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.

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

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

Certainly the support for research in HIV/AIDS was good in the Clinton administration, good in the Bush administrations. It just was.

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 bodys immune system is like any other system of the body. Each of them have their vital function for the human host.

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