The experimental accine, made by Sanofi-Pasteur, protected only 45 percent of the 91 people on whom it was tested in a hasty clinical trial.

• 该疫苗由赛诺菲巴斯德公司生产，在一个仓促的临床试验中，该疫苗只能保护45%25的受试者（共91人）。