Activism has been very productive in our society.

Previous efforts to eradicate malaria failed for several reasons, including political instability and technical challenges in delivering resources, especially in certain countries in Africa.

A pandemic influenza would mean widespread infection essentially throughout every region of the world.

You can have an epidemic in a state. You can have it in a region. You can have it in a country where the critical level of disease passes a certain threshold and we call that an epidemic threshold.

Investigating rare diseases gives researchers more clues about how the healthy immune system functions.

The worst potential bio-terrorist is nature itself.

I run a modest-sized laboratory thats looking specifically at what we call the pathogenic mechanisms of HIV disease, or AIDS.