edgar allan poe wrote -- >> the beautiful lady, how could she die? and of consumption? but it is a path i pray to follow he and i wish that all i love could perish of this gentle disease. >> while taking away from a plague is appealing, it does not cure the disease. >> leprosy. >> lepers were left to die. until the arrival of father. >> he cared for the sick by teaching them to farm and leading them in work shifts. >> once he contracted the disease, he began the service and would continue to do so until his death. >> typhoid. >> mary, how ice cream killed thousands. >> salmonella is a bacterial disease easily neutralized by the cooking process. unfortunately for mary and her clients -- >> they stung. >> she specialized in the concocting of ice cream. >> mary was immune to this disease, but boy, could she spread it. >> boil it, cook it, peel it or toss it. >> is calmly used used today. >> what have we learned through thousands of years of fighting this? >> from the plague that we need a strong central threered minimize panic. >> we learned what not to do. >> smallpox. >>