First, flu-like symptoms emerge -fever, aches, pains, nausea. Exhaustion soon follows. It's not until a few days later when the telltale, flat, red spots appear about the face, hands, and arms. The spots evolve into pus-filled blisters that scab first and then fall off, to reveal deep, pitted scars. Smallpox was one of history's most…Read more Worries of the Past: Smallpox and Boston’s Epidemic of 1872