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1. Oxford American Dictionary

   community immunity

   • n.
     resistance to the spread of an infectious disease within a community that is based on preexisting immunity of a high proportion of individuals as a result of previous infection or vaccination

   • noun: community immunity, plural noun: community immunities

2. • 釋義

   n.

   名詞

   • 1. resistance to the spread of an infectious disease within a community that is based on preexisting immunity of a high proportion of individuals as a result of previous infection or vaccination their only protection is the community immunity that comes from others who are vaccinated