However, although all the ingredients for a killer-virus scenario do undoubtedly exist, it’s hard to find a medical expert who believes it’s likely that the entire human race will be wiped out by one lethal strain. They tend to put it on a par with the likelihood of us being exterminated by a killer asteroid impact. This is because, although viruses can be super-efficient at attacking larger organisms, our bodies are phenomenally good at protecting us.
然而，尽管造成杀手病毒侵袭的各种可能性确实存在，却很少有医学专家相信整个人类将被一种致命病毒所毁灭。他们往往认为，这种可能性与人类被小行星撞击毁灭的可能性不相上下。这是因为，虽然病毒对大型生物的侵袭可能及其高效，但我们的身体具有非凡的自我保护功能。
