群体免疫

herd immunity

variant of 群[qun2]

group / crowd / flock, herd, pack etc

community / colony

body / form / style / system / substance / to experience / aspect (linguistics)

to excuse sb / to exempt / to remove or dismiss from office / to avoid / to avert / to escape / to be prohibited

old variant of 絻[wen4]

immunity (to disease)

epidemic / plague