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.

You dont have to vaccinate every man, woman and child in the country if you have a couple of cases of smallpox cropping up.

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.

We can sharply deflect the curve of HIV incidence.

When I was a child, there were not that many vaccines. I was vaccinated for polio. I actually got measles as a child. I got pertussis, whooping cough. I remember that very well.

An AIDS-free generation would mean that virtually no child is born with HIV; that, as those children grow up, their risk of becoming infected is far lower than it is today; and that those who become infected can access treatment to help prevent them from developing AIDS and from passing the virus on to others.

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.