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.

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

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

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.

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

One of the by-products of being a perfectionist and constantly trying to improve myself are sobering feelings of low-grade anxiety and a nagging sense of inadequacy This anxiety keeps me humble.

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