"In the most deadly variety of smallpox, the hemorrhagic form, called the bloody pox or black pox, the skin turns a deep purple or takes on a charred look, and comes off in sheets. The victim often "bleeds out," blood pouring from every orifice in the body. It is extremely contagious. Unlike most other viruses, smallpox can survive and remain virulent for months or years outside the body in clothing, blankets, and sickrooms."