ArticleDiabetologia2025
Trends in type 1 diabetes incidence between 2007 and 2023 and their association with SARS-CoV-2 infection in a population-based matched cohort study among individuals under 30 years old in Sweden.
Article in Diabetologia, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- SARS-CoV-2 infection and COVID-19 vaccination and the risk for new-onset type 1 diabetes: a register-based population study in Sweden.Diabetologia · 2026Article
- Hyperglycemia in Cats Infected by SARS-CoV-2: Pancreatic Alterations and Potential Antiviral Therapeutics.Microorganisms · 2026Review
- Variations in the Risk of New-Onset Diabetes Following COVID-19 Infection Across Body Mass Index, Deprivation, Ethnicity and Geographic Regions: Population-Based Cohort Study in 42 Million People in England.Diabetes, obesity & metabolism · 2026Article
- Twenty-five years of pediatric type 1 diabetes in Serbia: Trends in age at diagnosis, seasonal variation, and the proportion of diabetic ketoacidosis before, during, and after the COVID-19 pandemic.Clinical pediatric endocrinology : case reports and clinical investigations : official journal of the Japanese Society for Pediatric Endocrinology · 2026Article
- Increasing incidence of type 1 diabetes in children and adolescents from 2012 to 2021 in Germany: trends before and during the COVID-19 pandemic.European journal of epidemiology · 2026Article
- Associations of body weight and COVID-19 with autoimmunity in pediatric new-onset type 1 diabetes: results from the prospective DPV registry.BMJ open diabetes research & care · 2026Article
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4 authors.
Funding
Abstract
aims/hypothesisThe incidence of type 1 diabetes increased during the pandemic in various countries. SARS-CoV-2 infections may trigger the development of type 1 diabetes, but the evidence is inconclusive. This study aimed to assess trends in type 1 diabetes incidence between 2007 and 2023, and to quantify the association between SARS-CoV-2 infections and the risk for developing type 1 diabetes.
methodsThe study included all individuals under 30 years old registered in Sweden. Deviations in type 1 diabetes incidence from pre-pandemic trends (2007-2019) were assessed for each pandemic year (2020-2023) using Poisson regression. The effect of SARS-CoV-2 infections was assessed using Cox proportional hazards models in a cohort of infected individuals with five control individuals from the infection date of the case, matched by birth year, sex and region.
resultsCompared with the predicted linear trend, type 1 diabetes incidence increased by 12% during 2021 (incidence rate ratio [IRR] 1.12; 95% CI 1.06, 1.19) and 9% during 2022 (IRR 1.09; 95% CI 1.02, 1.16), but reverted to pre-pandemic trends in 2023. Overall, the adjusted HR for developing type 1 diabetes after SARS-CoV-2 infection was 0.96 (95% CI 0.79, 1.16). Children between 5 and 10 years old were more likely to develop type 1 diabetes within the first 28 days after infection (HR 2.68; 95% CI 1.22, 5.89), although their hazard over the whole follow-up period was not increased. CONCLUSIONS/
interpretationSweden, with its non-restrictive pandemic response, saw a transient increase in type 1 diabetes incidence that was only partially associated with SARS-CoV-2 infections. Other explanations should be investigated, including environmental and lifestyle factors.
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