Results from an interim analysis of the Guinea Phase III efficacy vaccine trial show that VSV-EBOV (manufactured by Merck, Sharp & Dohme) is highly effective against Ebola. The independent body of international experts - the Data and Safety Monitoring Board â that conducted the review, advised that the trial should continue. Preliminary results from analyses of these interim data are published today in The Lancet. This slide show provides details about the trial and presents a pictoral gallery.Â