While the avian influenza virus rarely infects people, experts say they fear it could mutate into a form people could easily pass to one another, sparking a pandemic that could kill millions.

• 其实禽流感甚少传染人类；但专家担心在它的变异传染特定人群后会极易造成人与人之间互相传染；到时侯如果产生全国性的暴发将会使上百万人丧命.