痢疾感染后产生的型特异性免疫结果表明 ,O特异性多糖是一种保护性抗原。一项以色列新兵现场试验证实 ,宋内志贺菌结合菌苗可提供 74%的保护率。鉴于痢疾在幼儿中的发病率和死亡率较高 ,故作者在儿童中测定了宋内和福氏志贺菌结合菌苗的安全与免疫原性。　　分别将宋内和 2 a型 Type-specific immunization results following dysentery infection indicate that O-specific polysaccharide is a protective antigen. An on-site trial by Israeli recruits confirmed that Shigella sonnei combined with the vaccine provided 74% protection. In view of the high incidence and mortality of dysentery in young children, the authors measured the safety and immunogenicity of Shigella and Shigella flexneri in combination with the vaccine in children. Respectively, Song and 2 a type