The global journey of variolation
Mariel Tishma Chicago, Illinois, United States A human hand with smallpox pustules. Colored etching by W.T. Strutt. Credit: Wellcome Collection. Attribution 4.0 International (CC BY 4.0) Humanity has eliminated only one infectious disease—smallpox. Smallpox is a very old disease and efforts to prevent it are almost as old. They included a technique called variolation, also […]