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.
英
美
- 其實(shí)禽流感甚少傳染人類(lèi)；但專(zhuān)家擔心在它的變異傳染特定人群后會(huì )極易造成人與人之間互相傳染；到時(shí)侯如果產(chǎn)生全國性的暴發(fā)將會(huì )使上百萬(wàn)人喪命.
