什么決定其未來走向？
有兩個關(guān)鍵因素：病毒的傳播性和其毒性。前者就決定了流感傳播的速度以及將有多少人被感染。后者決定了被感染的人有多少人病情危急或是死亡。
What will determine its course?
There are two crucial factors: the transmissibility of the virus, and its virulence. The first will determine how quickly flu will spread and how many people will become infected. The latter will determine how many people who are infected fall seriously ill or die.
有兩個關(guān)鍵因素：病毒的傳播性和其毒性。前者就決定了流感傳播的速度以及將有多少人被感染。后者決定了被感染的人有多少人病情危急或是死亡。
What will determine its course?
There are two crucial factors: the transmissibility of the virus, and its virulence. The first will determine how quickly flu will spread and how many people will become infected. The latter will determine how many people who are infected fall seriously ill or die.