High mortality due to congenital malformations in children aged < 1 year in French Guiana

Abstract : BACKGROUND: In French Guiana, pregnant women may be exposed to infectious, environmental, and social risks leading to congenital malformation. The objective of the study was to study mortality rates from congenital malformations among infants < 1 year and to compare them with those in mainland France. METHODS: We used the CEPI DC (INSERM) database, which compiles annual data from death certificates in all French territories using the International Classification of Diseases. Annual deaths for French Guiana and mainland France between 2005 and 2015 were compiled. The age category studied was children less than 1 year and deaths from congenital malformations, deformations and chromosomal abnormalities were compiled. Crude risk ratios and 95% confidence intervals were calculated to quantify the excess risk of disease in French Guiana. RESULTS: In French Guiana between 2005 and 2015 there were 666 deaths of children aged < 1 year, among which, 132 (19.8%) were due to congenital malformations and chromosomal anomalies. Overall the risk ratio of death from congenital malformations and chromosomal anomalies between French Guiana and mainland France was 2.7 (1.5-4.7), P < 0.001 for neurological congenital malformations it was 4.8 (1.2-19.7), P = 0.01 and for congenital malformations of the circulatory system it was 3.3 (1.5-6.9), P = 0.001. CONCLUSIONS: The incidence of death from congenital malformations or chromosomal anomalies in French Guiana was significantly higher than in mainland France. Explanations for this may be infections, genetic causes, nutritional causes, and toxic causes that are prevalent. There is a need to identify factors that predispose children born in French Guiana to having a higher risk of congenital malformations and chromosomal anomalies.
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Mathieu Nacher, Véronique Lambert, Anne Favre, Gabriel Carles, Narcisse Elenga. High mortality due to congenital malformations in children aged < 1 year in French Guiana. BMC Pediatrics, BioMed Central, 2018, 18 (1), pp.393. ⟨10.1186/s12887-018-1372-8⟩. ⟨inserm-02057630⟩

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