Maternal Infections during Pregnancy and Cerebral Palsy: A Population-based Cohort Study
Article first published online: 10 OCT 2013
© 2013 John Wiley & Sons Ltd
Paediatric and Perinatal Epidemiology
Volume 27, Issue 6, pages 542–552, November 2013
How to Cite
Miller, J. E., Pedersen, L. H., Streja, E., Bech, B. H., Yeargin-Allsopp, M., Van Naarden Braun, K., Schendel, D. E., Christensen, D., Uldall, P. and Olsen, J. (2013), Maternal Infections during Pregnancy and Cerebral Palsy: A Population-based Cohort Study. Paediatric and Perinatal Epidemiology, 27: 542–552. doi: 10.1111/ppe.12082
- Issue published online: 17 OCT 2013
- Article first published online: 10 OCT 2013
- National Center on Birth Defects and Developmental Disabilities
- Centers for Disease Control and Prevention, Atlanta, Georgia
- University of Aarhus, Denmark
- maternal infections;
- bacterial infections;
- congenital cerebral palsy
Cerebral palsy (CP) is a common motor disability in childhood. We examined the association between maternal infections during pregnancy and the risk of congenital CP in the child.
Liveborn singletons in Denmark between 1997 and 2003 were identified from the Danish National Birth Registry and followed from 1 year of life until 2008. Redemption of antibiotics from the National Register of Medicinal Product Statistics and maternal infections reported by the National Hospital Register were used as markers of maternal infection during pregnancy. CP diagnoses were obtained from the Danish Cerebral Palsy Registry. Adjusted hazard ratio (HR) and 95% confidence interval (CI) were estimated by Cox proportional hazard models.
Of the 440 564 singletons with follow-up data, 840 were diagnosed with congenital CP. Maternal genito-urinary tract infections (HR 2.1, 95% CI 1.4, 3.2) were associated with CP in all births, in term births (HR 1.9, 95% CI 1.1, 3.2), in children with spastic CP (HR 2.1, 95% CI 1.4, 3.3), and among first-born children (HR 1.9, 95% CI 1.4, 3.3). Overall, we found associations between redeemed nitrofurantoin (HR 1.7, 95% CI 1.1, 2.8) and CP. Among trimester-specific exposures, CP risk was associated with prescriptions redeemed in the first trimester for any antibacterials, beta-lactam antibacterials, and nitrofurantoin, an antibiotic commonly used to treat lower urinary tract infection, and genito-urinary tract infections in the third trimester.
Genito-urinary tract infections and antibiotic use during pregnancy were associated with increased risks of CP, indicating that some maternal infections or causes of maternal infections present in prenatal life may be part of a causal pathway leading to CP.