Some of the most vulnerable people to getting the SARS virus are health care providers. The general public, walking in the street, there is really not that much risk at all. It's a very, very low risk - a very, very low risk.
I think it would be over-exaggeration to think that there are millions of viruses ready to jump on us and bring us back to the 14th century. That would be looking over a ledge that isn't there.
Testing two vaccines against different H1N1s at the same time has never been done.
There are a number of candidate vaccines that are in development for HIV/AIDS.
The Europeans have lots of data on the use of adjuvanted flu vaccine in the elderly, but I don't think anybody has really good data on adjuvants in children.
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.
