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Liu Y, Kumblathan T, Tao J, Xu J, Feng W, Xiao H, Hu J, Huang CV, Wu Y, Zhang H, Li XF, Le XC. Recent advances in RNA sample preparation techniques for the detection of SARS-CoV-2 in saliva and gargle. Trends Analyt Chem 2023; 165:117107. [PMID: 37317683 PMCID: PMC10204347 DOI: 10.1016/j.trac.2023.117107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2023] [Revised: 05/19/2023] [Accepted: 05/19/2023] [Indexed: 06/16/2023]
Abstract
Molecular detection of SARS-CoV-2 in gargle and saliva complements the standard analysis of nasopharyngeal swabs (NPS) specimens. Although gargle and saliva specimens can be readily obtained non-invasively, appropriate collection and processing of gargle and saliva specimens are critical to the accuracy and sensitivity of the overall analytical method. This review highlights challenges and recent advances in the treatment of gargle and saliva samples for subsequent analysis using reverse transcription polymerase chain reaction (RT-PCR) and isothermal amplification techniques. Important considerations include appropriate collection of gargle and saliva samples, on-site inactivation of viruses in the sample, preservation of viral RNA, extraction and concentration of viral RNA, removal of substances that inhibit nucleic acid amplification reactions, and the compatibility of sample treatment protocols with the subsequent nucleic acid amplification and detection techniques. The principles and approaches discussed in this review are applicable to molecular detection of other microbial pathogens.
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Affiliation(s)
- Yanming Liu
- Division of Analytical and Environmental Toxicology, Department of Laboratory Medicine and Pathology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, T6G 2G3, Canada
| | - Teresa Kumblathan
- Division of Analytical and Environmental Toxicology, Department of Laboratory Medicine and Pathology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, T6G 2G3, Canada
| | - Jeffrey Tao
- Division of Analytical and Environmental Toxicology, Department of Laboratory Medicine and Pathology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, T6G 2G3, Canada
| | - Jingyang Xu
- Division of Analytical and Environmental Toxicology, Department of Laboratory Medicine and Pathology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, T6G 2G3, Canada
| | - Wei Feng
- Division of Analytical and Environmental Toxicology, Department of Laboratory Medicine and Pathology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, T6G 2G3, Canada
| | - Huyan Xiao
- Division of Analytical and Environmental Toxicology, Department of Laboratory Medicine and Pathology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, T6G 2G3, Canada
| | - Jianyu Hu
- Division of Analytical and Environmental Toxicology, Department of Laboratory Medicine and Pathology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, T6G 2G3, Canada
| | - Camille V Huang
- Division of Analytical and Environmental Toxicology, Department of Laboratory Medicine and Pathology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, T6G 2G3, Canada
| | - Yiping Wu
- Division of Analytical and Environmental Toxicology, Department of Laboratory Medicine and Pathology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, T6G 2G3, Canada
| | - Hongquan Zhang
- Division of Analytical and Environmental Toxicology, Department of Laboratory Medicine and Pathology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, T6G 2G3, Canada
| | - Xing-Fang Li
- Division of Analytical and Environmental Toxicology, Department of Laboratory Medicine and Pathology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, T6G 2G3, Canada
| | - X Chris Le
- Division of Analytical and Environmental Toxicology, Department of Laboratory Medicine and Pathology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, T6G 2G3, Canada
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Röhr F, Uellner F, Deckert A, Anders S, Burk R, Knop M, Brugnara L, Bärnighausen T, Jahn A, McMahon S, Souares A. From disgusting and complicated to simple and brilliant: Implementation perspectives and lessons learned from users and rejectors of mail-in SARS-CoV-2 gargle tests. Front Public Health 2023; 10:1024525. [PMID: 36684995 PMCID: PMC9850099 DOI: 10.3389/fpubh.2022.1024525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Accepted: 11/17/2022] [Indexed: 01/07/2023] Open
Abstract
Background Despite the important role of testing as a measure against the COVID-19 pandemic, user perspectives on SARS-CoV-2 tests remain scarce, inhibiting an improvement of testing approaches. As the world enters the third year of the pandemic, more nuanced perspectives of testing, and opportunities to expand testing in a feasible and affordable manner merit consideration. Methods Conducted amid the second pandemic wave (late 2020-early 2021) during and after a multi-arm trial evaluating SARS-CoV-2 surveillance strategies in the federal state Baden-Württemberg, Germany, this qualitative sub-study aimed to gain a deeper understanding of how test users and test rejectors perceived mail-in SARS-CoV-2 gargle tests. We conducted 67 semi-structured in-depth interviews (mean duration: 60 min) via telephone or video call. Interviews were audio-recorded, transcribed verbatim and analyzed inductively using thematic analysis. The Consolidated Framework for Implementation Research guided the findings' presentation. Results Respondents generally described gargle sampling as simple and comfortable. However, individual perceptions of the testing method and its feasibility varied widely from disgusting and complicated to simple and brilliant. Self-sampling was appreciated for lowering infection risks during testing, but also considered more complex. Gargle-sampling increased participants' self-efficacy to sample correctly. Communication (first contact, quantity and content of information, reminders, support system) and trust (in the study, its institutional affiliation and test method) decisively influenced the intervention's acceptability. Conclusion User-driven insights on how to streamline testing include: consider communication, first impressions of tests and information as key for successful mail-in testing; pay attention to the role of mutual trust between those taking and administering tests; implement gargle self-sampling as a pleasant alternative to swab testing; offer multiple test methods to increase test up-take.
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Affiliation(s)
- Freda Röhr
- Heidelberg Institute of Global Health (HIGH), Faculty of Medicine and University Hospital, University of Heidelberg, Heidelberg, Germany
| | - Ferdinand Uellner
- Heidelberg Institute of Global Health (HIGH), Faculty of Medicine and University Hospital, University of Heidelberg, Heidelberg, Germany
| | - Andreas Deckert
- Heidelberg Institute of Global Health (HIGH), Faculty of Medicine and University Hospital, University of Heidelberg, Heidelberg, Germany
| | - Simon Anders
- Center for Molecular Biology Heidelberg (ZMBH), University of Heidelberg, Heidelberg, Germany
- Bioquant Center, University of Heidelberg, Heidelberg, Germany
| | - Robin Burk
- Center for Molecular Biology Heidelberg (ZMBH), University of Heidelberg, Heidelberg, Germany
| | - Michael Knop
- Center for Molecular Biology Heidelberg (ZMBH), University of Heidelberg, Heidelberg, Germany
- German Cancer Research Center (DKFZ)-ZMBH Alliance, Heidelberg, Germany
| | - Lucia Brugnara
- Evaplan Ltd. at the University Hospital Heidelberg, Heidelberg, Germany
| | - Till Bärnighausen
- Heidelberg Institute of Global Health (HIGH), Faculty of Medicine and University Hospital, University of Heidelberg, Heidelberg, Germany
| | - Albrecht Jahn
- Heidelberg Institute of Global Health (HIGH), Faculty of Medicine and University Hospital, University of Heidelberg, Heidelberg, Germany
| | - Shannon McMahon
- Heidelberg Institute of Global Health (HIGH), Faculty of Medicine and University Hospital, University of Heidelberg, Heidelberg, Germany
- International Health Department, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States
| | - Aurélia Souares
- Heidelberg Institute of Global Health (HIGH), Faculty of Medicine and University Hospital, University of Heidelberg, Heidelberg, Germany
- German Center for Infection Research Heidelberg Site, Heidelberg, Germany
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Qiao K, Tao X, Liu H, Zheng M, Asakawa T, Lu H. Verification of the efficiency of saline gargle sampling for detection of the Omicron variant of SARS-CoV-2, a pilot study. Biosci Trends 2022; 16:451-454. [PMID: 36504073 DOI: 10.5582/bst.2022.01498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A saline gargle (SG) has proven to be an efficient method of sampling to detect SARS-CoV-2. The aim of this pilot study was to verify the efficiency of SG sampling in detecting the Omicron variant of SARS-CoV-2. Subjects were a total of 68 patients with COVID-19 (Omicron variant), and 167 pairs of samples were collected. A conventional oropharyngeal swab (OPS) was obtained and SG sampling was performed immediately afterward; both were subjected to RT-qPCR. A subgroup analysis of symptomatic and asymptomatic patients was performed. Results revealed no significant differences in the distribution of patients and cycle threshold (CT) values between the SG and OPS in overall data and data on days 1-3, 4-7, and 8-14. The subgroup analysis revealed no significant differences between the SG and OPS results in symptomatic patients. In asymptomatic patients, the CT values for the SG were significantly lower than those for the OPS, implying that SG sampling had better sensitivity in the context of the Omicron variant. These data indicate that the SG had satisfactory efficiency (vs. the OPS). An SG is a simple and less invasive method of sampling that is suited to mass, frequent, and repeated sampling to detect SARS-CoV-2.
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Affiliation(s)
- Kun Qiao
- Department of Thoracic Surgery, National Clinical Research Center for Infectious Diseases, Third People's Hospital of Shenzhen, Shenzhen, Guangdong, China
| | - Xiaoting Tao
- Department of Thoracic Surgery, National Clinical Research Center for Infectious Diseases, Third People's Hospital of Shenzhen, Shenzhen, Guangdong, China
| | - Houming Liu
- Clinical Laboratory, National Clinical Research Center for Infectious Diseases, Third People's Hospital of Shenzhen, Shenzhen, Guangdong, China
| | - Mingbin Zheng
- Institute of Neurology, National Clinical Research Center for Infectious Diseases, Third People's Hospital of Shenzhen, Shenzhen, Guangdong, China
| | - Tetsuya Asakawa
- Institute of Neurology, National Clinical Research Center for Infectious Diseases, Third People's Hospital of Shenzhen, Shenzhen, Guangdong, China
| | - Hongzhou Lu
- Institute of Neurology, National Clinical Research Center for Infectious Diseases, Third People's Hospital of Shenzhen, Shenzhen, Guangdong, China.,Department of Infectious Diseases, National Clinical Research Center for Infectious Diseases, Third People's Hospital of Shenzhen, Shenzhen, China
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Evaluation of Non-Invasive Gargle Lavage Sampling for the Detection of SARS-CoV-2 Using rRT-PCR or Antigen Assay. Viruses 2022; 14:v14122829. [PMID: 36560833 PMCID: PMC9786102 DOI: 10.3390/v14122829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 12/09/2022] [Accepted: 12/17/2022] [Indexed: 12/24/2022] Open
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has caused considerable disruption worldwide. For efficient SARS-CoV-2 detection, new methods of rapid, non-invasive sampling are needed. This study aimed to investigate the stability of SARS-CoV-2 in a novel medium for gargle-lavage (GL) self-sampling and to compare the performance of SARS-CoV-2 detection in paired self-collected GL and clinician-obtained nasopharyngeal swab (NPS) samples. The stability study for SARS-CoV-2 preservation in a novel medium was performed over 14 days (4 °C, 24-27 °C, and 37 °C). In total, 494 paired GL and NPS samples were obtained at the University Hospital in Olomouc in April 2021. SARS-CoV-2 detection in paired samples was performed with a SARS-CoV-2 Nucleic Acid Detection Kit (Zybio, Chongqing Municipality, Chongqing, China), an Elecsys® SARS-CoV-2 Antigen assay (Roche Diagnostics, Mannheim, Germany), and a SARS-CoV-2 Antigen ELISA (EUROIMMUN, Lübeck, Germany). The stability study demonstrated excellent SARS-CoV-2 preservation in the novel medium for 14 days. SARS-CoV-2 was detected in 55.7% of NPS samples and 55.7% of GL samples using rRT-PCR, with an overall agreement of 91.9%. The positive percent agreement (PPA) of the rRT-PCR in the GL samples was 92.7%, and the negative percent agreement (NPA) was 90.9%, compared with the NPS samples. The PPA of the rRT-PCR in the NPS and GL samples was 93.2% when all positive tests were used as the reference standard. Both antigen detection assays showed poor sensitivity compared to rRT-PCR (33.2% and 36.0%). rRT-PCR SARS-CoV-2 detection in self-collected GL samples had a similar PPA and NPA to that of NPSs. GL self-sampling offers a suitable and more comfortable alternative for SARS-CoV-2 detection.
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5
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Tsang NNY, So HC, Cowling BJ, Leung GM, Ip DKM. Performance of saline and water gargling for SARS-CoV-2 reverse transcriptase PCR testing: a systematic review and meta-analysis. Eur Respir Rev 2022; 31:31/165/220014. [PMID: 36130785 DOI: 10.1183/16000617.0014-2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Accepted: 06/21/2022] [Indexed: 11/05/2022] Open
Abstract
The performance of gargling for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) reverse transcriptase (RT)-PCR testing has not been previously reviewed. This review systematically assessed the performance of saline and water gargling for SARS-CoV-2 RT-PCR testing in the settings of diagnosing and monitoring viral shedding.We included original studies comparing the performance of gargling and (oropharyngeal-)nasopharyngeal swabs for SARS-CoV-2 RT-PCR testing. Studies conducted in either suspected individuals or confirmed cases were included and analysed separately. The sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) were examined using random-effects models.Gargles achieved a high overall sensitivity (91%), specificity (97%), PPV (95%) and NPV (91%) for SARS-CoV-2 RT-PCR testing. Studies using saline gargle and water gargle have an overall sensitivity of 97% and 86%, respectively. The sensitivity values were largely maintained for saline and water gargling on stratified analysis, for both diagnosis (96% and 92%) and viral shedding monitoring (98% and 78%). A higher sensitivity was also reported by studies using sterile saline (100%), a smaller amount of gargling solution (92% versus 87%) and a longer gargling duration (95% versus 86%).Our results supported the use of gargling as a sampling approach for SARS-CoV-2 RT-PCR testing, which achieved a high sensitivity for both diagnosis and viral shedding monitoring purposes. Further investigation on the comparative performance of different gargling mediums is needed to draw a definitive conclusion.
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Affiliation(s)
- Nicole Ngai Yung Tsang
- WHO Collaborating Centre for Infectious Disease Epidemiology and Control, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Hau Chi So
- WHO Collaborating Centre for Infectious Disease Epidemiology and Control, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Benjamin J Cowling
- WHO Collaborating Centre for Infectious Disease Epidemiology and Control, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Gabriel M Leung
- WHO Collaborating Centre for Infectious Disease Epidemiology and Control, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Dennis Kai Ming Ip
- WHO Collaborating Centre for Infectious Disease Epidemiology and Control, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, China
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Utama R, Hapsari R, Puspitasari I, Sari D, Hendrianingtyas M, Nurainy N. Self-collected gargle specimen as a patient-friendly sample collection method for COVID-19 diagnosis in a population context. Sci Rep 2022; 12:3706. [PMID: 35260654 PMCID: PMC8904449 DOI: 10.1038/s41598-022-07690-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 02/21/2022] [Indexed: 12/23/2022] Open
Abstract
Scaling up SARS-CoV-2 testing and tracing continues to be plagued with the limitation of the sample collection method, which requires trained healthcare workers to perform and causes discomfort to the patients. In response, we assessed the performance and user preference of gargle specimens for qRT-PCR-based detection of SARS-CoV-2 in Indonesia. Inpatients who had recently been diagnosed with COVID-19 and outpatients who were about to perform qRT-PCR testing were asked to provide nasopharyngeal and oropharyngeal (NPOP) swabs and self-collected gargle specimens. We demonstrated that self-collected gargle specimens can be an alternative specimen to detect SARS-CoV-2 and the viral RNA remained stable for 31 days at room temperature storage. The developed method was validated for use on multiple RNA extraction kits and commercially available COVID-19 RT-PCR kits. Our developed method achieved a sensitivity of 91.38% when compared to paired NPOP swab specimens (Ct < 35), with 97.10% of patients preferring the self-collected gargle method.
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Affiliation(s)
- Revata Utama
- Nusantics, PT. Riset Nusantara Genetika, Jakarta, Indonesia
| | - Rebriarina Hapsari
- Faculty of Medicine, Universitas Diponegoro, Semarang, Indonesia.,Diponegoro National Hospital, Semarang, Indonesia
| | - Iva Puspitasari
- Faculty of Medicine, Universitas Diponegoro, Semarang, Indonesia.,Central General Hospital Dr. Kariadi, Semarang, Indonesia
| | - Desvita Sari
- Faculty of Medicine, Universitas Diponegoro, Semarang, Indonesia.,Central General Hospital Dr. Kariadi, Semarang, Indonesia
| | - Meita Hendrianingtyas
- Faculty of Medicine, Universitas Diponegoro, Semarang, Indonesia.,Diponegoro National Hospital, Semarang, Indonesia
| | - Neni Nurainy
- PT. Bio Farma, Development of Translational Biopharmaceutical Products Division, Bandung, Indonesia.
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7
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Costa MM, Martin H, Estellon B, Dupé FX, Saby F, Benoit N, Tissot-Dupont H, Million M, Pradines B, Granjeaud S, Almeras L. Exploratory Study on Application of MALDI-TOF-MS to Detect SARS-CoV-2 Infection in Human Saliva. J Clin Med 2022; 11:295. [PMID: 35053990 PMCID: PMC8781148 DOI: 10.3390/jcm11020295] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 12/16/2021] [Accepted: 12/31/2021] [Indexed: 12/24/2022] Open
Abstract
SARS-CoV-2 has caused a large outbreak since its emergence in December 2019. COVID-19 diagnosis became a priority so as to isolate and treat infected individuals in order to break the contamination chain. Currently, the reference test for COVID-19 diagnosis is the molecular detection (RT-qPCR) of the virus from nasopharyngeal swab (NPS) samples. Although this sensitive and specific test remains the gold standard, it has several limitations, such as the invasive collection method, the relative high cost and the duration of the test. Moreover, the material shortage to perform tests due to the discrepancy between the high demand for tests and the production capacities puts additional constraints on RT-qPCR. Here, we propose a PCR-free method for diagnosing SARS-CoV-2 based on matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS) profiling and machine learning (ML) models from salivary samples. Kinetic saliva samples were collected at enrollment and ten and thirty days later (D0, D10 and D30), to assess the classification performance of the ML models compared to the molecular tests performed on NPS specimens. Spectra were generated using an optimized protocol of saliva collection and successive quality control steps were developed to ensure the reliability of spectra. A total of 360 averaged spectra were included in the study. At D0, the comparison of MS spectra from SARS-CoV-2 positive patients (n = 105) with healthy healthcare controls (n = 51) revealed nine peaks that significantly distinguished the two groups. Among the five ML models tested, support vector machine with linear kernel (SVM-LK) provided the best performance on the training dataset (accuracy = 85.2%, sensitivity = 85.1%, specificity = 85.3%, F1-Score = 85.1%). The application of the SVM-LK model on independent datasets confirmed its performances with 88.9% and 80.8% of correct classification for samples collected at D0 and D30, respectively. Conversely, at D10, the proportion of correct classification had fallen to 64.3%. The analysis of saliva samples by MALDI-TOF MS and ML appears as an interesting supplementary tool for COVID-19 diagnosis, despite the mitigated results obtained for convalescent patients (D10).
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Affiliation(s)
- Monique Melo Costa
- Unité Parasitologie et Entomologie, Département Microbiologie et Maladies Infectieuses, Institut de Recherche Biomédicale des Armées, 91220 Marseille, France; (M.M.C.); (H.M.); (F.S.); (N.B.); (B.P.)
- Aix-Marseille University, IRD, SSA, AP-HM, VITROME, 13005 Marseille, France
- IHU Méditerranée Infection, 13005 Marseille, France; (H.T.-D.); (M.M.)
| | - Hugo Martin
- Unité Parasitologie et Entomologie, Département Microbiologie et Maladies Infectieuses, Institut de Recherche Biomédicale des Armées, 91220 Marseille, France; (M.M.C.); (H.M.); (F.S.); (N.B.); (B.P.)
- Aix-Marseille University, IRD, SSA, AP-HM, VITROME, 13005 Marseille, France
- IHU Méditerranée Infection, 13005 Marseille, France; (H.T.-D.); (M.M.)
| | - Bertrand Estellon
- Laboratoire d’Informatique et Systèmes, Aix-Marseille University, CNRS, University de Toulon, 13013 Marseille, France; (B.E.); (F.-X.D.)
| | - François-Xavier Dupé
- Laboratoire d’Informatique et Systèmes, Aix-Marseille University, CNRS, University de Toulon, 13013 Marseille, France; (B.E.); (F.-X.D.)
| | - Florian Saby
- Unité Parasitologie et Entomologie, Département Microbiologie et Maladies Infectieuses, Institut de Recherche Biomédicale des Armées, 91220 Marseille, France; (M.M.C.); (H.M.); (F.S.); (N.B.); (B.P.)
- Aix-Marseille University, IRD, SSA, AP-HM, VITROME, 13005 Marseille, France
- IHU Méditerranée Infection, 13005 Marseille, France; (H.T.-D.); (M.M.)
| | - Nicolas Benoit
- Unité Parasitologie et Entomologie, Département Microbiologie et Maladies Infectieuses, Institut de Recherche Biomédicale des Armées, 91220 Marseille, France; (M.M.C.); (H.M.); (F.S.); (N.B.); (B.P.)
- Aix-Marseille University, IRD, SSA, AP-HM, VITROME, 13005 Marseille, France
- IHU Méditerranée Infection, 13005 Marseille, France; (H.T.-D.); (M.M.)
- Centre National de Référence du Paludisme, 13005 Marseille, France
| | - Hervé Tissot-Dupont
- IHU Méditerranée Infection, 13005 Marseille, France; (H.T.-D.); (M.M.)
- Aix-Marseille University, IRD, AP-HM, MEPHI, 13005 Marseille, France
| | - Matthieu Million
- IHU Méditerranée Infection, 13005 Marseille, France; (H.T.-D.); (M.M.)
- Aix-Marseille University, IRD, AP-HM, MEPHI, 13005 Marseille, France
| | - Bruno Pradines
- Unité Parasitologie et Entomologie, Département Microbiologie et Maladies Infectieuses, Institut de Recherche Biomédicale des Armées, 91220 Marseille, France; (M.M.C.); (H.M.); (F.S.); (N.B.); (B.P.)
- Aix-Marseille University, IRD, SSA, AP-HM, VITROME, 13005 Marseille, France
- IHU Méditerranée Infection, 13005 Marseille, France; (H.T.-D.); (M.M.)
- Centre National de Référence du Paludisme, 13005 Marseille, France
| | - Samuel Granjeaud
- CRCM Integrative Bioinformatics Platform, Centre de Recherche en Cancérologie de Marseille, INSERM, U1068, Institut Paoli-Calmettes, CNRS, UMR7258, Aix-Marseille Université UM 105, 13009 Marseille, France;
| | - Lionel Almeras
- Unité Parasitologie et Entomologie, Département Microbiologie et Maladies Infectieuses, Institut de Recherche Biomédicale des Armées, 91220 Marseille, France; (M.M.C.); (H.M.); (F.S.); (N.B.); (B.P.)
- Aix-Marseille University, IRD, SSA, AP-HM, VITROME, 13005 Marseille, France
- IHU Méditerranée Infection, 13005 Marseille, France; (H.T.-D.); (M.M.)
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Kawade A, Dayma G, Apte A, Roy S, Gondhali A, Juvekar S, Bavdekar A. Assessment of perceived distress due to nasopharyngeal swab collection in healthy Indian infants participating in a clinical trial. PAEDIATRIC AND NEONATAL PAIN 2021; 3:170-175. [PMID: 35548556 PMCID: PMC8975197 DOI: 10.1002/pne2.12068] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 12/08/2021] [Accepted: 12/10/2021] [Indexed: 11/08/2022]
Abstract
Routinely children are exposed to various procedures as a part of clinical care and/or research participation. Public health strategies to contain current COVID‐19 pandemic demanded massive nasopharyngeal swab testing but limited data exist to confirm the extent of the pain and distress that result from this procedure. These data could help clinicians to formulate mitigation strategies, influence public health directives, and inform review boards/ethics committees to decide on risk‐benefit ratio of the procedure. Hence, an observational study to assess perceived distress was nested in a phase IV alternate and reduced dose schedule trial of the pneumococcal conjugate vaccine (PCV) in which nasopharyngeal swab (NPS) was used to collect nasopharyngeal secretions as part of the study procedure. Out of 805 infant participants enrolled in the main study, a total of 425 infants were enrolled and observed for procedural distress at 18 weeks and 10 months of age using the Face Leg Activity Cry and Consolability (FLACC) Scale. The FLACC score and duration of cry were recorded. The mean FLACC score changed substantially from preprocedural to procedure in both age groups (from 0.08 to 5.8 at 18 weeks and from 0.5 to 7.007 at 10 months. P = <.0001). The proportion of infants experiencing higher FLACC scores (7‐10) indicating severe distress increased significantly from 22% (n = 95) at 18 weeks to 61% (n = 248) at 10 months (P < .0001). The mean duration of cry was significantly increased from 23.03 seconds at 18 weeks to 52.6 seconds at 10 months (P = .00). Nasopharyngeal swab collection produced substantial distress which increased with age. Adequate training of sample collectors and supporting parent engagement during procedure could help in reducing the distress.
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Affiliation(s)
- Anand Kawade
- Vadu Rural Health ProgramKEM Hospital Research Centre Pune India
| | - Girish Dayma
- Vadu Rural Health ProgramKEM Hospital Research Centre Pune India
| | - Aditi Apte
- Vadu Rural Health ProgramKEM Hospital Research Centre Pune India
| | - Sudipto Roy
- Vadu Rural Health ProgramKEM Hospital Research Centre Pune India
| | - Arun Gondhali
- Vadu Rural Health ProgramKEM Hospital Research Centre Pune India
| | - Sanjay Juvekar
- Vadu Rural Health ProgramKEM Hospital Research Centre Pune India
| | - Ashish Bavdekar
- Vadu Rural Health ProgramKEM Hospital Research Centre Pune India
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9
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Gobeille Paré S, Bestman-Smith J, Fafard J, Doualla-Bell F, Jacob-Wagner M, Lavallée C, Charest H, Beauchemin S, Coutlée F, Dumaresq J, Busque L, St-Hilaire M, Lépine G, Boucher V, Desforges M, Goupil-Sormany I, Labbé AC. Natural spring water gargle samples as an alternative to nasopharyngeal swabs for SARS-CoV-2 detection using a laboratory-developed test. J Med Virol 2021; 94:985-993. [PMID: 34672374 PMCID: PMC8661969 DOI: 10.1002/jmv.27407] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 09/28/2021] [Accepted: 10/18/2021] [Indexed: 01/23/2023]
Abstract
The objective of this study was to validate the use of spring water gargle (SWG) as an alternative to oral and nasopharyngeal swab (ONPS) for SARS‐CoV‐2 detection with a laboratory‐developed test. Healthcare workers and adults from the general population, presenting to one of two COVID‐19 screening clinics in Montréal and Québec City, were prospectively recruited to provide a gargle sample in addition to the standard ONPS. The paired specimens were analyzed using thermal lysis followed by a laboratory‐developed nucleic acid amplification test (LD‐NAAT) to detect SARS‐CoV‐2, and comparative performance analysis was performed. An individual was considered infected if a positive result was obtained on either sample. A total of 1297 adult participants were recruited. Invalid results (n = 18) were excluded from the analysis. SARS‐CoV‐2 was detected in 144/1279 (11.3%) participants: 126 from both samples, 15 only from ONPS, and 3 only from SWG. Overall, the sensitivity was 97.9% (95% CI: 93.7–99.3) for ONPS and 89.6% (95% CI: 83.4–93.6; p = 0.005) for SWG. The mean ONPS cycle threshold (Ct) value was significantly lower for the concordant paired samples as compared to discordant ones (22.9 vs. 32.1; p < 0.001). In conclusion, using an LD‐NAAT with thermal lysis, SWG is a less sensitive sampling method than the ONPS. However, the higher acceptability of SWG might enable a higher rate of detection from a population‐based perspective. Nonetheless, in patients with a high clinical suspicion of COVID‐19, a repeated analysis with ONPS should be considered. The sensitivity of SWG using NAAT preceded by chemical extraction should be evaluated. Using a laboratory‐developed NAAT preceded by thermal lysis, the overall percent agreement between spring water gargle (SWG) and oral combined with nasopharyngeal swab (ONPS), sampled at the same time among 1297 participants, is excellent (98.6%). Although the SARS‐CoV‐2 NAAT from SWG is globally less sensitive than from ONPS (89.6% vs. 97.9%), the difference is markedly less in individuals symptomatic for <3 days (2.7%; p=NS) than in those whose symptoms started ≥7 days before testing (35.7%; p= 0.005).
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Affiliation(s)
- Sarah Gobeille Paré
- Département de microbiologie-infectiologie et d'immunologie, Faculté de Médecine, Université Laval, Québec, Québec, Canada
| | - Julie Bestman-Smith
- Département de microbiologie-infectiologie et d'immunologie, Faculté de Médecine, Université Laval, Québec, Québec, Canada.,Département de microbiologie et d'infectiologie du Centre hospitalier universitaire (CHU) de Québec, Québec, Québec, Canada
| | - Judith Fafard
- Laboratoire de santé publique du Québec, Institut national de santé publique du Québec, Sainte-Anne-de-Bellevue, Québec, Québec, Canada.,Département de microbiologie, infectiologie et Immunologie, Université de Montréal, Montréal, Québec, Canada
| | - Florence Doualla-Bell
- Laboratoire de santé publique du Québec, Institut national de santé publique du Québec, Sainte-Anne-de-Bellevue, Québec, Québec, Canada
| | - Mariève Jacob-Wagner
- Département de microbiologie et d'infectiologie du Centre hospitalier universitaire (CHU) de Québec, Québec, Québec, Canada
| | - Christian Lavallée
- Département de microbiologie, infectiologie et Immunologie, Université de Montréal, Montréal, Québec, Canada.,Département des laboratoires de biologie médicale, Grappe Optilab-CHUM, Centre hospitalier de l'Université de Montréal, Montréal, Québec, Canada.,Service de maladies infectieuses, CIUSSS de l'Est-de-l'Île-de-Montréal, Montréal, Québec, Canada
| | - Hugues Charest
- Laboratoire de santé publique du Québec, Institut national de santé publique du Québec, Sainte-Anne-de-Bellevue, Québec, Québec, Canada.,Département de microbiologie, infectiologie et Immunologie, Université de Montréal, Montréal, Québec, Canada
| | - Stéphanie Beauchemin
- Département des laboratoires de biologie médicale, Grappe Optilab-CHUM, Centre hospitalier de l'Université de Montréal, Montréal, Québec, Canada
| | - François Coutlée
- Département de microbiologie, infectiologie et Immunologie, Université de Montréal, Montréal, Québec, Canada.,Département des laboratoires de biologie médicale, Grappe Optilab-CHUM, Centre hospitalier de l'Université de Montréal, Montréal, Québec, Canada
| | - Jeannot Dumaresq
- Département de microbiologie-infectiologie et d'immunologie, Faculté de Médecine, Université Laval, Québec, Québec, Canada.,Département de microbiologie et d'Infectiologie, CISSS de Chaudière-Appalaches, Lévis, Québec, Canada
| | - Lambert Busque
- Département des laboratoires de biologie médicale, Grappe Optilab-CHUM, Centre hospitalier de l'Université de Montréal, Montréal, Québec, Canada
| | - Manon St-Hilaire
- Département des laboratoires de biologie médicale, Grappe Optilab-CHUM, Centre hospitalier de l'Université de Montréal, Montréal, Québec, Canada
| | - Guylaine Lépine
- Département des laboratoires de biologie médicale, Grappe Optilab-CHUM, Centre hospitalier de l'Université de Montréal, Montréal, Québec, Canada
| | - Valérie Boucher
- Centre de recherche du CHU de Québec-Université Laval, Québec, Canada
| | - Marc Desforges
- Département de microbiologie, infectiologie et Immunologie, Université de Montréal, Montréal, Québec, Canada.,Département clinique de médecine de laboratoire, CHU Ste-Justine, Montréal, Québec, Canada
| | - Isabelle Goupil-Sormany
- Direction de la vigie sanitaire, Ministère de la Santé et des Services sociaux du Québec, Québec, Québec, Canada
| | - Annie-Claude Labbé
- Département de microbiologie, infectiologie et Immunologie, Université de Montréal, Montréal, Québec, Canada.,Département des laboratoires de biologie médicale, Grappe Optilab-CHUM, Centre hospitalier de l'Université de Montréal, Montréal, Québec, Canada.,Service de maladies infectieuses, CIUSSS de l'Est-de-l'Île-de-Montréal, Montréal, Québec, Canada
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10
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Borkakoty B, Jakharia A, Bali NK, Sarmah MD, Hazarika R, Baruah G, Bhattacharya C, Biswas D. A preliminary evaluation of normal saline as an alternative to viral transport medium for COVID-19 diagnosis. Indian J Med Res 2021; 153:684-688. [PMID: 34643568 PMCID: PMC8555596 DOI: 10.4103/ijmr.ijmr_4346_20] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Affiliation(s)
- Biswajyoti Borkakoty
- Regional VRDL, Indian Council of Medical Research-Regional Medical Research Centre, Dibrugarh 786 010, Assam, India
| | - Aniruddha Jakharia
- Regional VRDL, Indian Council of Medical Research-Regional Medical Research Centre, Dibrugarh 786 010, Assam, India
| | - Nargis K Bali
- Department of Clinical Microbiology, Sher-I Kashmir Institute of Medical Sciences, Srinagar 190 002, Jammu & Kashmir, India
| | - Mandakini Das Sarmah
- Regional VRDL, Indian Council of Medical Research-Regional Medical Research Centre, Dibrugarh 786 010, Assam, India
| | - Rahul Hazarika
- Regional VRDL, Indian Council of Medical Research-Regional Medical Research Centre, Dibrugarh 786 010, Assam, India
| | - Gautam Baruah
- Regional VRDL, Indian Council of Medical Research-Regional Medical Research Centre, Dibrugarh 786 010, Assam, India
| | - Chandrakanta Bhattacharya
- Regional VRDL, Indian Council of Medical Research-Regional Medical Research Centre, Dibrugarh 786 010, Assam, India
| | - Dipankar Biswas
- Regional VRDL, Indian Council of Medical Research-Regional Medical Research Centre, Dibrugarh 786 010, Assam, India
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11
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Dumaresq J, Coutlée F, Dufresne PJ, Longtin J, Fafard J, Bestman-Smith J, Bergevin M, Vallières E, Desforges M, Labbé AC. Natural spring water gargle and direct RT-PCR for the diagnosis of COVID-19 (COVID-SPRING study). J Clin Virol 2021; 144:104995. [PMID: 34619381 PMCID: PMC8487097 DOI: 10.1016/j.jcv.2021.104995] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 09/13/2021] [Accepted: 09/29/2021] [Indexed: 11/28/2022]
Abstract
Background Nasopharyngeal swab has long been considered the specimen of choice for the diagnosis of respiratory viral infections, including SARS-CoV-2 infection, but it suffers from several drawbacks: its discomfort limits screening acceptability, and it is vulnerable to shortages in both specialized materials and trained healthcare workers in the context of a pandemic. Methods We prospectively compared natural spring water gargle to combined oro-nasopharyngeal swab (ONPS) for the diagnosis of coronavirus disease 2019 (COVID-19) in paired clinical specimens (1005 ONPS and 1005 gargles) collected from 987 unique early symptomatic as well as asymptomatic individuals from the community. Results Using a direct RT-PCR method with the Allplex™ 2019-nCoV Assay (Seegene), the clinical sensitivity of the gargle was 95.3% (95% confidence interval [CI], 90.2 – 98.3%), similar to the sensitivity of the ONPS (93.8%; 95% CI, 88.2 – 97.3%), despite significantly lower viral RNA concentration in gargles, as reflected by higher cycle threshold values. No single specimen type detected all COVID-19 cases. SARS-CoV-2 RNA was stable in gargles at room temperature for at least 7 days. Conclusion The simplicity of this sampling method coupled with the accessibility of spring water are clear advantages in a pandemic situation where testing frequency, turnaround time and shortage of consumables and trained staff are critical elements.
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Affiliation(s)
- Jeannot Dumaresq
- Département de Microbiologie et d'Infectiologie, CISSS de Chaudière-Appalaches, Lévis, Québec, Canada; Département de microbiologie-infectiologie et d'immunologie, Faculté de Médecine, Université Laval, Québec, Québec, Canada.
| | - François Coutlée
- Service de Biologie moléculaire, Département des laboratoires de biologie médicale et Service d'infectiologie, Département de Médecine, Centre hospitalier de l'Université de Montréal, Canada; Département de Microbiologie, infectiologie et Immunologie, Université de Montréal, Montréal, H2 × 3E4, Canada
| | - Philippe J Dufresne
- Laboratoire de santé publique du Québec, Institut national de santé publique du Québec, Sainte-Anne-de-Bellevue, Qc, Canada
| | - Jean Longtin
- Département de microbiologie-infectiologie et d'immunologie, Faculté de Médecine, Université Laval, Québec, Québec, Canada; Département de microbiologie et d'infectiologie du centre hospitalier universitaire (CHU) de Québec, Québec, Canada
| | - Judith Fafard
- Département de Microbiologie, infectiologie et Immunologie, Université de Montréal, Montréal, H2 × 3E4, Canada; Laboratoire de santé publique du Québec, Institut national de santé publique du Québec, Sainte-Anne-de-Bellevue, Qc, Canada
| | - Julie Bestman-Smith
- Département de microbiologie-infectiologie et d'immunologie, Faculté de Médecine, Université Laval, Québec, Québec, Canada; Département de microbiologie et d'infectiologie du centre hospitalier universitaire (CHU) de Québec, Québec, Canada
| | - Marco Bergevin
- Département de biologie médicale Hôpital Cité-de-la-Santé, Laval, QC, H7M 3L9, Canada
| | - Emilie Vallières
- Département de Microbiologie, infectiologie et Immunologie, Université de Montréal, Montréal, H2 × 3E4, Canada; Service de microbiologie, Département clinique de médecine de laboratoire et Service de maladies infectieuses, Département de pédiatrie, CHU Sainte-Justine, Montréal, Qc, Canada
| | - Marc Desforges
- Service de microbiologie, Département clinique de médecine de laboratoire et Service de maladies infectieuses, Département de pédiatrie, CHU Sainte-Justine, Montréal, Qc, Canada
| | - Annie-Claude Labbé
- Département de Microbiologie, infectiologie et Immunologie, Université de Montréal, Montréal, H2 × 3E4, Canada; Service de maladies infectieuses, Département de Médecine, CIUSSS de l'Est-de-l'Île-de-Montreal, Montréal, Canada
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12
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Jungbauer F, Huber L, Lammert A, Ludwig S, Rotter N, Zaubitzer L, Schell A. Prevalence of subjective impairments of the sense of smell and taste in employees of retirement and nursing homes during SARS-CoV-2 pandemic. Nurs Open 2021; 9:175-180. [PMID: 34599864 PMCID: PMC8662030 DOI: 10.1002/nop2.1005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Revised: 05/29/2021] [Accepted: 07/10/2021] [Indexed: 12/14/2022] Open
Abstract
Aim To investigate the usability of querying subjective impairments of the sense of smell and taste in order to improve pre‐test probability in testing for SARS‐CoV‐2. To achieve this, exploring the prevalence of these restrictions in the COVID‐19‐negative population, as well as nasal co‐symptoms. Design A cross‐sectional study was carried out as part of the secondary prophylaxis, following the STROBE guidelines of the EQUATOR network. Methods In total, 1,734 employees of retirement and nursing homes were tested for COVID‐19 and asked for subjective reduction or loss in the sense of smell and taste, furthermore about nasal co‐symptoms such as nasal obstruction and rhinorrhoea. Results All employees tested negative for COVID‐19. Subjective hyposmia and hypogeusia rarely occurred and were usually accompanied by other nasal symptoms such as nasal obstruction. Querying subjective hyposmia/anosmia or hypogeusia/ageusia appears to be a useful anamnestic instrument for the clinical assessment of the probability of SARS‐CoV‐2 infection.
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Affiliation(s)
- Frederic Jungbauer
- Department of Otorhinolaryngology, Head- and Neck-Surgery, University Medical Centre Mannheim, Mannheim, Germany
| | - Lena Huber
- Department of Otorhinolaryngology, Head- and Neck-Surgery, University Medical Centre Mannheim, Mannheim, Germany
| | - Anne Lammert
- Department of Otorhinolaryngology, Head- and Neck-Surgery, University Medical Centre Mannheim, Mannheim, Germany
| | - Sonja Ludwig
- Department of Otorhinolaryngology, Head- and Neck-Surgery, University Medical Centre Mannheim, Mannheim, Germany
| | - Nicole Rotter
- Department of Otorhinolaryngology, Head- and Neck-Surgery, University Medical Centre Mannheim, Mannheim, Germany
| | - Lena Zaubitzer
- Department of Otorhinolaryngology, Head- and Neck-Surgery, University Medical Centre Mannheim, Mannheim, Germany
| | - Angela Schell
- Department of Otorhinolaryngology, Head- and Neck-Surgery, University Medical Centre Mannheim, Mannheim, Germany
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13
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Sweeney-Reed CM, Wolff D, Hörnschemeyer S, Faßhauer H, Haase A, Schomburg D, Niggel J, Kabesch M, Apfelbacher C. Feasibility of a surveillance programme based on gargle samples and pool testing to prevent SARS-CoV-2 outbreaks in schools. Sci Rep 2021; 11:19521. [PMID: 34593887 PMCID: PMC8484445 DOI: 10.1038/s41598-021-98849-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Accepted: 09/15/2021] [Indexed: 01/12/2023] Open
Abstract
School closures have a negative impact on physical and mental well-being, and education, of children and adolescents. A surveillance programme to detect asymptomatic SARS-CoV-2 infection could allow schools to remain open, while protecting the vulnerable. We assessed the feasibility of a programme employing gargle samples and pool testing of individually extracted RNA using rRT-qPCR in a primary and a secondary school in Germany, based on programme logistics and acceptance. Twice a week, five participants per class were selected to provide samples, using an algorithm weighted by a risk-based priority score to increase likelihood of case detection. The positive response rate was 54.8% (550 of 1003 pupils). Logistics evaluation revealed the rate-limiting steps: completing the regular pre-test questionnaire and handing in the samples. Acceptance questionnaire responses indicated strong support for research into developing a surveillance programme and a positive evaluation of gargle tests. Participation was voluntary. As not all pupils participated, individual reminders could lead to participant identification. School-wide implementation of the programme for infection monitoring purposes would enable reminders to be given to all school pupils to address these steps, without compromising participant anonymity. Such a programme would provide a feasible means to monitor asymptomatic respiratory tract infection in schools.
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Affiliation(s)
- Catherine M Sweeney-Reed
- Neurocybernetics and Rehabilitation, Dept. of Neurology, Medical Faculty, Otto von Guericke University Magdeburg, Leipziger Str. 44, Magdeburg, Germany.
- Center for Behavioral Brain Sciences, Otto von Guericke University Magdeburg, Magdeburg, Germany.
| | - Doreen Wolff
- Institute of Social Medicine and Health System Research, Otto von Guericke University Magdeburg, Magdeburg, Germany
| | - Sarah Hörnschemeyer
- Institute of Social Medicine and Health System Research, Otto von Guericke University Magdeburg, Magdeburg, Germany
| | - Henriette Faßhauer
- Institute of Social Medicine and Health System Research, Otto von Guericke University Magdeburg, Magdeburg, Germany
| | - Antonia Haase
- Institute of Social Medicine and Health System Research, Otto von Guericke University Magdeburg, Magdeburg, Germany
| | - Dirk Schomburg
- Institute of Biometry und Medical Informatics (IBMI), Otto von Guericke University Magdeburg, Magdeburg, Germany
| | - Jakob Niggel
- University of Regensburg, Regensburg, Germany
- MaganaMed GmbH, Regensburg, Germany
| | - Michael Kabesch
- University Children's Hospital Regensburg (KUNO), Hospital St. Hedwig of the Order of St. John, Regensburg, Germany
- Research and Development Campus Regensburg (WECARE), Hospital St. Hedwig of the Order of St. John and University of Regensburg, Regensburg, Germany
| | - Christian Apfelbacher
- Institute of Social Medicine and Health System Research, Otto von Guericke University Magdeburg, Magdeburg, Germany
- Research and Development Campus Regensburg (WECARE), Hospital St. Hedwig of the Order of St. John and University of Regensburg, Regensburg, Germany
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Abstract
Efforts to control transmissible infectious diseases rely on the ability to screen large populations, ideally in community settings. These efforts can be limited by the requirement for invasive or logistically difficult collection of patient samples, such as blood, urine, stool, sputum, and nasopharyngeal swabs. Oral sampling is an appealing, noninvasive alternative that could greatly facilitate high-throughput sampling in community settings. Oral sampling has been described for the detection of dozens of human pathogens, including pathogens whose primary sites of infection are outside of the oral cavity, such as the respiratory pathogens Mycobacterium tuberculosis and SARS-CoV-2. Oral sampling can demonstrate active infections as well as resolving or previous infections, the latter through the detection of antibodies. Its potential applications are diverse, including improved diagnosis in special populations (e.g., children), population surveillance, and infectious disease screening. In this minireview, we address the use of oral samples for the detection of diseases that primarily manifest outside the oral cavity. Focusing on well-supported examples, we describe applications for such methods and highlight their potential advantages and limitations in medicine, public health, and research.
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Affiliation(s)
- Ethan D. Valinetz
- Department of Medicine, University of Washington, Seattle, Washington, USA
| | - Gerard A. Cangelosi
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, Washington, USA
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15
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Zander J, Scholtes S, Ottinger M, Kremer M, Kharazi A, Stadler V, Bickmann J, Zeleny C, Kuiper JWP, Hauck CR. Self-Collected Gargle Lavage Allows Reliable Detection of SARS-CoV-2 in an Outpatient Setting. Microbiol Spectr 2021; 9:e0036121. [PMID: 34259547 PMCID: PMC8552688 DOI: 10.1128/spectrum.00361-21] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Accepted: 06/21/2021] [Indexed: 12/27/2022] Open
Abstract
Current procurement of specimens for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) detection requires trained personnel and dedicated equipment. We compared standard nasopharyngeal swabs with self-collected gargle lavage fluid obtained from 80 mostly symptomatic outpatients. After RNA extraction, RT-PCR to detect SARS-CoV-2 was performed. Qualitative results obtained with the paired samples from individual outpatients were 100% congruent. Therefore, self-collected gargle lavage fluid can serve as a suitable specimen for coronavirus disease 2019 (COVID-19) testing in outpatients. IMPORTANCE The SARS-CoV-2 pandemic still strains health care systems worldwide. While COVID-19 testing is considered an essential pillar in combating this infectious disease, shortages in supplies and trained health care personnel often limit the procurement of patient samples, in particular in outpatient settings. Here, we compared the simple self-collection of gargle lavage fluid with the gold standard nasopharyngeal swab as a specimen for COVID-19 testing. By finding complete congruence of results obtained with paired samples of a sizeable patient cohort, our results strongly support the idea that the painless self-collection of gargle lavage fluid provides a suitable and uncomplicated sample for reliable SARS-CoV-2 detection.
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Affiliation(s)
- Johannes Zander
- Labor Dr. Brunner, Konstanz, Germany
- Institut für Laboratoriumsmedizin, Klinikum der Universität München, Munich, Germany
| | | | | | | | | | | | | | | | | | - Christof R. Hauck
- Lehrstuhl Zellbiologie, Universität Konstanz, Konstanz, Germany
- Konstanz Research School Chemical Biology, Universität Konstanz, Konstanz, Germany
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16
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Abstract
The gold standard for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection diagnosis is reverse transcription (RT)-PCR from a nasopharyngeal swab specimen (NPS). Its collection involves close contact between patients and health care workers, requiring a significant amount of workforce and putting them at risk of infection. We evaluated self-collection of alternative specimens and compared their sensitivity and cycle threshold (CT) values to those of NPS. We visited acute coronavirus disease 2019 (COVID-19) outpatients to collect concomitant NPS and gargle specimens and had patients self-collect gargle and either sputum or spit specimens the next morning. We included 40 patients and collected 40 concomitant NPS and gargle specimens, as well as 40 gargle, 22 spit, and 16 sputum specimens the next day (2 patients could not produce sputum). All specimens were as sensitive as NPS. Gargle specimens had a sensitivity of 0.97 (95% confidence interval [CI], 0.92 to 1.00), whether collected concomitantly with NPS or the next morning. Next-morning spit and sputum specimens showed sensitivities of 1.00 (95% CI, 1.00 to 1.00) and 0.94 (95% CI, 0.87 to 1.00]), respectively. The gargle specimens had significantly higher mean CT values of 29.89 (standard deviation [SD], 4.63; P < 0.001) and 29.25 (SD, 3.99; P < 0.001) when collected concomitantly and the next morning, respectively, compared to NPS (22.07 [SD, 4.63]). CT values obtained with spit (23.51 [SD, 4.57]; P = 0.11) and sputum (25.82 [SD, 9.21]; P = 0.28) specimens were close to those of NPS. All alternative specimen collection methods were as sensitive as NPS, but spit collection appeared more promising, with a low CT value and ease of collection. Our findings warrant further investigation. IMPORTANCE Control of the COVID-19 pandemic relies heavily on a test-trace-isolate strategy. The most commonly used specimen for diagnosis of SARS-CoV-2 infection is a nasopharyngeal swab. However, this method is quite uncomfortable for the patient, requires specific equipment (nose swabs and containers), and requires close proximity to health care workers, putting them at risk of infection. Developing alternative sampling strategies could decrease the burden for health care workers, help overcome potential shortages of equipment, and improve acceptability of testing by reducing patient discomfort.
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17
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Gupta A, Mittal A, Dhakad S, Brijwal M, Soneja M, Srigyan D, Xess A, Kumar A, Ray A, Meena VP, Garg RK, Singh K, Desai D, Chowdhury M, Chowdhury S, Sharma K, Narayan A, Krishnan GR, Naik S, Dar L, Pandey RM, Pandey S, Sinha S, Wig N. Gargle lavage & saliva: Feasible & cheaper alternatives to nasal & throat swabs for diagnosis of COVID-19. Indian J Med Res 2021; 153:665-670. [PMID: 34414924 PMCID: PMC8555589 DOI: 10.4103/ijmr.ijmr_4209_20] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Background & objectives: In the present scenario, the most common sample for diagnosis of COVID-19 by reverse transcription polymerase chain reaction (RT-PCR) is nasal and throat swab (NTS). Other sampling options such as gargle lavage have found limited application in clinical use mostly because of unavailability of an appropriate gargling liquid. This study was conducted to assess the stability of SARS-CoV-2 RNA in normal saline at 4°C that can serve as a gargling liquid as well as a transport medium. The study also looked at the agreement between NTS and gargle lavage/saliva for the detection of SARS-CoV-2. Methods: In 29 consecutive real-time RT-PCR (rRT-PCR) positive COVID-19 patients, paired NTS, gargle and saliva samples were taken. Samples were processed by rRT-PCR for the detection of SARS-CoV-2 RNA. To assess the SARS-CoV-2 RNA stability in normal saline, gargle lavage specimens were divided into two aliquots; one subset of the specimen was run within 4-6 h along with the routine samples (NTS and saliva) and the other subset was stored at 4°C and processed after 24-30 h. Agreement between cycle threshold (Ct) values from both the runs was compared using Bland–Altman (BA) analysis. Results: The positivity rates of rRT-PCR in NTS, saliva and gargle lavage samples were 82.7 (24/29), 79.3 (23/29) and 86.2 per cent (25/29), respectively. BA plot showed a good agreement between the Ct values of fresh and stored gargle samples, stipulating that there were no significant differences in the approximate viral load levels between the fresh and stored gargle lavage samples (bias: E gene −0.64, N gene −0.51, ORF gene −0.19). Interpretation & conclusions: Our study results show stability of SARS-CoV-2 RNA in the gargle samples collected using normal saline up to 24-30 h. Gargle lavage and saliva specimen collection are cost-effective and acceptable methods of sampling for the detection of SARS-CoV-2 RNA by rRT-PCR. These simplified, inexpensive and acceptable methods of specimen collection would reduce the cost and workload on healthcare workers for sample collection.
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Affiliation(s)
- Ankesh Gupta
- Department of Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Ankit Mittal
- Department of Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Shivram Dhakad
- Department of Microbiology, All India Institute of Medical Sciences, New Delhi, India
| | - Megha Brijwal
- Department of Microbiology, All India Institute of Medical Sciences, New Delhi, India
| | - Manish Soneja
- Department of Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Deepankar Srigyan
- Department of Microbiology, All India Institute of Medical Sciences, New Delhi, India
| | - Ashit Xess
- Department of Microbiology, All India Institute of Medical Sciences, New Delhi, India
| | - Arvind Kumar
- Department of Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Animesh Ray
- Department of Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Ved Prakash Meena
- Department of Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Rohit Kumar Garg
- Department of Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Komal Singh
- Department of Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Devashish Desai
- Department of Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Mohit Chowdhury
- Department of Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Souradeep Chowdhury
- Department of Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Kunal Sharma
- Department of Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Ananthu Narayan
- Department of Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - G Rahul Krishnan
- Department of Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Shivdas Naik
- Department of Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Lalit Dar
- Department of Microbiology, All India Institute of Medical Sciences, New Delhi, India
| | - Ravindra Mohan Pandey
- Department of Biostatistics, All India Institute of Medical Sciences, New Delhi, India
| | - Shivam Pandey
- Department of Biostatistics, All India Institute of Medical Sciences, New Delhi, India
| | - Sanjeev Sinha
- Department of Medicine, All India Institute of Medical Sciences, New Delhi, India
| | - Naveet Wig
- Department of Medicine, All India Institute of Medical Sciences, New Delhi, India
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18
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RNA-Protein Interaction Analysis of SARS-CoV-2 5' and 3' Untranslated Regions Reveals a Role of Lysosome-Associated Membrane Protein-2a during Viral Infection. mSystems 2021; 6:e0064321. [PMID: 34254825 PMCID: PMC8407388 DOI: 10.1128/msystems.00643-21] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a positive-strand RNA virus. The viral genome is capped at the 5′ end, followed by an untranslated region (UTR). There is a poly(A) tail at the 3′ end, preceded by a UTR. The self-interaction between the RNA regulatory elements present within the 5′ and 3′ UTRs and their interaction with host/virus-encoded proteins mediate the function of the 5′ and 3′ UTRs. Using an RNA-protein interaction detection (RaPID) assay coupled to liquid chromatography with tandem mass spectrometry, we identified host interaction partners of SARS-CoV-2 5′ and 3′ UTRs and generated an RNA-protein interaction network. By combining these data with the previously known protein-protein interaction data proposed to be involved in virus replication, we generated the RNA-protein-protein interaction (RPPI) network, likely to be essential for controlling SARS-CoV-2 replication. Notably, bioinformatics analysis of the RPPI network revealed the enrichment of factors involved in translation initiation and RNA metabolism. Lysosome-associated membrane protein-2a (Lamp2a), the receptor for chaperone-mediated autophagy, is one of the host proteins that interact with the 5′ UTR. Further studies showed that the Lamp2 level is upregulated in SARS-CoV-2-infected cells and that the absence of the Lamp2a isoform enhanced the viral RNA level whereas its overexpression significantly reduced the viral RNA level. Lamp2a and viral RNA colocalize in the infected cells, and there is an increased autophagic flux in infected cells, although there is no change in the formation of autophagolysosomes. In summary, our study provides a useful resource of SARS-CoV-2 5′ and 3′ UTR binding proteins and reveals the role of Lamp2a protein during SARS-CoV-2 infection. IMPORTANCE Replication of a positive-strand RNA virus involves an RNA-protein complex consisting of viral genomic RNA, host RNA(s), virus-encoded proteins, and host proteins. Dissecting out individual components of the replication complex will help decode the mechanism of viral replication. 5′ and 3′ UTRs in positive-strand RNA viruses play essential regulatory roles in virus replication. Here, we identified the host proteins that associate with the UTRs of SARS-CoV-2, combined those data with the previously known protein-protein interaction data (expected to be involved in virus replication), and generated the RNA-protein-protein interaction (RPPI) network. Analysis of the RPPI network revealed the enrichment of factors involved in translation initiation and RNA metabolism, which are important for virus replication. Analysis of one of the interaction partners of the 5′-UTR (Lamp2a) demonstrated its role in reducing the viral RNA level in SARS-CoV-2-infected cells. Collectively, our study provides a resource of SARS-CoV-2 UTR-binding proteins and identifies an important role for host Lamp2a protein during viral infection.
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19
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Lee RA, Herigon JC, Benedetti A, Pollock NR, Denkinger CM. Performance of Saliva, Oropharyngeal Swabs, and Nasal Swabs for SARS-CoV-2 Molecular Detection: a Systematic Review and Meta-analysis. J Clin Microbiol 2021; 59:JCM.02881-20. [PMID: 33504593 DOI: 10.1101/2020.11.12.20230748] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/23/2023] Open
Abstract
Nasopharyngeal (NP) swabs are considered the highest-yield sample for diagnostic testing for respiratory viruses, including SARS-CoV-2. The need to increase capacity for SARS-CoV-2 testing in a variety of settings, combined with shortages of sample collection supplies, have motivated a search for alternative sample types with high sensitivity. We systematically reviewed the literature to understand the performance of alternative sample types compared to NP swabs. We systematically searched PubMed, Google Scholar, medRxiv, and bioRxiv (last retrieval 1 October 2020) for comparative studies of alternative specimen types (saliva, oropharyngeal [OP], and nasal [NS] swabs) versus NP swabs for SARS-CoV-2 diagnosis using nucleic acid amplification testing (NAAT). A logistic-normal random-effects meta-analysis was performed to calculate % positive alternative-specimen, % positive NP, and % dual positives overall and in subgroups. The QUADAS 2 tool was used to assess bias. From 1,253 unique citations, we identified 25 saliva, 11 NS, 6 OP, and 4 OP/NS studies meeting inclusion criteria. Three specimen types captured lower % positives (NS [82%, 95% CI: 73 to 90%], OP [84%, 95% CI: 57 to 100%], and saliva [88%, 95% CI: 81 to 93%]) than NP swabs, while combined OP/NS matched NP performance (97%, 95% CI: 90 to 100%). Absence of RNA extraction (saliva) and utilization of a more sensitive NAAT (NS) substantially decreased alternative-specimen yield of positive samples. NP swabs remain the gold standard for diagnosis of SARS-CoV-2, although alternative specimens are promising. Much remains unknown about the impact of variations in specimen collection, processing protocols, and population (pediatric versus adult, late versus early in disease course), such that head-to head studies of sampling strategies are urgently needed.
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Affiliation(s)
- Rose A Lee
- Division of Infectious Diseases, Department of Pediatrics, Boston Children's Hospital, Boston, Massachusetts, USA
- Division of Infectious Diseases, Department of Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA
| | - Joshua C Herigon
- Division of Infectious Diseases, Department of Pediatrics, Boston Children's Hospital, Boston, Massachusetts, USA
| | - Andrea Benedetti
- Department of Medicine and of Epidemiology, Biostatistics & Occupational Health, McGill University, Montreal, Quebec, Canada
| | - Nira R Pollock
- Division of Infectious Diseases, Department of Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA
- Department of Laboratory Medicine, Boston Children's Hospital, Boston, Massachusetts, USA
| | - Claudia M Denkinger
- Division of Clinical Tropical Medicine, Center of Infectious Diseases, Heidelberg University Hospital, Heidelberg, Germany
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20
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Lee RA, Herigon JC, Benedetti A, Pollock NR, Denkinger CM. Performance of Saliva, Oropharyngeal Swabs, and Nasal Swabs for SARS-CoV-2 Molecular Detection: a Systematic Review and Meta-analysis. J Clin Microbiol 2021; 59:e02881-20. [PMID: 33504593 PMCID: PMC8091856 DOI: 10.1128/jcm.02881-20] [Citation(s) in RCA: 193] [Impact Index Per Article: 64.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Nasopharyngeal (NP) swabs are considered the highest-yield sample for diagnostic testing for respiratory viruses, including SARS-CoV-2. The need to increase capacity for SARS-CoV-2 testing in a variety of settings, combined with shortages of sample collection supplies, have motivated a search for alternative sample types with high sensitivity. We systematically reviewed the literature to understand the performance of alternative sample types compared to NP swabs. We systematically searched PubMed, Google Scholar, medRxiv, and bioRxiv (last retrieval 1 October 2020) for comparative studies of alternative specimen types (saliva, oropharyngeal [OP], and nasal [NS] swabs) versus NP swabs for SARS-CoV-2 diagnosis using nucleic acid amplification testing (NAAT). A logistic-normal random-effects meta-analysis was performed to calculate % positive alternative-specimen, % positive NP, and % dual positives overall and in subgroups. The QUADAS 2 tool was used to assess bias. From 1,253 unique citations, we identified 25 saliva, 11 NS, 6 OP, and 4 OP/NS studies meeting inclusion criteria. Three specimen types captured lower % positives (NS [82%, 95% CI: 73 to 90%], OP [84%, 95% CI: 57 to 100%], and saliva [88%, 95% CI: 81 to 93%]) than NP swabs, while combined OP/NS matched NP performance (97%, 95% CI: 90 to 100%). Absence of RNA extraction (saliva) and utilization of a more sensitive NAAT (NS) substantially decreased alternative-specimen yield of positive samples. NP swabs remain the gold standard for diagnosis of SARS-CoV-2, although alternative specimens are promising. Much remains unknown about the impact of variations in specimen collection, processing protocols, and population (pediatric versus adult, late versus early in disease course), such that head-to head studies of sampling strategies are urgently needed.
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Affiliation(s)
- Rose A Lee
- Division of Infectious Diseases, Department of Pediatrics, Boston Children's Hospital, Boston, Massachusetts, USA
- Division of Infectious Diseases, Department of Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA
| | - Joshua C Herigon
- Division of Infectious Diseases, Department of Pediatrics, Boston Children's Hospital, Boston, Massachusetts, USA
| | - Andrea Benedetti
- Department of Medicine and of Epidemiology, Biostatistics & Occupational Health, McGill University, Montreal, Quebec, Canada
| | - Nira R Pollock
- Division of Infectious Diseases, Department of Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA
- Department of Laboratory Medicine, Boston Children's Hospital, Boston, Massachusetts, USA
| | - Claudia M Denkinger
- Division of Clinical Tropical Medicine, Center of Infectious Diseases, Heidelberg University Hospital, Heidelberg, Germany
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21
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Matsuda EM, de Campos IB, de Oliveira IP, Colpas DR, Carmo AMDS, Brígido LFDM. Field evaluation of COVID-19 antigen tests versus RNA based detection: Potential lower sensitivity compensated by immediate results, technical simplicity, and low cost. J Med Virol 2021; 93:4405-4410. [PMID: 33788270 PMCID: PMC8250877 DOI: 10.1002/jmv.26985] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Accepted: 02/24/2021] [Indexed: 01/09/2023]
Abstract
One year into the coronavirus disease 2019 (COVID‐19) pandemic, diagnostic strategies, although central for contact tracing and other preventive measures, are still limited. To meet the global demand, lower cost and faster antigen tests for severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2) detection are a convenient alternative to the gold standard reverse transcription‐polymerase chain reaction (RT‐PCR) assay. We tested laboratory‐based RT‐PCR RNA detection and two rapid antigen detection (RAD) tests, based on the immunochromatography test for nucleocapsid protein of SARS‐CoV‐2 (COVID‐19 Ag ECO Test, ECO Diagnóstica, and Panbio COVID‐19 Ag Rapid Test Abbott). Paired collection and testing were done in a small prospective open study in three clinical services in São Paulo, constituted of mostly symptomatic volunteers at collection (97%, 109/112) for a median of 4 days (interquartile range: 3–6), ranging from 1 to 30. Among the 108 paired RT‐PCR/RAD tests, results were concordant in 96.4% (101/108). The test's performance was comparable, with an overall sensitivity of 87% and a specificity of 96%. These observations add to other data that suggest that antigen tests may provide reasonable sensitivity and specificity and deserve a role to improve testing strategies, especially in resource‐limited settings. Testing and isolating individuals transmitting SARS‐CoV‐2, generally with high viral load, is crucial to pandemic control. We documented comparable performance (96%) of two rapid test to standard RT‐qPCR. Lower cost and immediate results of rapid antigen tests may allow innovative containment measures or, at least, complement current testing limitations, specially in resource limited setting.
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Affiliation(s)
- Elaine Monteiro Matsuda
- Infectious Diseases Outpatient Clinic, Santo André Health Secretary, Santo André, São Paulo, Brazil
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22
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Self-Collected Saline Gargle Samples as an Alternative to Health Care Worker-Collected Nasopharyngeal Swabs for COVID-19 Diagnosis in Outpatients. J Clin Microbiol 2021; 59:JCM.02427-20. [PMID: 33514627 PMCID: PMC8092743 DOI: 10.1128/jcm.02427-20] [Citation(s) in RCA: 66] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Accepted: 01/06/2021] [Indexed: 01/07/2023] Open
Abstract
We assessed the performance, stability, and user acceptability of swab-independent self-collected saliva and saline mouth rinse/gargle sample types for the molecular detection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in adults and school-aged children. Outpatients who had recently been diagnosed with COVID-19 or were presenting with suspected COVID-19 were asked to have a nasopharyngeal (NP) swab collected and provide at least one self-collected sample type. We assessed the performance, stability, and user acceptability of swab-independent self-collected saliva and saline mouth rinse/gargle sample types for the molecular detection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in adults and school-aged children. Outpatients who had recently been diagnosed with COVID-19 or were presenting with suspected COVID-19 were asked to have a nasopharyngeal (NP) swab collected and provide at least one self-collected sample type. Participants were also asked about sample acceptability using a five-point Likert scale. For those previously diagnosed with COVID-19, all samples underwent real-time PCR testing using a lab-developed assay, and the majority were also tested using an FDA-authorized assay. For those presenting with suspected COVID-19, only those with a positive nasopharyngeal swab sample went on to have other samples tested. Saline mouth rinse/gargle and saliva samples were tested daily at time zero, day 1, and day 2 to assess nucleic acid stability at room temperature. Fifty participants (aged 4 to 71 years) were included; of these, 40 had at least one positive sample and were included in the primary sample yield analysis. Saline mouth rinse/gargle samples had a sensitivity of 98% (39/40), while saliva samples had a sensitivity of 79% (26/33). Both saline mouth rinse/gargle and saliva samples showed stable viral RNA detection after 2 days of room temperature storage. Mouth rinse/gargle samples had the highest (mean, 4.9) and health care worker (HCW)-collected NP swabs had the lowest acceptability scores (mean, 3.1). In conclusion, saline mouth rinse/gargle samples demonstrated higher combined user acceptability ratings and analytical performance than saliva and HCW-collected NP swabs. This sample type is a promising swab-independent option, particularly for outpatient self-collection in adults and school-aged children.
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23
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Oishee MJ, Ali T, Jahan N, Khandker SS, Haq MA, Khondoker MU, Sil BK, Lugova H, Krishnapillai A, Abubakar AR, Kumar S, Haque M, Jamiruddin MR, Adnan N. COVID-19 Pandemic: Review of Contemporary and Forthcoming Detection Tools. Infect Drug Resist 2021; 14:1049-1082. [PMID: 33762831 PMCID: PMC7982560 DOI: 10.2147/idr.s289629] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Accepted: 01/30/2021] [Indexed: 01/10/2023] Open
Abstract
Recent severe acute respiratory syndrome 2 (SARS-CoV-2) known as COVID-19, presents a deadly challenge to the global healthcare system of developing and developed countries, exposing the limitations of health facilities preparedness for emerging infectious disease pandemic. Opportune detection, confinement, and early treatment of infected cases present the first step in combating COVID-19. In this review, we elaborate on various COVID-19 diagnostic tools that are available or under investigation. Consequently, cell culture, followed by an indirect fluorescent antibody, is one of the most accurate methods for detecting SARS-CoV-2 infection. However, restrictions imposed by the regulatory authorities prevented its general use and implementation. Diagnosis via radiologic imaging and reverse transcriptase PCR assay is frequently employed, considered as standard procedures, whereas isothermal amplification methods are currently on the verge of clinical introduction. Notably, techniques such as CRISPR-Cas and microfluidics have added new dimensions to the SARS-CoV-2 diagnosis. Furthermore, commonly used immunoassays such as enzyme-linked immunosorbent assay (ELISA), lateral flow immunoassay (LFIA), neutralization assay, and the chemiluminescent assay can also be used for early detection and surveillance of SARS-CoV-2 infection. Finally, advancement in the next generation sequencing (NGS) and metagenomic analysis are smoothing the viral detection further in this global challenge.
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Affiliation(s)
| | - Tamanna Ali
- Gonoshasthaya-RNA Molecular Diagnostic and Research Center, Dhaka, Bangladesh
| | - Nowshin Jahan
- Gonoshasthaya-RNA Molecular Diagnostic and Research Center, Dhaka, Bangladesh
| | | | - Md Ahsanul Haq
- Gonoshasthaya-RNA Molecular Diagnostic and Research Center, Dhaka, Bangladesh
| | | | | | - Halyna Lugova
- Faculty of Medicine and Defence Health, National Defence University of Malaysia, Kuala Lumpur, Malaysia
| | - Ambigga Krishnapillai
- Faculty of Medicine and Defence Health, National Defence University of Malaysia, Kuala Lumpur, Malaysia
| | - Abdullahi Rabiu Abubakar
- Department of Pharmacology and Therapeutics, Faculty of Pharmaceutical Sciences, Bayero University, Kano, 700233, Kano, Nigeria
| | - Santosh Kumar
- Department of Periodontology and Implantology, Karnavati University, Gandhinagar, 382422, India
| | - Mainul Haque
- The Unit of Pharmacology, Faculty of Medicine and Defence Health Universiti Pertahanan, Nasional Malaysia (National Defence University of Malaysia), Kuala Lumpur, Malaysia
| | | | - Nihad Adnan
- Department of Microbiology, Jahangirnagar University, Dhaka, 1342, Bangladesh
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24
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Majumdar S, Verma R, Saha A, Bhattacharyya P, Maji P, Surjit M, Kundu M, Basu J, Saha S. Perspectives About Modulating Host Immune System in Targeting SARS-CoV-2 in India. Front Genet 2021; 12:637362. [PMID: 33664772 PMCID: PMC7921795 DOI: 10.3389/fgene.2021.637362] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 01/19/2021] [Indexed: 12/16/2022] Open
Abstract
Severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2), the causative agent of coronavirus induced disease-2019 (COVID-19), is a type of common cold virus responsible for a global pandemic which requires immediate measures for its containment. India has the world's largest population aged between 10 and 40 years. At the same time, India has a large number of individuals with diabetes, hypertension and kidney diseases, who are at a high risk of developing COVID-19. A vaccine against the SARS-CoV-2, may offer immediate protection from the causative agent of COVID-19, however, the protective memory may be short-lived. Even if vaccination is broadly successful in the world, India has a large and diverse population with over one-third being below the poverty line. Therefore, the success of a vaccine, even when one becomes available, is uncertain, making it necessary to focus on alternate approaches of tackling the disease. In this review, we discuss the differences in COVID-19 death/infection ratio between urban and rural India; and the probable role of the immune system, co-morbidities and associated nutritional status in dictating the death rate of COVID-19 patients in rural and urban India. Also, we focus on strategies for developing masks, vaccines, diagnostics and the role of drugs targeting host-virus protein-protein interactions in enhancing host immunity. We also discuss India's strengths including the resources of medicinal plants, good food habits and the role of information technology in combating COVID-19. We focus on the Government of India's measures and strategies for creating awareness in the containment of COVID-19 infection across the country.
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Affiliation(s)
| | - Rohit Verma
- Virology Laboratory, Vaccine and Infectious Disease Research Centre, Translational Health Science and Technology Institute, NCR Biotech Science Cluster, Faridabad, India
| | - Avishek Saha
- Ubiquitous Analytical Techniques, CSIR-Central Scientific Instruments Organisation, Chandigarh, India
| | | | - Pradipta Maji
- Biomedical Imaging and Bioinformatics Lab, Machine Intelligence Unit, Indian Statistical Institute, Kolkata, India
| | - Milan Surjit
- Virology Laboratory, Vaccine and Infectious Disease Research Centre, Translational Health Science and Technology Institute, NCR Biotech Science Cluster, Faridabad, India
| | | | - Joyoti Basu
- Department of Chemistry, Bose Institute, Kolkata, India
| | - Sudipto Saha
- Division of Bioinformatics, Bose Institute, Kolkata, India
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25
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Maricic T, Nickel O, Aximu-Petri A, Essel E, Gansauge M, Kanis P, Macak D, Richter J, Riesenberg S, Bokelmann L, Zeberg H, Meyer M, Borte S, Pääbo S. A direct RT-qPCR approach to test large numbers of individuals for SARS-CoV-2. PLoS One 2020; 15:e0244824. [PMID: 33382830 PMCID: PMC7774962 DOI: 10.1371/journal.pone.0244824] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Accepted: 12/16/2020] [Indexed: 01/01/2023] Open
Abstract
SARS-CoV-2 causes substantial morbidity and mortality in elderly and immunocompromised individuals, particularly in retirement homes, where transmission from asymptomatic staff and visitors may introduce the infection. Here we present a cheap and fast screening method based on direct RT-qPCR to detect SARS-CoV-2 in single or pooled gargle lavages ("mouthwashes"). This method detects individuals with large viral loads (Ct≤29) and we use it to test all staff at a nursing home daily over a period of three weeks in order to reduce the risk that the infection penetrates the facility. This or similar approaches can be implemented to protect hospitals, nursing homes and other institutions in this and future viral epidemics.
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Affiliation(s)
- Tomislav Maricic
- Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
| | - Olaf Nickel
- Department of Laboratory Medicine, Hospital St. Georg, Leipzig, Germany
| | | | - Elena Essel
- Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
| | - Marie Gansauge
- Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
| | - Philipp Kanis
- Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
| | - Dominik Macak
- Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
| | - Julia Richter
- Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
| | | | - Lukas Bokelmann
- Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
| | - Hugo Zeberg
- Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
- Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Matthias Meyer
- Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
| | - Stephan Borte
- Department of Laboratory Medicine, Hospital St. Georg, Leipzig, Germany
- ImmunoDeficiencyCenter Leipzig (IDCL) at Hospital St. Georg Leipzig, Jeffrey Modell Diagnostic and Research Center for Primary Immunodeficiency Diseases, Leipzig, Germany
- Division of Clinical Immunology, Department of Laboratory Medicine, Karolinska University Hospital Huddinge at Karolinska Institutet, Stockholm, Sweden
| | - Svante Pääbo
- Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
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