title: Seroprevalence of hepatitis B and C virus infections among Lao blood donors.
abstract: There have been no previous reports of the prevalence of hepatatis B virus (HBV) and hepatitis C virus (HCV) infections in Lao PDR. From 2003 to 2005, 13,897 first-time blood donors were screened for the presence of hepatitis B surface antigen (HBsAg) and hepatitis C virus antibody (anti-HCV). The seroprevalence of HBsAg positive blood donors was 8.7%. The prevalence among males (9.7%) was higher than in females (6.2%). The prevalence of anti-HCV positive blood donors was 1.1%, with no significant differences between males (1.1%) and females (1.0%). Annual positive rates for HBsAg and anti-HCV during the years 2003 to 2005 did not differ significantly. Lao PDR has a high endemicity of HBV carriers (8.7%). Dual infection with HBV and HCV was 0.12%. For preventing HBV infection, the country introduced DPT-Hepatitis B vaccines into the National Immunization Program in 2001. The large reservoir of HBV and HCV infections will cause an enormous burden of patients with cirrhosis and hepatocellular carcinoma in the future.
authors: Department of Pathology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand. pjutavij@mail.med.cmu.ac.th
authors: Prapan
authors: P
authors: Jutavijittum
authors: Amnat
authors: A
authors: Yousukh
authors: Bounthome
authors: B
authors: Samountry
authors: Khamtim
authors: K
authors: Samountry
authors: Angkham
authors: A
authors: Ounavong
authors: Te
authors: T
authors: Thammavong
authors: Jerapha
authors: J
authors: Keokhamphue
authors: Kan
authors: K
authors: Toriyama
mesh_terms: D000293:Adolescent; D000328:Adult; D001782:Blood Donors / Q000706:statistics & numerical data*; D017848:Blood-Borne Pathogens / Q000302:isolation & purification; D005260:Female; D006509:Hepatitis B / Q000097:blood / Q000453:epidemiology* / Q000276:immunology; D006510:Hepatitis B Antibodies / Q000097:blood*; D006514:Hepatitis B Surface Antigens / Q000097:blood; D006526:Hepatitis C / Q000097:blood / Q000453:epidemiology* / Q000276:immunology; D018937:Hepatitis C Antibodies / Q000097:blood*; D006801:Humans; D007812:Laos / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D011159:Population Surveillance; D016036:Seroepidemiologic Studies
chemical_list: D006510:Hepatitis B Antibodies; D006514:Hepatitis B Surface Antigens; D018937:Hepatitis C Antibodies