The phase II studies in the target age groups in Africa have shown anywhere from 40-60% protection against malaria in the follow-up period for the trials.
对非洲目标年龄组的第二期研究结果显示，在随后阶段，疟疾保护率位于40%至60%之间。
2
Theactive study phase lasted 36 weeks, followed by one year ofpassive follow-up.
积极研究阶段持续了36周，以后是为期1年的跟踪研究。
3
In the design phase of a project, the type selection and collocation of embedded instruments is an important job, which influences to a large extent the follow-up work.