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为探讨乙肝病毒粪－口途径传播的可能，用ＥＬＩＳＡ法检测１６０例胃病患者胃液ＨＢｓＡｇ和抗ＨＢｃ，发现各型患者之胃液均可检出－－“腔释放”。因ＨＢｓＡｇ为乙肝病毒囊膜，不受胃液和肠液破坏，经口而入的ＨＢＶ既可使人受染，又可随粪－口途径传染他人。胃癌（Ｃａ）、慢性浅表性胃炎（ＣＳＧ）合并十二肠肠球部溃疡（ＤＵＡ）和慢性萎缩性胃炎（ＣＡＧ）、ＣＳＧ／ＣＡＧ、ＣＳＧ／ＤＵＡ和ＣＳＧ之ＨＢｓＡｇ检出率分别为３６．７％、１６．７％、１４．７％、８．７％和６．３％；抗－ＨＢｃ检出率分别为８３．７％、３３．３％、３２．３％、４７．８％和５４．２％。胃癌与其他各组比较，除ＣＳＧ＋ＤＵＡ／ＣＡＧ外，均有极其显著意义（Ｐ＜０．０１）。这对胃癌鉴别诊断有助。１６０例胃液未检出１例抗－ＨＣＶ阳性。因胃镜检查为胃病诊断常规，不抽取血液即可诊断胃病患者之ＨＢＶ感染
To explore the possibility of hepatitis B virus fecal-oral route of transmission, ELISA was used to detect the gastric fluid HBsAg and anti-HBc in 160 gastric patients. It was found that gastric juice of all kinds of patients could be detected - “cavity release”. Because HBsAg is hepatitis B virus capsule, not by the gastric juice and intestinal fluid damage, oral HBV can make people infected, but also with the fecal - oral transmission of others. The detection rates of HBsAg in gastric cancer (Ca), chronic superficial gastritis (CSG) with duodenal ulcer (DUA) and chronic atrophic gastritis (CAG), CSG / CAG, CSG / DUA and CSG were 36 .7%, 16.7%, 14.7%, 8.7% and 6.3%, respectively. The detection rates of anti-HBc were 83.7%, 33.3%, 32.3%, 47.8 % And 54.2%. Gastric cancer was significantly different from other groups except CSG + DUA / CAG (P <0.01). This differential diagnosis of gastric cancer help. One case of 160 cases of gastric juice was not detected anti-HCV positive. Due to gastroscopy for the diagnosis of stomach trouble, you can not diagnose the stomach of patients with HBV infection