55. Zhu FC, Hou LH, Li JX, et al. Safet y and immunogenicity of a novel recombinant adenovirus t ype-5 vector -based Ebola vaccine in healthy adults in China: prelimina ry report of a randomised, double- blind, placebo -controlled, phase 1 trial. Lancet 2015; 385(9984):2272-9.1.