Saliva for COVID-19 Testing: Simple but Useless or an Undervalued Resource?

Frontiers in Virology

卷:1

Penny Gwynne¹  Francesco Saverio Tarantini¹  Chris Denning¹  Amy Stroud¹  Caroline Reffin¹  Moira Petrie¹  Hannah Tomlin¹  Harry Jenkins¹  Mohammad Ilyas¹  Martin Stonebridge¹  Asta Arendt-Tranholm¹  Lara Doolan¹  Ralph Hyde¹  Jamie Louise Thompson¹  Siyu Wu¹  Joanne Porte¹  Danielle Scales¹  Kazuyo Kaneko¹  Mairead Ward¹  Claire Seedhouse¹  Ian Hill¹  Ana Tellechea Lopez¹  Sara Pijuan-Galito¹  Andrew V. Benest¹  I-ning Lee¹  Katarzyna Lis-Slimak¹  Andy Coultas²  Jonathan Ball³  Joseph Chappell³  James Hassall³  Patrick McClure³  Patrick Tighe³  Philip G. McTernan⁴ 

[1] Biodiscovery Institute, University of Nottingham, Nottingham, United Kingdom;

[2] Department of Clinical Microbiology, Kings Mill Hospital, Sutton-in-Ashfield, United Kingdom;

[3] Faculty of Medicine and Health Sciences, University of Nottingham, Nottingham, United Kingdom;

[4] School of Science and Technology, Nottingham Trent University, Nottingham, United Kingdom;

关键词: SARS-CoV-2;    lateral flow;    polymerase chain reaction;    COVID-19;    nasopharyngeal swab;    saliva;   

DOI  :  10.3389/fviro.2021.778790

来源: DOAJ

【 摘 要 】

During the COVID-19 pandemic, countries with robust population-based asymptomatic testing were generally successful in controlling virus spread, hence reducing hospitalizations and deaths. This effectiveness inspired widespread asymptomatic surveillance for COVID-19/SARS-CoV-2 globally. Polarized vaccination programs, coupled with the relatively short-lived immunity vaccines provide, mean that reciprocal cross-border exchanges of each new variant are likely, as evidenced by Delta and Gamma, and asymptomatic testing will be required for the foreseeable future. Reliance on nasopharyngeal swabs contributes to “testing fatigue” arising due to difficulties in standardizing administration, unpleasantness, and inappropriateness of use in younger people or individuals with special needs. There has also been erosion in confidence of testing due to variable and/or poor accuracy of lateral flow devices to detect COVID-19. Here, we question why saliva-based PCR assays are not being used more widely, given that standardization is easy and this non-invasive test is suitable for everyone, providing high sensitivity and accuracy. We reflect on our experience with the University of Nottingham COVID-19 Asymptomatic Testing, where (as of October 2021) 96,317 samples have been processed by RT-qPCR from 23,740 repeat saliva donors, yielding 465 positive cases. We challenge myths that saliva is difficult to process, concluding that it is an undervalued resource for both asymptomatic and symptomatic detection of SARS-CoV-2 genomes to an accuracy of >99% and a sensitivity of 1–10 viral copies/μl. In July 2021, our data enabled Nottingham to become the first UK University to gain accreditation and the first UK institute to gain this accolade for saliva.

【 授权许可】

Unknown