But the current swine flu is a new strain to which humans have no immunity and against which existing vaccines offer no protection.

VOA: standard.2009.04.30

One, developing ways to understand how humans work better, how human physiology operates, and second, developing new approaches for replacing function in people when they're sick.

一,开发新方法更好的了解身体的运作,以及生理过程是怎样发生的,二,当人机体发生病变时,找到方法替代病变器官的功能

耶鲁公开课 - 生物医学工程探索课程节选

Preliminary phase one tests of this new type of flu vaccine have already started in humans, but in an interview, Nabel said that even if all goes well, it will still be years before a universal flu vaccine is widely available.

VOA: standard.2010.07.21