Epidemiologists have warned that the next pandemic could sicken one in every three people on the planet, hospitalize many of those and kill tens to hundreds of millions.

• 流行病学家警告，下一次的全球流感可能使全世界每三人中就有一人罹病，其中有许多患者的病情将严重到需要住院，死亡人数从数十人到数亿人都有可能。