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

Our goal is not to completely eradicate the infection - that would be very difficult - but to produce a vaccine that will prevent not infection but disease. I think this is more possible.

The center will be fully operational in two years' time, but probably in the middle of the year we will have a temporary laboratory of 4,000 square feet.

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

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

Another interesting field, which is my own, is cofactors, not only to the disease but also to transmission. I am still puzzled by the fact that you get more sexual transmission in some ethnic populations. One way to answer this is to look for genetic factors.

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