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. 2021 Dec 7;37(13):110169. doi: 10.1016/j.celrep.2021.110169

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© 2021 The Authors

Since January 2020 Elsevier has created a COVID-19 resource centre with free information in English and Mandarin on the novel coronavirus COVID-19. The COVID-19 resource centre is hosted on Elsevier Connect, the company's public news and information website. Elsevier hereby grants permission to make all its COVID-19-related research that is available on the COVID-19 resource centre - including this research content - immediately available in PubMed Central and other publicly funded repositories, such as the WHO COVID database with rights for unrestricted research re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for free by Elsevier for as long as the COVID-19 resource centre remains active.

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Longitudinal antibody level changes in 28 patients with COVID-19

One-hundred and seventy-four sera from 28 patients with COVID-19 who donated specimens both in the first 2 weeks after symptom onset and at later time points were analyzed. The five time point rolling averages for differences in antibody levels compared to the first sample donated by each individual patient are shown. Shaded areas depict standard deviations. NFU, normalized fluorescence units.