vaccinia

名词 vaccinia:

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
   同义词：vaccina, variola vaccine, variola vaccinia, variola vaccina
2. a viral disease of cattle causing a mild skin disease affecting the udder; formerly used to inoculate humans against smallpox
   同义词：cowpox