Vaccine effectiveness against severe acute respiratory infections (SARI) COVID-19 hospitalisations estimated from real-world surveillance data, Slovenia, October 2021 Grgič Vitek, Marta and Klavs, Irena and Učakar, Veronika and Serdt, Mojca and Mrzel, Maja and Vrh, Marjana and Fafangel, Mario, Eurosurveillance, 27, 2101110 (2022), https://doi.org/10.2807/1560-7917.ES.2022.27.1.2101110