Longevity of mucosal and systemic SARS-CoV-2 antibodies in South African vs Dutch children with respiratory tract infections ...

Background: Children represent a small fraction of global COVID-19 cases, but data from low- and middle-income countries suggest that children in these regions may face high morbidity and mortality rates. Objectives: To assess the longitudinal dynamics of SARS-CoV-2 antibodies in children presenting with respiratory tract infections (RTIs), compare antibody responses between South African and Dutch pediatric cohorts, and investigate the correlation between mucosal and systemic antibody levels. Methods: Between June 2020 and September 2022, 124 children hospitalised with RTIs at Tygerberg Hospi... Mehr ...