title: [A follow-up study of HBV infection in a village of Beijing rural area].
abstract: From 1982 to 1988, a follow-up study on HBV infection was carried out in a village of Beijing rural area. The negative conversion rates of HBsAg; anti-HBs; anti-HBc were 2.9%; 2.1%; 1.2% per year respectively. It was seemed that the negative conversion of HBsAg; anti-HBs increased with age. The present of anti-HBc was favorable to keeping anti-HBs. For all of the three markers, the higher the titre, the lower the negative conversion rates. It was concluded that the essential factor influencing the natural outcome of HBV markers was the level of HBV duplication. Those who were susceptible to HBV in 1982 were infected at the rate of 20.3% in this period. Analysis indicated that source of the Infection perhaps seems not to be in their family.
authors.affiliation: Institute of Microbiology and Epidemiology, Academy of Military Medical Science, Beijing.
authors.forename: J
authors.initials: J
authors.lastname: Li
mesh_terms: D015415:Biomarkers / Q000097:blood; D002353:Carrier State / Q000453:epidemiology*; D002681:China / Q000453:epidemiology; D005500:Follow-Up Studies; D006509:Hepatitis B / Q000453:epidemiology*; D006510:Hepatitis B Antibodies / Q000097:blood; D006514:Hepatitis B Surface Antigens / Q000097:blood; D006515:Hepatitis B virus / Q000276:immunology; D006801:Humans; D015994:Incidence; D012424:Rural Population
chemical_list: D015415:Biomarkers; D006510:Hepatitis B Antibodies; D006514:Hepatitis B Surface Antigens