You are viewing a single comment's thread from:RE: Because I can't Post This On FacebookView the full contextView the direct parentbuilderofcastles (71)in #informationwar • 4 years ago That is/was real life. People infected themselves with cowpox to immunize themselves from smallpox.
And it didn't work. They also were mixing it with puss from horses hooves to make it more effective. Right up there with leeches.