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. 2021 Jan 2;104:65–72. doi: 10.1016/j.ijid.2020.12.079

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© 2020 The Author(s)

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.

PMC Copyright notice

Correlations between severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) viral load and day after the onset of coronavirus disease 2019 (COVID-19) symptoms with the results of rapid antigen testing. (A) Samples in viral transport medium; the rapid antigen testing results for viral transport medium samples. (B) Samples in the reagent of the rapid antigen test (ESPLINE kit); the rapid antigen testing results for the reagent samples.