At the same time, it is obvious that clinicians in Haiti are faced with different, and, in fact, greater, challenges when attempting to treat complications of HIV disease.

The only way to do the human rights thing is to do the right thing medically.

lean water and health care and school and food and tin roofs and cement floor, all of these things should constitute a set of basics that people must have as birthrights.

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.

For me, an area of moral clarity is: you're in front of someone who's suffering and you have the tools at your disposal to alleviate that suffering or even eradicate it, and you act.

I think we will see better vaccines within the next 15 years, but I'm not a scientist and am focused on the short-term - what will happen in the interim.

I think that looking forward it's easy to imagine more constructive help for Haiti.