Leaked documents reveal behind-the-scenes Ebola vaccine issues

ScienceInsider obtained materials that vaccinemakers, governments, and WHO provided to the 100 or so participants at a meeting on “access and financing” of Ebola vaccines. The documents put hard numbers on what until now have been somewhat fuzzy academic discussions. And they make clear to the attendees—who include representatives from governments, industry, philanthropies, and nongovernmental organizations—that although testing and production are moving forward at record speed, knotty issues remain.

At the meeting, GlaxoSmithKline (GSK) of Rixensart, Belgium, which has the vaccine furthest in development, spelled out how it might scale up production in parallel with the safety and efficacy trials now under way so that the product could be ready for wider distribution by April if warranted. The company expects to have preliminary data in November from phase I studies that analyze safety and immune response in small numbers of people not at risk of contracting Ebola. If those data are positive, efficacy trials could start as early as January in Guinea, Sierra Leone, and Liberia, the three West African countries hard hit by the epidemic.

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