Salk vaccine is a"killed" vaccine. 沙克疫苗是一种不会传染的疫苗。
The coalition urged AIDS scientists not to begin trials of other new vaccines until more definitive conclusions could be reached from further analysis of the Merck vaccine. 该联盟敦促艾滋病科学家没有开始审判的其他新的疫苗之前，更确切的结论，可以达到从进一步分析默克疫苗。
