幽门螺杆菌(H e licobacter py lori,H py lori)感染和消化性溃疡、胃炎等消化系疾病密切相关[1,2],H py lori感染率在发展中国家的感染率要高于发达国家,在同一国家内的不同地区也存在显著差别。有相关文献报道认为H py lori的感染率随着年龄的增长有上升趋势而且还存在季节性 H. pylori infection is closely related to digestive diseases such as peptic ulcer and gastritis [1,2]. The prevalence of H py lori infection in developing countries is higher than that in developed countries There are also significant differences in different regions within the same country. It has been reported in relevant literature that the infection rate of H py lori is increasing with age and there is also a seasonal