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. 2020 Jul 3;76(4):490–499.e1. doi: 10.1053/j.ajkd.2020.06.008

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© 2020 by the National Kidney Foundation, Inc.

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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Representative images from computed tomography (CT) of the chest of 2 patients with SARS-CoV-2 infections identified by antibody testing. (A-D) Transverse images from CT of the chest from a 39-year-old man who was asymptomatic but with a transient decrease in white blood cell and lymphocyte counts and elevated C-reactive protein level. The images were obtained (A) 42, (B) 35, (C) 21, and (D) 7 days before the first positive antibody (immunoglobulin G [IgG]) response was found in this patient, showing a time-dependent resolution of a unilateral ground-glass opacity in the right lower lobe. (E-H) Transverse images from CT of the chest from a 63-year-old woman with mild cough for a week and elevated C-reactive protein level. Images were obtained (E) 39, (F) 36, and (G) 0 days before and (H) 20 days after the first positive antibody (IgG) response against SARS-CoV-2 was found in this patient. Bilateral patchy opacity and consolidation in the earliest images were gradually absorbed and disappeared over time.