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Temporal trends in pediatric intestinal intussusception following the COVID-19 outbreak in Seoul, Korea

Jung Hee Hong1, Kiook Baek2

  • 1Department of Radiology, Keimyung University College of Medicine, Daegu, Republic of Korea.

Pediatrics International : Official Journal of the Japan Pediatric Society
|October 4, 2025
PubMed

Insights

The COVID-19 pandemic significantly reduced pediatric intussusception cases, suggesting a link between disease incidence and interpersonal contact. This study analyzed intussusception trends in children during the pandemic.

Area of Science:

  • Pediatric Gastroenterology
  • Epidemiology
  • Infectious Disease Dynamics

Background:

  • The COVID-19 pandemic caused global disruptions, impacting disease epidemiology due to altered social behaviors.
  • Pediatric intestinal intussusception, a condition with an unknown cause, saw potential shifts in incidence during this period.

Purpose of the Study:

  • To investigate the changes in pediatric intestinal intussusception incidence during the COVID-19 pandemic.
  • To analyze the relationship between pandemic-related factors and intussusception occurrence in children.

Main Methods:

  • Utilized weekly intussusception case data for children ≤10 years old in Seoul from 2009-2022.
  • Employed spline functions and student methods for trend analysis and breakpoint identification.
  • Applied Bayesian Structural Time Series (BSTS) models to assess incidence changes and evaluated the ratio of complicated to uncomplicated cases.

Main Results:

  • A significant decline in intussusception incidence was observed around 2020, coinciding with the pandemic's onset.
  • Total cases decreased by 58.8%, with uncomplicated cases down 62.4% and complicated cases down 51.1%.
  • The ratio of complicated to uncomplicated intussusception cases increased by 43.3% post-pandemic onset.

Conclusions:

  • Pediatric intussusception incidence markedly decreased following the emergence of COVID-19.
  • Findings support the hypothesis that disease occurrence is associated with interpersonal contact and infectious exposures.
Abstract

Keywords:
COVID‐19 pandemicepidemiologyintussusceptiontime series analysis

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