Determinants of HIV-1 mother-to-child transmission in Southern Brazil

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Determinants of HIV-1 mother-to-child transmission in Southern Brazil.

Different human immunodeficiency virus type 1 (HIV-1) subtypes may have distinct biological, immunological and pathogenic properties. Efficiency of mother-to-child transmission (MTCT) may be among those properties, but few and controversial results have been described so far. In this study, 102 children born from HIV-1-infected mothers between 1998 and 2004 in the city of Rio Grande, Brazil wer...

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In Iran 8% of HIV- infected cases are women. Since most of them are young and in childbearing ages, in case of becoming pregnant and not receiving preventive measures, they can infect their child. Without Preventive measures transmission rate is 15 to 45 percent. Several factors such as sever stage of HIV and AIDS ,CD4 low count, high viral loud, acute retroviral phase, STDs, vaginal delivery, ...

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After reviewing the evidence on the relation of vertical transmission of HIV to stage of infection in the mother, I developed a stochastic model of transmission in which the probability of transmission per week is proportional to the virus load in the mother. The virus load in different stages of the infection is measured by viral RNA levels or tissue culture infectious virus levels in plasma. ...

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The genetic heterogeneity of HIV-1 poses a major obstacle to vaccine development. Although most horizontally acquired HIV-1 infections are initiated by a single homogeneous virus, marked genetic diversification and evolution occur following transmission. The relative contribution of the antiviral immune response to intrahost viral evolution remains controversial, in part because the sequence of...

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ژورنال

عنوان ژورنال: Anais da Academia Brasileira de Ciências

سال: 2006

ISSN: 0001-3765

DOI: 10.1590/s0001-37652006000100011