glaxosmithkline vaccine trials

Has anybody been following the Glaxo anti malaria vaccine trials?
I heard an interview over the week-end on ABC Newsradio, and heard that there have been trials underway in quite a few African countries , maybe seven countries, for over a year now and the results are very promising.I think I heard that the vaccine has so far been effective for approx 15 to 30% of those vaccinated, but they are obviously working on getting that rate a lot higher.
I suppose that raises the question,....what affect would a successful anti malaria vaccine have on the demand for a malaria treatment drug?
If you google "glaxo anti malaria vaccine trials", there seems to be quite a bit of info, but like EMS release of up to date trial results is slow.