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. 2020 Nov 17;42(2):102828. doi: 10.1016/j.amjoto.2020.102828

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© 2020 Elsevier Inc. 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 — Procedure of nasopharyngeal swab for COVID-19 diagnosis through the transoral way.

(A) Transoral view: the swab reaches the oropharynx at level of the uvula with the collecting end oriented upwards. (B) Transoral view: to be sure of reaching the nasopharynx, the angled segment of the swab must be fully beyond the soft palate.

(C) Transnasal view: the swab is in nasopharynx it is rotated in a latero-lateral and/or cranio-caudal sense for a few seconds.