[医] 牛痘
1. 牛痘病：vaccina 牛痘病 | vaccination 接种 | vaccine 菌苗
noun
1. 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
Synonym: vaccinia variola vaccine variola vaccinia variola vaccina