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Published on: November 3, 2009
Congenital toxoplasmosis and prenatal care state programs
Mariza M Avelino1, Waldemar N Amaral, Isolina M X Rodrigues
1Pediatrics and Childcare Department of the Medical School of Federal University of Goiás (UFG), Goiânia, Brazil. mariza.avelino@gmail.com.
Maternal spiramycin treatment significantly reduces congenital toxoplasmosis transmission. However, inadequate treatment and lack of seroconversion monitoring in pregnant women increase the risk of severe fetal infections, particularly neuro-optical forms.
Area of Science:
- Medical Science
- Infectious Diseases
- Maternal-Fetal Medicine
Background:
- High incidence of toxoplasmosis in pregnant women necessitates control programs.
- Evaluating spiramycin's efficacy and the impact of monitoring on congenital toxoplasmosis prognosis is crucial.
Purpose of the Study:
- To assess the effectiveness of maternal spiramycin treatment in reducing vertical transmission of toxoplasmosis.
- To determine if a lack of toxoplasmosis seroconversion monitoring affects congenital infection outcomes.
Main Methods:
- Prospective cohort study of 246 at-risk newborns in Goiânia, Brazil (2003-2011).
- Analysis of maternal spiramycin treatment efficacy and correlation with infant outcomes.
Main Results:
- 40.7% of neonates were severely infected; 5.5% had vertical transmission with reactivation.
- Maternal spiramycin reduced transmission, while inadequate treatment increased severe (neural-optical) infection risk.
- Fetal IgM and neonatal IgA indicated worse prognosis, linked to ocular and neuro-ophthalmologic complications.
Conclusions:
- Maternal spiramycin treatment lowers fetal toxoplasmosis transmission risk.
- Lack of proper treatment and seroconversion surveillance increases severe congenital infection, especially neuro-optical forms.
- Enhanced primary prevention and secondary prophylaxis (seroconversion surveillance) are vital for pregnant women.
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