If you can block one of those people from getting the vaccine, you also stop-- from getting the disease-- you also stop all the people they would have transmitted it too from getting a disease.
如果你可以防止一个人感染疫苗,你同样可以防止...,刚才应该是感染疾病...,你就同样可以防止所有,可能已经接触过病毒的人群患病
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