Fig. 1
From: Neutralizing antibodies to SARS-CoV-2 variants of concern: a pediatric surveillance study
Participant Inclusion and Groups. A schematic illustrates the participant enrollment and division into 4 groups based on COVID-19 diagnosis and vaccination status. The classification “Possible previous COVID-19” refers to a positive result for the nucleocapsid antibody test or a positive PCR on a nasopharyngeal swab. The classification “No suspected COVID-19” refers to a negative nucleocapsid antibody test result with or without a negative PCR on a nasopharyngeal swab.
