These studies point the way to detailed understanding and provide some key information for vaccine development, although much remains to be learned to enable truly rational vaccine design.

The current vaccine research feel a little bit, "Fang Jian chaos", but always grasp the crucial point, did not induce an effective anti-HIV responses, which is currently the biggest confusion.

What we did for the pneumococcal vaccine was we said we will pay one point five billion dollars if you develop the right vaccines, and the right volumes that we need and at the right price.