Abstract
OBJECTIVE: We tested the hypothesis that term and preterm infants exposed to maternal infection at the time of delivery are at increased risk of developing cerebral palsy (CP). STUDY DESIGN: A population-based case-control study was conducted using Washington State birth certificate data linked to hospital discharge data. Cases (688) were children <or=6 years old, singleton births, hospitalized during 1987 to 1999 with an ICD-9 diagnosis code for CP. Controls were 3,068 singleton birth infants randomly selected from birth records for the same years without CP-related hospitalizations. Infection information was available only for the birth hospitalization. RESULTS: Infants of women who had any infection during their hospitalization for delivery were at increased risk of CP (odds ratio (OR) 3.1, 95\% confidence interval (CI) 2.3 to 4.2). This was observed for term deliveries (OR 1.8, 95\% CI 1.1 to 2.8) and preterm deliveries (OR 2.3, 95\% CI 1.3 to 4.2). CONCLUSIONS: Our results suggest that maternal infection is a risk factor for CP in both term and preterm infants.
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