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. 2022 Feb 24;236:108959. doi: 10.1016/j.clim.2022.108959

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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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Fig. 2 — Patients with serial anti-S IgM and anti-N IgG measurements. The kinetic pattern of anti-SARS-Cov-2 anti-S IgM and anti-N IgG antibody responses observed for the whole population was also apparent among patients with two or more serial measurements (A, anti-S IgM; B anti-N IgG, lines connect serial antibody index values for individual patients).