Reply #31: I've already given you one for real medicine [View All]

[Confusious]

The elimination of smallpox, which killed hundreds of millions through the history of the human race, if not into the billions.

In Europe, near the end of the eighteenth century, the disease accounted for nearly 400,000 deaths each year, including five kings. Of those surviving, one-third were blinded. The worldwide death toll was staggering and continued well into the twentieth century, where mortality has been estimated at 300 to 500 million. This number vastly exceeds the combined total of deaths in all world wars.