Table 1. Population, outcomes and study types (POS) framework for inclusion of studies on transmission of SARS-CoV-2 by children, 30 December 2019–10 August 2020.

Population, outcomes and study types
Population	Children (under the age of 18 years) with a laboratory-confirmed positive test for SARS-CoV-2; Subgroups of interest: asymptomatic vs symptomatic (mild, moderate, severe)a
Outcome	Primary outcomes: Confirmed transmission of SARS-CoV-2 rates Proportion of which are household transmissions Mean time to transmission/symptoms onset
Types of studies	Include: Any study that reports on transmission of SARS-CoV-2 by children	Exclude: Studies where SARS-CoV-2 was not confirmed with a laboratory test

COVID-19: coronavirus disease; SARS-CoV-2: severe acute respiratory syndrome coronavirus 2.

^a The disease severity classification by the World Health Organisation at time of writing: https://apps.who.int/iris/handle/10665/330893.