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. 2022 Apr 26;121:58–65. doi: 10.1016/j.ijid.2022.04.042

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© 2022 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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Correlation of IgG and NAb titers in serum samples between QD-LFIA, ELISA and pVNT. (A, B) Correlation between QD-LFIA and ELISA, or QD-LFIA and pVNT for testing of 81 convalescent COVID-19 patients’ samples. (C, D) Correlation between QD-LFIA and ELISA, or QD-LFIA and pVNT for testing of 49 vaccinees’ samples.