cowpox vaccinia牛痘
cowpox vaccination牛痘术
cowpox x牛痘
cowpox virus[病毒] 牛痘病毒;牛痘病毒
N(名词) a contagious viral disease of cows characterized by vesicles on the skin, esp on the teats and udder. Inoculation of humans with this virus provides temporary immunity to smallpox. It can be transmitted to other species, esp cats 牛痘