There has been treatment for hepatitis C, but the treatment has not been overwhelmingly effective, number 1. And number 2, it has had considerable toxicity.

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

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

Staph lives on skin. Thats the reason why many infections start as a boil.

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

There has been treatment for hepatitis C, but the treatment has not been overwhelmingly effective, number 1. And number 2, it has had considerable toxicity.

The nature of a protective immune response to HIV is still unclear. Because in a very, very unique manner, unlike virtually any other microbe with which we're familiar, the HIV virus has evolved in a way that the immune system finds it very difficult, if not impossible, to deal with the virus.