“There is no question but that perfect sanitation has almost obliteraed this disease, smallpox, and sooner or later, will dispose of it entirely. Of course when that time comes, in all probability, the credit will be given to vaccination.” — John Tilden M.D Copy Share Image
“There is no question but that perfect sanitation has almost obliteraed this disease, smallpox, and sooner or later, will dispose of it entirely. Of… — John Tilden M.D Copy Share Image
