疫苗是控制传染病的一种经济有效的方法 ,在哥伦比亚、厄瓜多尔和坦桑尼亚进行的现场研究已经证实 ,子孢子和血液期合成肽(SPf6 6 )联合能降低疟疾发病率。作者报告了三组分血液期疟疾疫苗对巴布亚新几内亚高流行区成人志愿者的安全性与免疫原性 期试验结果。　　疫苗含 3种以 Vaccines are a cost-effective method of controlling infectious diseases. Field studies in Colombia, Ecuador and Tanzania have demonstrated that the combination of sporozoites and blood-phase synthetic peptides (SPf6 6) can reduce the incidence of malaria. The authors report on the safety and immunogenicity of three-component blood-phase malaria vaccine in adult volunteers in areas of high endemicity in Papua New Guinea. The vaccine contains 3 kinds