title: Hepatitis B surface antigenaemia in Ilorin, Kwara State, Nigeria.
abstract: OBJECTIVE
  To determine the prevalence of HBsAg among blood donors in Ilorin, in the middle belt area of Nigeria.
  
  
  METHODS
  Cross sectional.
  
  
  METHODS
  University of Ilorin Teaching Hospital.
  
  
  METHODS
  100 patients from antenatal clinic, 100 patients from STD clinic and 295 healthy blood donors from UITH.
  
  
  METHODS
  Prevalence of HBsAg.
  
  
  RESULTS
  One hundred and sixteen (23.4pc) of the subjects were positive for HBsAg. These included 16pc of ANC patients, 36pc of STD patients and 21.7pc of blood donors. The positivity rate among STD patients was significantly higher than among ANC patients (p < 0.01) and blood donors (p < 0.01). The positivity rate among patients above 34 years of age was higher than in those of 15 to 34 years.
  
  
  CONCLUSIONS
  The above positivity rates are higher than those previously reported in Nigeria and may indicate increasing prevalence. The highest rate found among STD clinic patients may have identified them as a reservoir group to which control programmes need to be targeted.
authors.affiliation: Department of Medical Microbiology and Parasitology, University of Ilorin, Nigeria.
authors.forename: A S
authors.initials: AS
authors.lastname: Bada
authors.forename: P O
authors.initials: PO
authors.lastname: Olatunji
authors.forename: J O
authors.initials: JO
authors.lastname: Adewuyi
authors.forename: J O
authors.initials: JO
authors.lastname: Iseniyi
authors.forename: B A
authors.initials: BA
authors.lastname: Onile
mesh_terms: D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D001782:Blood Donors; D003430:Cross-Sectional Studies; D005260:Female; D006509:Hepatitis B / Q000453:epidemiology / Q000276:immunology*; D006514:Hepatitis B Surface Antigens / Q000097:blood*; D006801:Humans; D009549:Nigeria / Q000453:epidemiology; D011247:Pregnancy; D011251:Pregnancy Complications, Infectious / Q000453:epidemiology / Q000276:immunology*; D015995:Prevalence; D016036:Seroepidemiologic Studies; D012749:Sexually Transmitted Diseases / Q000453:epidemiology / Q000276:immunology*; D014504:Urban Health
chemical_list: D006514:Hepatitis B Surface Antigens