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在若干人群中,乙型肝炎表面抗原(HBsAg)阳性的人看来有90%以上是健康的长期带病毒者。他们在保持和传播乙型肝炎病毒方面的作用尚不十分了解。其中有些带病毒者通过输血和人员接触并无传染性;健康的 HBsAg 阳性母亲通常也不能将肝炎传播
In several populations, it appears that more than 90% of people who are positive for hepatitis B surface antigen (HBsAg) are healthy, long-term carriers of the virus. Their role in maintaining and transmitting the hepatitis B virus is not well understood. Some of these people who have the virus are not contagious through blood transfusions and personal contact; healthy HBsAg-positive mothers usually do not transmit hepatitis