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<p>Chikungunya exposure in-utero is linked to neonatal morbidity and neurodevelopmental effects. We examined the long-term morbidity associated with in-utero Chikungunya. This registry-based cohort study linked records of infants born in Brazil between 2015 and 2018, with all-cause first hospitalization and death as outcome. Infants were followed until the outcome, their third birthday, or the end of the study. Adjusted stratified Cox models were used to estimate hazard ratios (HR), 95% confidence intervals (95% CIs), and absolute risk differences. A total of 1,821 exposed and 18,210 unexposed infants were included. The HR for hospitalization was 1.21 (95% CI: 1.11–1.36), corresponding to 37 excess hospitalizations per 1000 exposed (95% CI: 16-64). The risk was twofold for intrapartum exposure (HR 2.08, 95% CI: 1.33–3.44) and elevated for first- and second-trimester exposure. Evidence for risk of death was limited. Here we show an elevated hospitalization risk associated with in-utero Chikungunya exposure.</p>

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In-utero exposure to chikungunya and child morbimortality: a population-based study using linked routine data

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年3月21日

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  • Mio Kushibuchi,
  • Orlagh Carroll,
  • Thiago Cerqueira-Silva,
  • Viviane S. Boaventura,
  • Maria Glória Teixeira,
  • Mauricio L. Barreto,
  • Enny S. Paixão

摘要

Chikungunya exposure in-utero is linked to neonatal morbidity and neurodevelopmental effects. We examined the long-term morbidity associated with in-utero Chikungunya. This registry-based cohort study linked records of infants born in Brazil between 2015 and 2018, with all-cause first hospitalization and death as outcome. Infants were followed until the outcome, their third birthday, or the end of the study. Adjusted stratified Cox models were used to estimate hazard ratios (HR), 95% confidence intervals (95% CIs), and absolute risk differences. A total of 1,821 exposed and 18,210 unexposed infants were included. The HR for hospitalization was 1.21 (95% CI: 1.11–1.36), corresponding to 37 excess hospitalizations per 1000 exposed (95% CI: 16-64). The risk was twofold for intrapartum exposure (HR 2.08, 95% CI: 1.33–3.44) and elevated for first- and second-trimester exposure. Evidence for risk of death was limited. Here we show an elevated hospitalization risk associated with in-utero Chikungunya exposure.