Extended Data Table 1.

Summary of patient metadata

Patients were divided into columns according to COVID-19 status. Metadata on median age, sex, ethnicity, peripheral blood counts at the time of sampling, reported symptoms, respiratory support, COVID-19 severity, diagnosis of multisystem inflammatory syndrome in children (MIS-C), detected co-infection and specific anti-COVID-19 treatment prior to sampling, are shown. Abbreviations: HFNC = high flow nasal cannula, NIPPV = non-invasive positive pressure ventilation, IMV = invasive mechanical ventilation, NA = not assessed.