Lecce, Maurizio, Pier Mario Perrone, Federica Bonalumi, Silvana Castaldi, and Monica Cremonesi. “2020-21 Influenza Vaccination Campaign Strategy As a Model for the Third COVID-19 Vaccine Dose?”. Acta Biomedica Atenei Parmensis 92, no. S6 (October 19, 2021): e2021447. Accessed July 17, 2024. https://mattioli1885journals.com/index.php/actabiomedica/article/view/12230.