“SARS-CoV-2 Transmission in the Lombardy Region: the Increase of Household Contagion and Its Implication for Containment Measures”. Acta Biomedica Atenei Parmensis 91, no. 4 (November 20, 2020): e2020195. Accessed June 12, 2024. https://www.mattioli1885journals.com/index.php/actabiomedica/article/view/10994.