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. 2021 Dec 22;84(4):579–613. doi: 10.1016/j.jinf.2021.12.018

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© 2021 The British Infection Association. Published by Elsevier Ltd. All rights reserved.

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 — Linear regression analysis of initial SARS-CoV-2 RNA loads from individuals infected with COVID by the Delta (A) and Alpha (B) variants according to time of sampling since symptoms onset. Regression lines best fitting SARS-CoV-2 RNA load decay are depicted.