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Do we cause false positives? An experimental series on droplet or airborne SARS-CoV-2 contamination of sampling tubes during swab collection in a test center


Scheier, Thomas; Shah, Cyril; Huber, Michael; Sax, Hugo; Hasse, Barbara; Günthard, Huldrych F; Trkola, Alexandra; Schreiber, Peter W (2021). Do we cause false positives? An experimental series on droplet or airborne SARS-CoV-2 contamination of sampling tubes during swab collection in a test center. Antimicrobial Resistance and Infection Control, 10:51.

Abstract

The rapid spread of the coronavirus disease 2019 pandemic urged immense testing capacities as one cornerstone of infection control. Many institutions opened outpatient SARS-CoV-2 test centers to allow large number of tests in comparatively short time frames. With increasing positive test rates, concerns for a possible airborne or droplet contamination of specimens leading to false-positive results were raised. In our experimental series performed in a dedicated SARS-CoV-2 test center, 40 open collection tubes placed for defined time periods in proximity to individuals were found to be SARS-CoV-2 negative. These findings argue against false-positive SARS-CoV-2 results due to droplet or airborne contamination.

Abstract

The rapid spread of the coronavirus disease 2019 pandemic urged immense testing capacities as one cornerstone of infection control. Many institutions opened outpatient SARS-CoV-2 test centers to allow large number of tests in comparatively short time frames. With increasing positive test rates, concerns for a possible airborne or droplet contamination of specimens leading to false-positive results were raised. In our experimental series performed in a dedicated SARS-CoV-2 test center, 40 open collection tubes placed for defined time periods in proximity to individuals were found to be SARS-CoV-2 negative. These findings argue against false-positive SARS-CoV-2 results due to droplet or airborne contamination.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > University Hospital Zurich > Clinic for Infectious Diseases
04 Faculty of Medicine > Institute of Medical Virology
Dewey Decimal Classification:610 Medicine & health
Scopus Subject Areas:Health Sciences > Public Health, Environmental and Occupational Health
Health Sciences > Microbiology (medical)
Health Sciences > Infectious Diseases
Health Sciences > Pharmacology (medical)
Uncontrolled Keywords:COVID, COVID-19
Language:English
Date:9 March 2021
Deposited On:11 Nov 2021 09:40
Last Modified:26 Jun 2024 01:43
Publisher:BioMed Central
ISSN:2047-2994
OA Status:Gold
Free access at:PubMed ID. An embargo period may apply.
Publisher DOI:https://doi.org/10.1186/s13756-021-00920-z
PubMed ID:33750477
  • Content: Published Version
  • Licence: Creative Commons: Attribution 4.0 International (CC BY 4.0)