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Journal Article
Research Support, Non-U.S. Gov't
Treatment of Infected Women of Childbearing Age Prevents Congenital Trypanosoma cruzi Infection by Eliminating the Parasitemia Detected by PCR.
Journal of Infectious Diseases 2017 May 2
Background: We evaluated the effectiveness of treating women of childbearing age with benznidazole to prevent congenital Chagas disease (CCD), as well as the usefulness of polymerase chain reaction (PCR) as a tool to predict the risk of transmission.
Methods: Prospective study involving 144 T. cruzi seropositive pregnant women. The parasitological status was studied by PCR in 159 pregnancies, 38 of which involved a cohort of previously treated mothers. One hundred sixty children were examined by PCR and serologically studied at 0-6, 9 and 12 months and annually after treatment.
Results: PCR was seen to be useful for predicting the risk of congenital transmission: 18.8% of mothers with a positive PCR result transmitted the infection (16 infected children out of 85 pregnancies). No infected infants were detected among 74 pregnancies when PCR was negative. Of the treated mothers, 92.1% had negative PCR results, compared with 32.2% of untreated mothers. No infected infants were detected from previously treated mothers, compared with 13.2% among untreated mothers (P = .019; χ2). All infants treated before the first year of life were cured.
Conclusions: Treating infected women of childbearing age prevents congenital Chagas disease. Polymerase chain reaction screening of T. cruzi-infected pregnant women is a useful tool for predicting the risk of congenital transmission.
Methods: Prospective study involving 144 T. cruzi seropositive pregnant women. The parasitological status was studied by PCR in 159 pregnancies, 38 of which involved a cohort of previously treated mothers. One hundred sixty children were examined by PCR and serologically studied at 0-6, 9 and 12 months and annually after treatment.
Results: PCR was seen to be useful for predicting the risk of congenital transmission: 18.8% of mothers with a positive PCR result transmitted the infection (16 infected children out of 85 pregnancies). No infected infants were detected among 74 pregnancies when PCR was negative. Of the treated mothers, 92.1% had negative PCR results, compared with 32.2% of untreated mothers. No infected infants were detected from previously treated mothers, compared with 13.2% among untreated mothers (P = .019; χ2). All infants treated before the first year of life were cured.
Conclusions: Treating infected women of childbearing age prevents congenital Chagas disease. Polymerase chain reaction screening of T. cruzi-infected pregnant women is a useful tool for predicting the risk of congenital transmission.
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