Vaccinating most of a population helps control a disease because

  1. the pathogen cannot spread easily
  2. everyone gets passive immunity
  3. antibiotics work better
  4. the pathogen mutates
Answer

A) the pathogen cannot spread easily

High vaccination coverage stops transmission. O Level Biology · Topic 12 Disease and Immunity · 12.3 Immunity

Biology MCQ · More O Level Biology: Disease and Immunity MCQs · Practise