What is the difference in severity of paediatric coronavirus disease 2019?

Coronavirus disease 2019 (COVID-19), which is caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has generally been reported to be mild in pediatric patients. Recently, Brisca et al. reported none of 11 hospitalized pediatric patients required oxygen therapy, respiratory support, or intensive care unit (ICU) admission in a tertiary center in Italy, indicating that they had mild symptoms.