2024 No https://doi.org/10.1007/s00103-024-03956-9 Deckart, Christine Europe Observational Epidemiology Study Modeling Students Elementary (K-5) Middle/Jr High (6-8) High School (9-12) Viruses COVID rates Incidence Interrupted times series analysis Public health response SARS-CoV-2 Schools Using interrupted time series analysis and regression modeling, this study assessed infection trends in Bavaria during the second COVID-19 wave, finding school closures significantly reduced cases among 6–18-year-olds.