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Kaku N, Urabe T, Iida T, Yun C, Nishida Y, Onitsuka Y, Hashiguchi K, Hirose K, Tomonaga A, Izumikawa K, Mukae H, Yanagihara K. Gargle sample is an effective option in a novel fully automated molecular point-of-care test for influenza: a multicenter study. Virol J 2023; 20:41. [PMID: 36869389 PMCID: PMC9983540 DOI: 10.1186/s12985-023-01993-5] [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: 10/02/2022] [Accepted: 02/16/2023] [Indexed: 03/05/2023] Open
Abstract
BACKGROUND We conducted a multicenter study to evaluate the performance of a novel fully automated molecular point-of-care test using transcription-reverse transcription concerted reaction that can detect influenza A and B within 15 min in nasopharyngeal swabs and gargle samples (TRCsatFLU). METHODS Patients who visited or were hospitalized at eight clinics and hospitals with influenza-like illnesses between December 2019 and March 2020 participated in this study. We collected nasopharyngeal swabs from all patients and gargle samples from patients whom the physician judged fit to perform gargling. The result of TRCsatFLU was compared to a conventional reverse transcription-polymerase chain reaction (RT-PCR). If the results of TRCsatFLU and conventional RT-PCR were different, the samples were analyzed by sequencing. RESULTS We evaluated 233 nasopharyngeal swabs and 213 gargle samples from 244 patients. The average age of the patients was 39.3 ± 21.2. Of the patients, 68.9% visited a hospital within 24 h of symptom onset. The most common symptoms were fever (93.0%), fatigue (79.5%), and nasal discharge (64.8%). All patients in whom the gargle sample was not collected were children. Influenza A or B was detected in 98 and 99 patients in nasopharyngeal swabs and gargle samples using TRCsatFLU, respectively. Four and five patients in nasopharyngeal swabs and gargle samples, respectively, with different TRCsatFLU and conventional RT-PCR results. Influenza A or B was detected using sequencing in all samples with different results. Based on the combined conventional RT-PCR and sequencing results, the sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) of TRCsatFLU for influenza detection in nasopharyngeal swabs were 0.990, 1.000, 1.000, and 0.993, respectively. In the gargle samples, the sensitivity, specificity, PPV, and NPV of the TRCsatFLU for detecting influenza were 0.971, 1.000, 1.000, and 0.974, respectively. CONCLUSIONS The TRCsatFLU showed great sensitivity and specificity for the detection of influenza in nasopharyngeal swabs and gargle samples. TRIAL REGISTRATION This study was registered in the UMIN Clinical Trials Registry (reference number: UMIN000038276) on October 11, 2019. Before sample collection, written informed consent for the participation and publication of this study was obtained from all participants.
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Affiliation(s)
- Norihito Kaku
- Department of Laboratory Medicine, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki City, Nagasaki, 852-8501, Japan. .,Department of Laboratory Medicine, Nagasaki University Hospital, Nagasaki City, Nagasaki, Japan. .,Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan, 4438 BSRB, 109 Zina Pitcher Pl, Ann Arbor, MI, 48109, USA.
| | - Tomohito Urabe
- Urabe Otorhinolaryngology Clinic, Nagasaki City, Nagasaki, Japan
| | - Tetsuya Iida
- Iida Naika Syounika Clinic, Nagasaki City, Nagasaki, Japan
| | - Chyuns Yun
- Ohisama Pediatric Clinic, Nagayo-cho, Nagasaki, Japan
| | - Yoshiyuki Nishida
- Nishida Gastrointestinal Internal Medicine Clinic, Nagasaki City, Nagasaki, Japan
| | | | - Kohji Hashiguchi
- Department of Respiratory Medicine, Japanese Red Cross Nagasaki Genbaku Hospital, Nagasaki City, Nagasaki, Japan
| | | | | | - Koichi Izumikawa
- Department of Infectious Diseases, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki City, Nagasaki, Japan
| | - Hiroshi Mukae
- Department of Respiratory Medicine, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki City, Nagasaki, Japan
| | - Katsunori Yanagihara
- Department of Laboratory Medicine, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki City, Nagasaki, 852-8501, Japan.,Department of Laboratory Medicine, Nagasaki University Hospital, Nagasaki City, Nagasaki, Japan
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Kosai K, Kaku N, Horie M, Kodama H, Akamatsu N, Narita Y, Matsumoto Y, Matsushita T, Mizuta Y, Izumikawa K, Mukae H, Yanagihara K. Clinical evaluation of a fully automated and high-throughput molecular testing system for detection of influenza virus. Virol J 2022; 19:188. [PMID: 36384638 PMCID: PMC9667434 DOI: 10.1186/s12985-022-01916-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 11/03/2022] [Indexed: 11/17/2022] Open
Abstract
Introduction We investigated the performance of the cobas® 6800 system and cobas SARS-CoV-2 & Influenza A/B, a fully automated molecular testing system for influenza viruses and severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). This enabled an assay in a batch of 96 samples in approximately 3 h. Methods An assay was performed using the cobas SARS-CoV-2 & Influenza A/B on the cobas 6800 system for samples collected in four facilities between November 2019 and March 2020 in our previous study. The results were compared with those obtained using the reference methods. Results Of the 127 samples analyzed, the cobas SARS-CoV-2 & Influenza A/B detected influenza A virus in 75 samples, of which 73 were positive using the reference methods. No false negative results were observed. The overall positive and negative percent agreement for influenza A virus detection were 100.0% and 96.3%, respectively. There were no positive results for the influenza B virus or SARS-CoV-2. Conclusion The cobas 6800 system and cobas SARS-CoV-2 & Influenza A/B showed high accuracy for influenza A virus detection and can be useful for clinical laboratories, especially those that routinely assay many samples.
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Hong T, Liu X, Zhou Q, Liu Y, Guo J, Zhou W, Tan S, Cai Z. What the Microscale Systems "See" In Biological Assemblies: Cells and Viruses? Anal Chem 2021; 94:59-74. [PMID: 34812604 DOI: 10.1021/acs.analchem.1c04244] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Tingting Hong
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu 213164, China
| | - Xing Liu
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu 213164, China
| | - Qi Zhou
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu 213164, China
| | - Yilian Liu
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu 213164, China
| | - Jing Guo
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu 213164, China
| | - Wenhu Zhou
- Xiangya School of Pharmaceutical Sciences, Central South University, 172 Tongzipo Road, Changsha, Hunan 410013, China
| | - Songwen Tan
- Xiangya School of Pharmaceutical Sciences, Central South University, 172 Tongzipo Road, Changsha, Hunan 410013, China.,Jiangsu Dawning Pharmaceutical Co., Ltd., Changzhou, Jiangsu 213100, China
| | - Zhiqiang Cai
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu 213164, China.,Jiangsu Dawning Pharmaceutical Co., Ltd., Changzhou, Jiangsu 213100, China
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Kaku N, Ota K, Sasaki D, Akamatsu N, Uno N, Sakamoto K, Kosai K, Hasegawa H, Izumikawa K, Mukae H, Yanagihara K. Had COVID-19 spread in the community before the first confirmed case in Nagasaki, Japan? Microbes Infect 2021; 23:104812. [PMID: 33781868 PMCID: PMC7997852 DOI: 10.1016/j.micinf.2021.104812] [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] [Received: 02/22/2021] [Revised: 03/09/2021] [Accepted: 03/10/2021] [Indexed: 11/17/2022]
Abstract
This retrospective study evaluated stored nasopharyngeal swab samples from Japanese patients with influenza-like illness during the 2019/2020 season. We aimed to determine whether COVID-19 had spread in the community before the first confirmed case. The period of influenza season during 2019/2020 in Nagasaki was shorter than in previous influenza seasons. When the first COVID-19 case was reported in Nagasaki prefecture, the number of influenza cases were very low. No positive results for SARS-CoV-2 were detected in 182 samples that were obtained from adult outpatients. Our results revealed no large-scale spread of COVID-19 in the community before the first confirmed case.
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Affiliation(s)
- Norihito Kaku
- Department of Laboratory Medicine, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, Japan; Department of Laboratory Medicine, Nagasaki University Hospital, 1-7-1 Sakamoto, Nagasaki, Japan.
| | - Kenji Ota
- Department of Laboratory Medicine, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, Japan; Department of Laboratory Medicine, Nagasaki University Hospital, 1-7-1 Sakamoto, Nagasaki, Japan
| | - Daisuke Sasaki
- Department of Laboratory Medicine, Nagasaki University Hospital, 1-7-1 Sakamoto, Nagasaki, Japan
| | - Norihiko Akamatsu
- Department of Laboratory Medicine, Nagasaki University Hospital, 1-7-1 Sakamoto, Nagasaki, Japan
| | - Naoki Uno
- Department of Laboratory Medicine, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, Japan; Department of Laboratory Medicine, Nagasaki University Hospital, 1-7-1 Sakamoto, Nagasaki, Japan
| | - Kei Sakamoto
- Department of Laboratory Medicine, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, Japan; Department of Laboratory Medicine, Nagasaki University Hospital, 1-7-1 Sakamoto, Nagasaki, Japan
| | - Kosuke Kosai
- Department of Laboratory Medicine, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, Japan; Department of Laboratory Medicine, Nagasaki University Hospital, 1-7-1 Sakamoto, Nagasaki, Japan
| | - Hiroo Hasegawa
- Department of Laboratory Medicine, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, Japan; Department of Laboratory Medicine, Nagasaki University Hospital, 1-7-1 Sakamoto, Nagasaki, Japan
| | - Koichi Izumikawa
- Department of Infectious Diseases, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, Japan
| | - Hiroshi Mukae
- Department of Respiratory Medicine, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, Japan
| | - Katsunori Yanagihara
- Department of Laboratory Medicine, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, Japan; Department of Laboratory Medicine, Nagasaki University Hospital, 1-7-1 Sakamoto, Nagasaki, Japan
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