Overcoming limitations in the availability of swabs systems used for SARS-CoV-2 laboratory diagnostics

Abstract The diagnosis of COVID-19 relies on the direct detection of SARS-CoV-2 RNA in respiratory specimens by RT-PCR. The pandemic spread of the disease caused an imbalance between demand and supply of materials and reagents needed for diagnostic purposes including swab sets. In a comparative effe...

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Main Authors: Manfred Nairz, Rosa Bellmann-Weiler, Miriam Ladstätter, Falko Schüllner, Martina Zimmermann, Anna-Maria Koller, Silvia Blunder, Helene Naschberger, Werner Klotz, Manfred Herold, Sylvia Kerndler, Martina Jeske, David Haschka, Verena Petzer, Andrea Schroll, Thomas Sonnweber, Ivan Tancevski, Gernot Fritsche, Mariana E. G. de Araujo, Taras Stasyk, Lukas A. Huber, Andrea Griesmacher, Igor Theurl, Günter Weiss
Format: Article
Language:English
Published: Nature Portfolio 2021-01-01
Series:Scientific Reports
Online Access:https://doi.org/10.1038/s41598-021-81782-8
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author Manfred Nairz
Rosa Bellmann-Weiler
Miriam Ladstätter
Falko Schüllner
Martina Zimmermann
Anna-Maria Koller
Silvia Blunder
Helene Naschberger
Werner Klotz
Manfred Herold
Sylvia Kerndler
Martina Jeske
David Haschka
Verena Petzer
Andrea Schroll
Thomas Sonnweber
Ivan Tancevski
Gernot Fritsche
Mariana E. G. de Araujo
Taras Stasyk
Lukas A. Huber
Andrea Griesmacher
Igor Theurl
Günter Weiss
author_facet Manfred Nairz
Rosa Bellmann-Weiler
Miriam Ladstätter
Falko Schüllner
Martina Zimmermann
Anna-Maria Koller
Silvia Blunder
Helene Naschberger
Werner Klotz
Manfred Herold
Sylvia Kerndler
Martina Jeske
David Haschka
Verena Petzer
Andrea Schroll
Thomas Sonnweber
Ivan Tancevski
Gernot Fritsche
Mariana E. G. de Araujo
Taras Stasyk
Lukas A. Huber
Andrea Griesmacher
Igor Theurl
Günter Weiss
author_sort Manfred Nairz
collection DOAJ
description Abstract The diagnosis of COVID-19 relies on the direct detection of SARS-CoV-2 RNA in respiratory specimens by RT-PCR. The pandemic spread of the disease caused an imbalance between demand and supply of materials and reagents needed for diagnostic purposes including swab sets. In a comparative effectiveness study, we conducted serial follow-up swabs in hospitalized laboratory-confirmed COVID-19 patients. We assessed the diagnostic performance of an in-house system developed according to recommendations by the US CDC. In a total of 96 serial swabs, we found significant differences in the accuracy of the different swab systems to generate a positive result in SARS-CoV-2 RT-PCR, ranging from around 50 to 80%. Of note, an in-house swab system was superior to most commercially available sets as reflected by significantly lower Ct values of viral genes. Thus, a simple combination of broadly available materials may enable diagnostic laboratories to bypass global limitations in the supply of swab sets.
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spelling doaj.art-c56c694f023548f3a8774472903a47bc2022-12-21T21:53:21ZengNature PortfolioScientific Reports2045-23222021-01-011111910.1038/s41598-021-81782-8Overcoming limitations in the availability of swabs systems used for SARS-CoV-2 laboratory diagnosticsManfred Nairz0Rosa Bellmann-Weiler1Miriam Ladstätter2Falko Schüllner3Martina Zimmermann4Anna-Maria Koller5Silvia Blunder6Helene Naschberger7Werner Klotz8Manfred Herold9Sylvia Kerndler10Martina Jeske11David Haschka12Verena Petzer13Andrea Schroll14Thomas Sonnweber15Ivan Tancevski16Gernot Fritsche17Mariana E. G. de Araujo18Taras Stasyk19Lukas A. Huber20Andrea Griesmacher21Igor Theurl22Günter Weiss23Department of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Pneumology, Medical University of InnsbruckDepartment of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Pneumology, Medical University of InnsbruckHospital Pharmacy, University Hospital of InnsbruckHospital Pharmacy, University Hospital of InnsbruckDepartment of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Pneumology, Medical University of InnsbruckDepartment of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Pneumology, Medical University of InnsbruckDepartment of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Pneumology, Medical University of InnsbruckDepartment of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Pneumology, Medical University of InnsbruckDepartment of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Pneumology, Medical University of InnsbruckDepartment of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Pneumology, Medical University of InnsbruckHospital Pharmacy, University Hospital of InnsbruckHospital Pharmacy, University Hospital of InnsbruckDepartment of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Pneumology, Medical University of InnsbruckDepartment of Internal Medicine V, Hematology and Oncology, Medical University of InnsbruckDepartment of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Pneumology, Medical University of InnsbruckDepartment of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Pneumology, Medical University of InnsbruckDepartment of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Pneumology, Medical University of InnsbruckDepartment of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Pneumology, Medical University of InnsbruckInstitute of Cell Biology, Biocenter, Medical University of InnsbruckInstitute of Cell Biology, Biocenter, Medical University of InnsbruckInstitute of Cell Biology, Biocenter, Medical University of InnsbruckCentral Institute of Medical and Chemical Laboratory Diagnostics, University Hospital of InnsbruckDepartment of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Pneumology, Medical University of InnsbruckDepartment of Internal Medicine II, Infectious Diseases, Immunology, Rheumatology, Pneumology, Medical University of InnsbruckAbstract The diagnosis of COVID-19 relies on the direct detection of SARS-CoV-2 RNA in respiratory specimens by RT-PCR. The pandemic spread of the disease caused an imbalance between demand and supply of materials and reagents needed for diagnostic purposes including swab sets. In a comparative effectiveness study, we conducted serial follow-up swabs in hospitalized laboratory-confirmed COVID-19 patients. We assessed the diagnostic performance of an in-house system developed according to recommendations by the US CDC. In a total of 96 serial swabs, we found significant differences in the accuracy of the different swab systems to generate a positive result in SARS-CoV-2 RT-PCR, ranging from around 50 to 80%. Of note, an in-house swab system was superior to most commercially available sets as reflected by significantly lower Ct values of viral genes. Thus, a simple combination of broadly available materials may enable diagnostic laboratories to bypass global limitations in the supply of swab sets.https://doi.org/10.1038/s41598-021-81782-8
spellingShingle Manfred Nairz
Rosa Bellmann-Weiler
Miriam Ladstätter
Falko Schüllner
Martina Zimmermann
Anna-Maria Koller
Silvia Blunder
Helene Naschberger
Werner Klotz
Manfred Herold
Sylvia Kerndler
Martina Jeske
David Haschka
Verena Petzer
Andrea Schroll
Thomas Sonnweber
Ivan Tancevski
Gernot Fritsche
Mariana E. G. de Araujo
Taras Stasyk
Lukas A. Huber
Andrea Griesmacher
Igor Theurl
Günter Weiss
Overcoming limitations in the availability of swabs systems used for SARS-CoV-2 laboratory diagnostics
Scientific Reports
title Overcoming limitations in the availability of swabs systems used for SARS-CoV-2 laboratory diagnostics
title_full Overcoming limitations in the availability of swabs systems used for SARS-CoV-2 laboratory diagnostics
title_fullStr Overcoming limitations in the availability of swabs systems used for SARS-CoV-2 laboratory diagnostics
title_full_unstemmed Overcoming limitations in the availability of swabs systems used for SARS-CoV-2 laboratory diagnostics
title_short Overcoming limitations in the availability of swabs systems used for SARS-CoV-2 laboratory diagnostics
title_sort overcoming limitations in the availability of swabs systems used for sars cov 2 laboratory diagnostics
url https://doi.org/10.1038/s41598-021-81782-8
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