单词 | variolation |
释义 | variolation (once / 3939771 pages) n Variolation was the original way that doctors immunized people against smallpox. The process of variolation involved infecting a healthy person with tissue or fluid of a person with smallpox. Variolation required the healthy patient to have tissue from a person with active smallpox (or who had recovered from smallpox) inserted into scratches on the skin. When variolation was "successful," the patient had a very mild case of smallpox, a disease which was often deadly. Ultimately, this method was found to be ineffective, and it was replaced in the late 1700s by the smallpox vaccine. Variolation comes from variola, "smallpox," and the Latin varius, "changing" or "spotted." WORD FAMILYvariola: variolas, variolation, variolization USAGE EXAMPLESGeorge Washington, realising the risk, ordered mass variolation of his own troops - an action that no doubt helped win the war. BBC(Dec 07, 2013) The procedure, called “variolation,” involved piercing the skin of the patient with needle that was contaminated with small pox. Scientific American(Oct 17, 2013) Variola vaccine—i.e. the virus of an affection of the cow resulting from variolation. Various, A System of Practical Medicine by A...(2012) n the obsolete process of inoculating a susceptible person with material taken from a vesicle of a person who has smallpox Syn|Hyper variolization inoculating, vaccinating the act of protecting against disease by introducing a vaccine into the body to induce immunity |
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