The world is a place that is so interconnected that what happens in another part of the world will impact us.

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

What has happened over the years is that scientists have now developed AIDS therapeutic capabilities, as well as prevention, and we've linked prevention and treatment in a way that if you fast-forward 30 years form '88 to now, we can say without hyperbole that we have the tools, if implemented the way they could be implemented, to theoretically, essentially end the epidemic as we know it now.

When you put someone on therapy, you lower the level of virus such that it makes it very difficult for them to infect others.

Testing two vaccines against different H1N1s at the same time has never been done.

I think, collectively, we should be paying more attention to what is going on around us in the world among people who dont have the advantages that we have.

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