The human rights community has focused very narrowly on political and civil rights for many decades, and with reason, but now we have to ask how can we broaden the view.

It is clear that the pharmaceutical industry is not, by any stretch of the imagination, doing enough to ensure that the poor have access to adequate medical care.

We've taken on the major health problems of the poorest - tuberculosis, maternal mortality, AIDS, malaria - in four countries. We've scored some victories in the sense that we've cured or treated thousands and changed the discourse about what is possible.

What I can argue is that no one should have to die of a disease that is treatable.

The idea that because you're born in Haiti you could die having a child. The idea that because you're born in you know Malawi your children may go to bed hungry. We want to take some of the chance out of that.

You can't have public health without working with the public sector. You can't have public education without working with the public sector in education.

The biggest public health challenge is rebuilding health systems. In other words, if you look at cholera or maternal mortality or tuberculosis in Haiti, they're major problems in Haiti, but the biggest problem is rebuilding systems.