病毒为何致命 / Why Do Viruses Kill (2010)

　　Just months ago, the world stood in fear of an emerging new disease that threatened to kill millions. A new flu variant H1N1 had arrived. In the UK alone, 65,000 deaths were predicted. Yet to date, these dire warnings have not materialised.

　　If this latest pandemic has taught anything, it is just how little is understood about the invisible world of viruses. But that has not stopped scientists trying.

　　Horizon follows the leading researchers from across the world, who are attempting to unravel the many secrets of viruses to understand when and why they kill.

　　

　　译文(3): 就在几个月前，世界还对一种可能导致数百万人死亡的新疾病感到恐惧。一种新的流感变体H1N1已经出现。仅在英国，预计就有6.5万人死亡。然而，到目前为止，这些可怕的警告还没有实现。