• Chih-Fu Wei, Mei-Huei Chen, Ching-Chun Lin, Meng-Shan Tsai, Yueliang Leon Guo, Shio-Jean Lin, Mei-Hwan Wu, Wu-Shiun Hsieh, and Pau-Chung Chen.
• Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA.
• J Formos Med Assoc. 2024 Aug 1; 123 (8): 843848843-848.

AimCesarean section delivery is associated with microbiota disruption and immuno-dysregulation during childhood, but the association with Kawasaki disease remains uncertain. We aimed to evaluate the association between Cesarean section and Kawasaki disease.MethodsWe examined the association between Kawasaki disease between six and eighteen months and Cesarean section within a birth cohort of 15,796 mother-infant pairs in Taiwan. The associations were assessed with Poisson regression in the study population, in the 1:2 propensity score-matched subpopulation, and compared with febrile convulsion, trauma and accidents during the same interval as negative control outcomes.ResultsCesarean section was found to increase the risk of Kawasaki disease among overall population (adjusted relative risk [aRR]: 2.22, 95 % confidence interval (CI): 1.14-4.34) and the matched subpopulation (aRR: 2.29, 95 % CI: 1.14-4.68 in PS-matched subpopulation). Meanwhile, there was no association between Cesarean section and the clinic visits for febrile convulsion, trauma and accidents.ConclusionIn conclusion, this study identified a potential association between Cesarean section delivery and a higher risk of Kawasaki disease during six-to eighteen months of the prospective birth cohort in Taiwan.Copyright © 2024 Formosan Medical Association. Published by Elsevier B.V. All rights reserved.

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