We don't know why, but there are some gradients of infection.

Basic research is very useful, but it should be more geared toward application than it was before.

It's clear that prevention will never be sufficient. That's why we need a vaccine that will be safe.

My proposal now is to test a vaccine first on people who have been infected, and if you show some efficacy at this level, you might be able to go further to study uninfected people in a population with a high rate of infection.

AIDS win be our first priority, but in two years' time we don't know where AIDS research will stand, so we are also thinking of activity on other diseases.

I've participated in meetings where there were concerns by ethical experts. There is no clear solution.

Since most of the transmission is sexual transmission, you have a regional or local response to the virus.