The patient has contracted a fatal illness. There is little chance of his recovery.

这个病人已病入膏肓， 没有多少痊愈的希望了。

In some cases, the infections process may result in severe or fatal illness.

有些情况下，感染过程可以导致严重的或致命的疾病。

A large number of once fatal illness can now be cured by modem drugs and surgery.

许多一度被认为是不治之症的疾病，现在可以用药物和手术来治愈了。

Data continue to show that certain medical conditions increase the risk of severe and fatal illness.

数据继续显示，某些病症会加大严重和致命疾病的风险。

This is true for those most frequently infected, and especially so for those experiencing severe or fatal illness.

对感染最多的人群是这样，尤其是对出现严重或致命疾病的人群。