Longitudinal Follow-up of Antibody Responses in Pediatric Patients... : The Pediatric Infectious Disease Journal
▻https://journals.lww.com/pidj/fulltext/2021/08000/longitudinal_follow_up_of_antibody_responses_in.2.aspx
A prospective multicenter study was performed using 315 samples of 74 confirmed and 10 probable coronavirus disease 2019 pediatric cases. About 20% of these cases were classified as asymptomatic, 74% as mild/moderate and 6% as severe/critical.
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#SARS-CoV-2 IgG antibody levels decreased after 6 months. The decrease was moderate in severe/critical cases. Overall, 95.8% of the patients remained positive up to 9 months after infection. Although the IgA response may be useful early on, the IgG response is useful after 14 days.