Population Study

Swedish Population Data Suggest SARS-CoV-2 Infection and COVID-19 Vaccination Do Not Confer a Sustained Causal Risk of New-Onset Type 1 Diabetes

In a nationwide Swedish cohort, type 1 diabetes diagnoses rose briefly after SARS-CoV-2 infection and first vaccine dose, but the signal was short-lived, supporting diagnostic acceleration rather than a durable causal effect.