Variolation n. : Inoculation with smallpox.

Example:
What's the difference between vaccination, Variolation, and inoculation?

Taxonomy
inoculation, smallpox, smallpox inoculation, China, infection, disease, Stress inoculation, Temple, Joseph Needham, scabs, New York, The practice, The Genius, Discovery, Invention, Simon and Schuster, Schuster, Inc, Robert Temple.

Defination from the web:
variolation, inoculation as a method of purposefully infecting a person with smallpox (Variola) in a controlled manner so as ... See vaccination for post-variolation methods of safeguarding as if by inoculation by administering weakened or dead pathogens to a healthy person ...