Secondary transmission of COVID-19 in preschool and school settings in northern Italy after their reopening in September 2020: a population-based study
Larosa, Elisabetta and Djuric, Olivera and Cassinadri, Mariateresa and Cilloni, Silvia and Bisaccia, Eufemia and Vicentini, Massimo and Venturelli, Francesco and Giorgi Rossi, Paolo and Pezzotti, Patrizio and Bedeschi, Emanuela and the Reggio Emilia Covid-19 Working Group, Eurosurveillance, 25, 2001911 (2020), https://doi.org/10.2807/1560-7917.ES.2020.25.49.2001911