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Seropositivity for anti-trypanosoma cruzi antibodies among blood donors of the "Hospital Universitário Regional do Norte do Paraná", Londrina, Brazil

Reiche, E M ; Inouye, M M ; Pontello, R ; Morimoto, H K ; Itow Jankevicius, S ; Matsuo, T ; Jankevicius, J V

Revista do Instituto de Medicina Tropical de São Paulo, 1996, Vol.38 (3), p.233-240 [Periódico revisado por pares]

Brazil: Instituto de Medicina Tropical

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  • Título:
    Seropositivity for anti-trypanosoma cruzi antibodies among blood donors of the "Hospital Universitário Regional do Norte do Paraná", Londrina, Brazil
  • Autor: Reiche, E M ; Inouye, M M ; Pontello, R ; Morimoto, H K ; Itow Jankevicius, S ; Matsuo, T ; Jankevicius, J V
  • Assuntos: Adolescent ; Adult ; Aged ; Animals ; Antibodies, Protozoan - blood ; Blood Donors ; Blood Transfusion ; Brazil ; Chagas Disease - blood ; Chagas Disease - epidemiology ; Chagas Disease - transmission ; Child ; Female ; Hospitals, University ; Humans ; Male ; Middle Aged ; Seroepidemiologic Studies ; TROPICAL MEDICINE ; Trypanosoma cruzi - immunology
  • É parte de: Revista do Instituto de Medicina Tropical de São Paulo, 1996, Vol.38 (3), p.233-240
  • Notas: ObjectType-Article-2
    SourceType-Scholarly Journals-1
    ObjectType-Feature-3
    content type line 23
    ObjectType-Review-1
  • Descrição: The most frequent form of acquisition of Chagas' disease in endemic areas was the transmission through the feces of contaminated triatominae. However, special attention should be paid in urban areas to transmission by blood transfusion, justifying the compulsory screening of blood donors. Early investigations at blood banks in the town of Londrina, Brazil, demonstrated that the seroprevalence of anti-Trypanosoma cruzi antibodies among blood donors was approximately 7.0% in the fifties. Further studies demonstrated practically the same seroprevalence until the eighties. In an attempt to obtain data about the real dimension of the seropositivity for anti-Trypanosoma cruzi antibodies in the region, the authors carried out a large-scale study on 45,774 serum samples from blood donors of the Hemocentro of Hospital Univesitário Regional do Norte do Paraná (HURNP), Universidade Estadual de Londrina. The immunological tests were done at the Division of Clinical Immunology of HURNP from May 1990 to December 1994. The serum samples were studied by the indirect hemagglutination assay (IHA, using kits commercially obtained from EBRAM) and by indirect immunofluorescence (IFI, using kits from LIO SERUM) with anti-human IgG conjugate (LABORCLIN). The results demonstrated that 643 serum samples were positive in both assay corresponding to a seroprevalence of 1.4%, i.e., a significant decrease in anti-Trypanosoma cruzi antibodies in the region in comparison with the previously mentioned rates. Data correlating sex and age of seropositive blood donors are presented, as well as the possible factors that may have contributed to the results observed.
  • Editor: Brazil: Instituto de Medicina Tropical
  • Idioma: Inglês;Português
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