Okuda Masumi, Tachikawa Tomohiro, Maekawa Kohei, Fukuda Yoshihiro
Department of Pediatrics, Sasayama Medical Center, Hyogo College of Medicine.
Nihon Rinsho. 2013 Aug;71(8):1339-45.
The incidence of Helicobacter pylori (H. pylori) infection is rapidly decreased in Japan. H. pylori infection is mainly acquired in the first 2 years life and the risk of infection declines rapidly after 5 years of age. Person-to-person transmission in the family appears to be the predominant and in the population with low prevalence, several studies showed the infected mother is likely to be the main source of the infection. H. pylori can be detected from vomitus, saliva and cathartic stools and the possibility of source of infection. Waterborne infection is unlikely in the developed countries.
在日本，幽门螺杆菌（H. pylori）感染的发生率正在迅速下降。幽门螺杆菌感染主要在生命的头两年获得，5岁以后感染风险迅速下降。家庭内的人际传播似乎是主要途径，在低流行率人群中，多项研究表明受感染的母亲可能是主要感染源。可从呕吐物、唾液和腹泻粪便中检测到幽门螺杆菌以及存在感染源的可能性。在发达国家，水源性感染不太可能发生。
