እንደነዚህ ያሉ ስኬቶች ከተሰጡን ፣ "እኛ በጭራሽ የማናያቸው በሽታዎችን ለምን እንከተላለን?
Given successes like these, it might seem reasonable to ask, "Why should we keep vaccinating against diseases that we will probably never see?"