A team led by a researcher at Schneider Children's Medical Center of Israel in Petah Tikva compared the publicly available daily data of 21,615 children who tested positive for COVID-19 from Aug 1 to Oct 2, 2020, with those of 50,811 children who tested positive from Dec 3, 2020, to Feb 3, 2021. The researchers adjusted weekly incidence rates according to the number of COVID-19 tests performed.