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Sökning: L773:0003 4819 > Widell Anders

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1.
  • Widell, Anders, et al. (författare)
  • Epidemiologic and molecular investigation of outbreaks of hepatitis C virus infection on a pediatric oncology service
  • 1999
  • Ingår i: Annals of Internal Medicine. - : American College of Physicians. - 0003-4819. ; 130:2, s. 130-134
  • Tidskriftsartikel (refereegranskat)abstract
    • BACKGROUND: Despite screening of blood donors, hepatitis C virus (HCV) infection can occur in patients who receive multiple transfusions. OBJECTIVE: To clarify mechanisms of nosocomial transmission of HCV. DESIGN: Epidemiologic and molecular analyses of hepatitis C outbreaks. SETTING: Pediatric oncology ward. PATIENTS: Children with cancer. MEASUREMENTS: Epidemiologic analysis, HCV RNA detection, genotyping, and hypervariable region 1 (HVR1) sequencing. RESULTS: Ten cases of infection with acute HCV genotype 3a occurred between 1990 and 1993. Sequencing of HVR1 revealed three related strains. Despite an overhaul of hygiene procedures, a patient infected with genotype 1b generated nine subsequent infected patients in 1994. Several patients had high virus titers and strongly delayed anti-HCV antibody responses. All had permanent intravenous catheters. Multidose vials used for flushing or treatment had probably been contaminated during periods of overlapping treatment. CONCLUSIONS: Contamination of multidose vials was the most likely mode of HCV transmission; therefore, use of such vials should be restricted. Rigorous adherence to hygiene routines remains essential to preventing transmission of bloodborne infections.
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2.
  • Wejstål, R, et al. (författare)
  • Mother-to-infant transmission of hepatitis C virus
  • 1992
  • Ingår i: Annals of Internal Medicine. - 0003-4819. ; 117:11, s. 887-890
  • Tidskriftsartikel (refereegranskat)abstract
    • OBJECTIVE: To describe the rate of perinatal transmission of hepatitis C virus (HCV). DESIGN: Follow-up study of newborn children of mothers with chronic HCV infection. SETTING: A university hospital in Sweden. PARTICIPANTS: Fourteen women with chronic HCV infection and their 21 newly born children. MAIN OUTCOME MEASURES: Detection of HCV RNA in serum by the polymerase chain reaction and detection of anti-HCV antibody by second generation assays. RESULTS: All mothers were found to be positive for anti-HCV antibody both by second-generation enzyme-linked immunosorbent assay (ELISA) and by second-generation recombinant immunoblot assay (RIBA-2); all also had detectable serum HCV RNA. Two children had long-lasting alanine aminotransferase (ALT) elevations, and one of them became HCV RNA positive. None of the other children developed biochemical hepatitis. However, two additional children had temporary viremia. Only the child with biochemical and biopsy-proven hepatitis and detectable HCV RNA in multiple blood samples actively produced anti-HCV antibody. CONCLUSIONS: Mother-to-infant transmission of HCV infection from chronically infected women without human immunodeficiency virus (HIV) infection seems to be uncommon.
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