://en.wikipedia.org/wiki/Value_of_life http://en.wikipedia.org/wiki/Value_of_life) So in principle flu shots like mine are "worth it" if it has a greater than 15 in 10 million chance of saving a life -- either mine or someone I might infect. So, yes, for the price of a single life we could immunize about 600 thousand people. That's probably enough for herd immunity in an entire population for some region (like an entire state). Such a measure is bound to save more than one life.