Translation guide
Variolation refers to the historical practice of inoculating a person with material from a smallpox pustule to induce a mild infection and subsequent immunity. In Japanese, this is expressed with specific medical-historical terms.
The deliberate inoculation with smallpox virus to confer immunity, as practiced before modern vaccination.
Standard term for variolation, literally 'human pox inoculation method'. Used in historical and medical contexts.
Variolation was performed to prevent smallpox.
Abbreviated form of 人痘接種法, meaning 'human pox method'. Common in historical texts.
Descriptive phrase: 'smallpox variolation'. Used when clarifying the disease.
Variolation (人痘接種法) used live smallpox virus, while vaccination (ワクチン接種) uses cowpox or modern vaccines. Do not confuse the terms.
Variolation was introduced in the Edo period.
Smallpox variolation carried risks.