群体免疫 qúntǐmiǎnyì herd immunity Definitions Defs Origin Strokes Stroke Words Sentences Sents 群体免疫 群體免疫 qúntǐmiǎnyì herd immunity Resistance to the spread of an infectious disease within a population that is based on the pre-existing immunity of a high proportion of individuals.
群体免疫 群體免疫 qúntǐmiǎnyì herd immunity Resistance to the spread of an infectious disease within a population that is based on the pre-existing immunity of a high proportion of individuals.
