Sigal GB, Novak T, Mathew A, Chou J, et al. Measurement of SARS-CoV-2 antigens in plasma of pediatric patients with acute COVID-19 or MIS-C using an ultrasensitive and quantitative immunoassay. Clin Infect Dis 2022 Feb 25. pii: 6537114. doi: 10.1093.
PMID: 35213684