Signorelli, Carlo, et al. “SARS-CoV-2 Transmission in the Lombardy Region: the Increase of Household Contagion and Its Implication for Containment Measures”. Acta Biomedica Atenei Parmensis, vol. 91, no. 4, Nov. 2020, p. e2020195, https://doi.org/10.23750/abm.v91i4.10994.