But if you're asking my opinion, I would argue that a social justice approach should be central to medicine and utilized to be central to public health. This could be very simple: the well should take care of the sick.

So I can't show you how, exactly, health care is a basic human right. But what I can argue is that no one should have to die of a disease that is treatable.

I've been asked a lot for my view on American health care. Well, 'it would be a good idea,' to quote Gandhi.

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.

Anywhere you have extreme poverty and no national health insurance, no promise of health care regardless of social standing, that's where you see the sharp limitations of market-based health care.

If any country was a mine-shaft canary for the reintroduction of cholera, it was Haiti - and we knew it. And in retrospect, more should have been done to prepare for cholera... which can spread like wildfire in Haiti... This was a big rebuke to all of us working in public health and health care in Haiti.