使用９６型伤寒Ｖｉ－Ⅱ噬菌体对我国１４省、市多年来收集的３２２８株伤寒沙门氏菌进行了分型研究，分得３６个型，分型率为８７．１１％。其中以Ｍ１为主要流行型，占３８．８８％，曾分别在贵州、江苏、河南、湖北和浙江等地引起水型暴发流行；Ａ、Ｂ１和Ｄ２型分布较广；并发现了Ｍ３、４２、４９、５０、５１等目前国内未见报道的新型别。该研究结果对追踪传染源、查找传播因素和制定防治措施等提供了科学依据 3228 typhoid Salmonella typhi collected in 14 provinces and cities of our country over the years were classified using 36 type 96 bacteriophages and the typing rate was 87.11%. Among them, M1 was the main epidemic type, accounting for 38.88%, causing water outbreaks in Guizhou, Jiangsu, Henan, Hubei and Zhejiang respectively; A, B1 and D2 were widely distributed; and M3, 42 , 49,50,51 such as the current domestic no new type reported. The results of this study provide a scientific basis for tracking the source of infection, finding the factors of transmission and making prevention and control measures