title: [Studies on the serological manifestation of the hepatitis B-virus-infections in the Republic of Liberia (author's transl)].
abstract: The prevalence of hepatitis B virus infections was examined in four groups from Liberia using radioimmunoassays for HBsAg, anti-HBs and anti-HBc. At the age of 15-19 years 90% have been infected, at the age of 40 years 100%. In a rubber plantation 30% had HBsAg, in the remaining 3 groups only 13% were HBsAg-positive. In the first group onchocerciasis was also a more frequent finding. However the parasitic infection was not the cause of the HBs-antigenemia. The HBsAg-concentration is mostly lower in the positive Liberians than in German HBsAg-carriers. Apparently the HBV caused frequently latent infections with low production of viral antigens in Liberia.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000914:Antibodies, Viral / Q000032:analysis*; D005260:Female; D006509:Hepatitis B / Q000150:complications / Q000453:epidemiology / Q000276:immunology*; D006510:Hepatitis B Antibodies / Q000032:analysis*; D006514:Hepatitis B Surface Antigens / Q000032:analysis*; D006801:Humans; D007988:Liberia; D008297:Male; D008875:Middle Aged; D009855:Onchocerciasis / Q000150:complications; D011863:Radioimmunoassay; D012737:Sex Factors; D012959:Socioeconomic Factors
chemical_list: D000914:Antibodies, Viral; D006510:Hepatitis B Antibodies; D006514:Hepatitis B Surface Antigens
vernacular_title: Studien zur serologischen Manifestation von Hepatitis B-Virus-Infektionen in der Republik Liberia.