Preterm birth and Kawasaki disease: a nationwide Japanese population-based study

Area of Science:

• Pediatrics
• Neonatology
• Epidemiology

Background:

• Preterm birth is linked to increased hospital admissions for acute diseases in infancy and childhood.
• The specific risk of preterm children developing Kawasaki disease is not well-established.
• This study investigates the association between preterm birth and Kawasaki disease morbidity.

Purpose of the Study:

• To determine if preterm birth increases the risk of hospitalization due to Kawasaki disease.
• To explore the potential protective role of breastfeeding in mitigating Kawasaki disease risk among preterm infants.

Main Methods:

• A large nationwide survey in Japan involving 36,885 children born in 2010 (34,880 term, 2005 preterm).
• Analysis of hospitalization data for Kawasaki disease.
• Log-linear regression models adjusted for various child, parental, and demographic factors.

Main Results:

• Preterm infants showed a significantly higher likelihood of hospitalization for Kawasaki disease (adjusted risk ratio: 1.55).
• This increased risk was particularly evident in preterm infants who were partially or formula-fed compared to term infants exclusively breastfed.
• Exclusive breastfeeding appeared to modify the adverse health outcomes associated with preterm birth.

Conclusions:

• Preterm infants are at a significantly elevated risk for developing Kawasaki disease.
• Exclusive breastfeeding may serve as a protective factor against Kawasaki disease in preterm infants.