Sure. As you know, finding a vaccine against malaria has been one of the big public health goals for decades. There has never been a successful and effective vaccine against malaria, but trial results came out that showed a 50% protection. That's good. That's not ideal, because for a vaccine you normally want a 90% effectiveness, but for the first time, it shows there's promise.
If they can improve that further, in four or five years we might have a really effective vaccine on the market. Obviously the Global Fund would be happy to support it and make it available to the countries, because that could be the final tool that we need, in combination with treatment and prevention activities, that would really enable us to eliminate malaria on a sustainable basis. That would a huge success--an historic success, really.