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Variola vaccine
/vˌeəɹɪˈəʊlə vaksˈiːn/
/vˌɛɹɪˈoʊlə væksˈiːn/Variola vaccine
01
a local infection induced in humans by inoculation with the virus causing cowpox in order to confer resistance to smallpox; normally lasts three weeks and leaves a pitted scar
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