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      Marcadores sorológicos das hepatites B e C em doadores de sangue do Hemocentro de Ribeirão Preto, SP Translated title: Hepatitis B and C serologic markers in blood donors of the Ribeirão Preto Blood Center

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          Abstract

          Este estudo envolveu 25.891 doadores de sangue que compareceram pela primeira vez ao Hemocentro de Ribeirão Preto, entre 23/06/1996 e 22/06/2001. Seu objetivo foi estudar a positividade de marcadores sorológicos das hepatites B e C em testes de triagem e estimar a prevalência de infecção atual ou pregressa pelos vírus de ambas as hepatites, através da análise dos resultados de testes confirmatórios. Estudaram-se dados do Hemocentro e do Hospital das Clínicas da Faculdade de Medicina, coletando-se informações referentes ao doador e aos resultados dos testes sorológicos. A população foi composta majoritariamente por homens (83,6%) de 26 a 45 (64%) anos de idade. Os valores de positividade nos testes da triagem foram 0,6% (IC95%: 0,54 0,72) para o HBsAg e 1,2% (IC95%: 1,02 1,28), para o anti-HCV. Os valores da prevalência, nos testes confirmatórios, foram 0,2% (IC95%: 0,16 0,28), para a hepatite B, e 0,3% (IC95%: 0,24 0,38) para a hepatite C.

          Translated abstract

          The investigation involved 25,891 blood donors who attended for the first time the Blood Center of Ribeirão Preto, Brazil, between Jun 23, 1996 and Jun 22, 2001. The objective was to study the proportion of positive serological markers for hepatitis B and C at the initial screening tests and to estimate the prevalence of such infections through the analysis of confirmatory tests, carried out at the University Hospital as a part of the patients evaluation. Data from the donors and laboratory results were obtained from the records of both the Blood Bank and the Hospital. The population of donors was mainly composed by males (83.6%) and by individuals between 26 and 45 (64%) years of age. The proportions of positive results in screening tests were 0.6% (CI95%: 0.54 0.72) for HBsAg and 1.2% (CI95%: 1.02 1.28) for anti-HCV. Confirmatory testes showed values of prevalence of 0.2% (CI95%: 0.16 0.28) for hepatitis B and 0.3% (IC95%: 0.24 0.38) for hepatitis C.

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          Elcontrol de las enfermidades transmissibles en el hombre

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            Hepatitis B and hepatitis delta virus infection in South America.

            About 100,000 cases of acute hepatitis B virus (HBV) infection occur annually in South America. The overall prevalence of HBV infection in low risk populations ranges from 6.7% to 41%, while hepatitis B surface antigen (HBsAg) rates range from 0.4% to 13%. In high endemicity aboriginal or rural populations, perinatal transmission may play a major part in the spread of HBV. In urban populations, however, horizontal transmission, probably by sexual contact, is the predominant mode of spread, with higher rates of HBV positivity in lower socioeconomic groups. High risk populations such as health care workers and haemodialysis patients show higher rates of HBV infection than comparable populations elsewhere. The risk of posttransfusion hepatitis B remains high in some areas. Concomitant HBV infection may accelerate the chronic liver disease seen in decompensated hepatosplenic schistosomiasis. In the north, the prevalence of hepatitis delta virus (HDV) infection ranks among the highest in the world. In the south, the problem appears negligible although it is increasing within high risk urban communities. HDV superinfection has been the cause of large outbreaks of fulminant hepatitis. The cost of comprehensive or mass vaccination programmes remains unaffordable for most South American countries. Less expensive alternatives such as low dose intradermal schedules of immunisation have been used with success in selected adult subjects.
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              Stata Statistical Software: Release 9.0 College Station

              (2005)
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Journal
                rsbmt
                Revista da Sociedade Brasileira de Medicina Tropical
                Rev. Soc. Bras. Med. Trop.
                Sociedade Brasileira de Medicina Tropical - SBMT (Uberaba )
                1678-9849
                December 2005
                : 38
                : 6
                : 488-492
                Affiliations
                [1 ] Hemocentro de Ribeirão Preto
                [2 ] Universidade de São Paulo Brazil
                [3 ] Universidade de São Paulo Brazil
                Article
                S0037-86822005000600008
                10.1590/S0037-86822005000600008
                0e8d949f-717c-43a2-a01e-8f162ca57307

                http://creativecommons.org/licenses/by/4.0/

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                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=0037-8682&lng=en
                Categories
                TROPICAL MEDICINE

                Infectious disease & Microbiology
                Serologic markers,Blood donors,Hepatitis,Hepatitis B,Hepatitis C,Prevalence,Doadores de sangue,Hepatites,Hepatite B,Hepatite C,Marcadores sorológicos,Prevalência

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