Decline in Type 1 Diabetes in Young Children After Rotavirus Vaccination: Data From 8 Countries

Mary A M Rogers1

  • 1Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan.

AJPM Focus
|October 13, 2025
PubMed

Insights

National rotavirus vaccination programs may reduce Type 1 diabetes incidence in young children. Data from 8 countries showed a decrease in Type 1 diabetes cases after vaccine introduction, suggesting a protective effect.

Area of Science:

  • Pediatric Endocrinology
  • Infectious Disease Epidemiology
  • Immunology

Background:

  • Rotavirus is a significant cause of gastroenteritis in children.
  • Rotavirus infection is linked to pancreatic cell apoptosis and hyperglycemia.
  • A potential association between rotavirus and Type 1 diabetes mellitus (T1DM) is suspected.

Purpose of the Study:

  • To investigate the impact of national rotavirus vaccination programs on T1DM incidence in young children.
  • To determine if T1DM rates declined following the implementation of rotavirus vaccination.

Main Methods:

  • Utilized an interrupted time series design to analyze country-specific T1DM incidence rates in children under 5.
  • Collected data on T1DM incidence and rotavirus vaccine introduction from the WHO.
  • Compared pre-vaccination T1DM rates with post-vaccination rates.

Main Results:

  • Data from 8 countries were analyzed for T1DM incidence in children under 5 before and after rotavirus vaccination.
  • A decrease in T1DM incidence was observed in 7 out of 8 countries following vaccine introduction.
  • One country had insufficient data for effect evaluation due to a small number of annual cases.

Conclusions:

  • Findings suggest that national rotavirus vaccination programs may be associated with reduced rates of T1DM in young children.
  • Rotavirus vaccination could play a role in mitigating the risk of T1DM development.
  • Further research may elucidate the precise mechanisms linking rotavirus and T1DM.
Abstract