151
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Kamaladasa A, Gunasekara B, Jeewandara C, Jayathilaka D, Wijewickrama A, Guruge D, Wijayamuni R, Tan TK, Ogg GS, Townsend A, Malavige GN. Comparison of two assays to detect IgG antibodies to the receptor binding domain of SARS‑CoV‑2 as a surrogate marker for assessing neutralizing antibodies in COVID-19 patients. Int J Infect Dis 2021; 109:85-89. [PMID: 34161801 PMCID: PMC8214815 DOI: 10.1016/j.ijid.2021.06.031] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 05/28/2021] [Accepted: 06/16/2021] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Neutralizing antibodies (NAbs) are important for protection against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) reinfection. In this study, two assays that are correlated with NAbs were compared: the haemagglutination test (HAT) and the surrogate virus neutralization test (sVNT). METHODS The specificity of the HAT was compared with the sVNT, and the sensitivity and persistence of antibodies in patients with varying severity of illness was assessed in a cohort of 71 patients at 4-6 weeks and 13-16 weeks. The kinetics were assessed in the first, second, and third weeks in patients with varying severity of acute illness. RESULTS The specificity of the HAT was >99%, and sensitivity was similar to the sVNT. The levels of HAT were significantly and positively correlated with those of the sVNT (Spearman's r = 0.78, P < 0.0001). Patients with moderate and severe illness had higher HAT titres when compared to those with mild illness. Six of seven patients with severe illness had a titre of >1:640 during the second week of illness, whereas only five of 31 patients with a mild illness had a titre of >1:160 in the second week of illness. CONCLUSIONS Since the HAT is a simple and very cheap assay to perform, it would be ideal to use as an indicator of NAbs in resource-poor settings.
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Affiliation(s)
- Achala Kamaladasa
- AICBU, Department of Immunology and Molecular Medicine, Faculty of Medical Sciences, University of Sri Jayewardenepura, Sri Lanka
| | - Banuri Gunasekara
- AICBU, Department of Immunology and Molecular Medicine, Faculty of Medical Sciences, University of Sri Jayewardenepura, Sri Lanka
| | - Chandima Jeewandara
- AICBU, Department of Immunology and Molecular Medicine, Faculty of Medical Sciences, University of Sri Jayewardenepura, Sri Lanka
| | - Deshni Jayathilaka
- AICBU, Department of Immunology and Molecular Medicine, Faculty of Medical Sciences, University of Sri Jayewardenepura, Sri Lanka
| | | | | | | | - T K Tan
- MRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, United Kingdom
| | - Graham S Ogg
- AICBU, Department of Immunology and Molecular Medicine, Faculty of Medical Sciences, University of Sri Jayewardenepura, Sri Lanka; MRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, United Kingdom
| | - Alain Townsend
- MRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, United Kingdom
| | - Gathsaurie Neelika Malavige
- AICBU, Department of Immunology and Molecular Medicine, Faculty of Medical Sciences, University of Sri Jayewardenepura, Sri Lanka; MRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, United Kingdom.
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152
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Lew TTS, Aung KMM, Ow SY, Amrun SN, Sutarlie L, Ng LFP, Su X. Epitope-Functionalized Gold Nanoparticles for Rapid and Selective Detection of SARS-CoV-2 IgG Antibodies. ACS NANO 2021; 15:12286-12297. [PMID: 34133128 PMCID: PMC8231658 DOI: 10.1021/acsnano.1c04091] [Citation(s) in RCA: 57] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Accepted: 06/14/2021] [Indexed: 05/02/2023]
Abstract
Rapid and inexpensive immunodiagnostic assays to monitor severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) seroconversion are essential for conducting large-scale COVID-19 epidemiological surveillance and profiling humoral responses against SARS-CoV-2 infections or immunizations. Herein, a colorimetic serological assay to detect SARS-CoV-2 IgGs in patients' plasma was developed using short antigenic epitopes conjugated to gold nanoparticles (AuNPs). Four immunodominant linear B-cell epitopes, located on the spike (S) and nucleocapsid (N) proteins of SARS-CoV-2, were characterized for their IgG binding affinity and used as highly specific biological motifs on the nanoparticle to recognize target antibodies. Specific bivalent binding between SARS-CoV-2 antibodies and epitope-functionalized AuNPs trigger nanoparticle aggregation, which manifests as a distinct optical transition in the AuNPs' plasmon characteristics within 30 min of antibody introduction. Co-immobilization of two epitopes improved the assay sensitivity relative to single-epitope AuNPs with a limit of detection of 3.2 nM, commensurate with IgG levels in convalescent COVID-19-infected patients. A passivation strategy was further pursued to preserve the sensing response in human plasma medium. When tested against 35 clinical plasma samples of varying illness severity, the optimized nanosensor assay can successfully identify SARS-CoV-2 infection with 100% specificity and 83% sensitivity. As the epitopes are conserved within the circulating COVID-19 variants, the proposed platform holds great potential to serve as a cost-effective and highly specific alternative to classical immunoassays employing recombinant viral proteins. These epitope-enabled nanosensors further expand the serodiagnostic toolbox for COVID-19 epidemiological study, humoral response monitoring, or vaccine efficiency assessment.
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Affiliation(s)
- Tedrick Thomas Salim Lew
- Institute of Materials Research and
Engineering, Agency for Science, Technology and Research (A*STAR), 2
Fusionopolis Way, Singapore 138634, Singapore
| | - Khin Moh Moh Aung
- Institute of Materials Research and
Engineering, Agency for Science, Technology and Research (A*STAR), 2
Fusionopolis Way, Singapore 138634, Singapore
| | - Sian Yang Ow
- Institute of Materials Research and
Engineering, Agency for Science, Technology and Research (A*STAR), 2
Fusionopolis Way, Singapore 138634, Singapore
| | - Siti Naqiah Amrun
- A*STAR Infectious Diseases Laboratories (A*STAR ID
Laboratories), Agency for Science, Technology and Research
(A*STAR), Singapore 138648, Singapore
| | - Laura Sutarlie
- Institute of Materials Research and
Engineering, Agency for Science, Technology and Research (A*STAR), 2
Fusionopolis Way, Singapore 138634, Singapore
| | - Lisa F. P. Ng
- A*STAR Infectious Diseases Laboratories (A*STAR ID
Laboratories), Agency for Science, Technology and Research
(A*STAR), Singapore 138648, Singapore
- National Institute of Health Research, Health Protection
Research Unit in Emerging and Zoonotic Infections, University of
Liverpool, Liverpool L69 7BE, United Kingdom
- Institute of Infection, Veterinary and Ecological
Sciences, University of Liverpool, Liverpool CH64 7TE,
United Kingdom
| | - Xiaodi Su
- Institute of Materials Research and
Engineering, Agency for Science, Technology and Research (A*STAR), 2
Fusionopolis Way, Singapore 138634, Singapore
- Department of Chemistry, National
University of Singapore, Block S8, Level 3, 3 Science Drive 3, Singapore
117543, Singapore
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153
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Muecksch F, Wise H, Templeton K, Batchelor B, Squires M, McCance K, Jarvis L, Malloy K, Furrie E, Richardson C, MacGuire J, Godber I, Burns A, Mavin S, Zhang F, Schmidt F, Bieniasz P, Jenks S, Hatziioannou T. Longitudinal variation in SARS-CoV-2 antibody levels and emergence of viral variants: implications for the ability of serological assays to predict immunity. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2021:2021.07.02.21259939. [PMID: 34268524 PMCID: PMC8282113 DOI: 10.1101/2021.07.02.21259939] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND Serological assays are being deployed to monitor antibody responses in SARS-CoV-2 convalescents and vaccine recipients. There is a need to determine whether such assays can predict immunity, as antibody levels wane and viral variants emerge. METHODS We measured antibodies in a cohort of SARS-CoV-2 infected patients using several high-throughput serological tests and functional neutralization assays. The effects of time and spike protein sequence variation on the performance and predictive value of the various assays was assessed. FINDINGS Neutralizing antibody titers decreased over the first few months post-infection but stabilized thereafter, at about 30% of the level observed shortly after infection. Serological assays commonly used to measure antibodies against SARS-CoV-2 displayed a range of sensitivities that declined to varying extents over time. Quantitative measurements generated by serological assays based on the spike protein were better at predicting neutralizing antibody titers than assays based on nucleocapsid, but performance was variable and manufacturer positivity thresholds were not able to predict the presence or absence of detectable neutralizing activity. Even though there was some deterioration in correlation between serological measurements and functional neutralization activity, some assays maintained an ability to predict neutralizing titers, even against variants of concern. INTERPRETATION The ability of high throughput serological assays to predict neutralizing antibody titers is likely crucial for evaluation of immunity at the population scale. These data will facilitate the selection of the most suitable assays as surrogates of functional neutralizing activity and suggest that such measurements may have utility in clinical practice.
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Affiliation(s)
- Frauke Muecksch
- Laboratory of Retrovirology, The Rockefeller University, 1230 York Avenue, New York NY 10065
| | - Helen Wise
- Royal Infirmary of Edinburgh, NHS Lothian, 51 Little France Crescent, Edinburgh EH16 4SA
| | - Kate Templeton
- Royal Infirmary of Edinburgh, NHS Lothian, 51 Little France Crescent, Edinburgh EH16 4SA
| | - Becky Batchelor
- Western General Hospital, Crewe Road South, Edinburgh, EH4 2XU
| | - Maria Squires
- Royal Infirmary of Edinburgh, NHS Lothian, 51 Little France Crescent, Edinburgh EH16 4SA
| | - Kirsty McCance
- Royal Infirmary of Edinburgh, NHS Lothian, 51 Little France Crescent, Edinburgh EH16 4SA
| | - Lisa Jarvis
- SNBTS Microbiology Reference Laboratory, The Jack Copland Centre, 52 Research Avenue North, Heriot Watt Research Park, Edinburgh, EH14 4AP
| | - Kristen Malloy
- SNBTS Microbiology Reference Laboratory, The Jack Copland Centre, 52 Research Avenue North, Heriot Watt Research Park, Edinburgh, EH14 4AP
| | - Elizabeth Furrie
- Ninewells Hospital and Medical School, NHS Tayside, Dundee, DD1 9SY
| | | | | | - Ian Godber
- Queen Elizabeth University Hospital, Govan Road, Glasgow, G51 4TF
| | - Alana Burns
- Queen Elizabeth University Hospital, Govan Road, Glasgow, G51 4TF
| | - Sally Mavin
- Scottish Microbiology Reference Laboratory, NHS Highland, Inverness, IV2 3UJ
| | - Fengwen Zhang
- Laboratory of Retrovirology, The Rockefeller University, 1230 York Avenue, New York NY 10065
| | - Fabian Schmidt
- Laboratory of Retrovirology, The Rockefeller University, 1230 York Avenue, New York NY 10065
| | - Paul Bieniasz
- Laboratory of Retrovirology, The Rockefeller University, 1230 York Avenue, New York NY 10065
- Howard Hughes Medical Institute, The Rockefeller University, 1230 York Avenue, New York NY 10065
| | - Sara Jenks
- Royal Infirmary of Edinburgh, NHS Lothian, 51 Little France Crescent, Edinburgh EH16 4SA
| | - Theodora Hatziioannou
- Laboratory of Retrovirology, The Rockefeller University, 1230 York Avenue, New York NY 10065
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154
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Monschein T, Zrzavy T, Löbermann M, Winkelmann A, Berger T, Rommer P, Hartung HP, Zettl UK. [The corona pandemic and multiple sclerosis: vaccinations and their implications for patients-Part 1: recommendations]. DER NERVENARZT 2021; 92:1276-1282. [PMID: 34232359 PMCID: PMC8261803 DOI: 10.1007/s00115-021-01155-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Accepted: 05/10/2021] [Indexed: 12/24/2022]
Abstract
The ongoing COVID-19 pandemic is a global health crisis. New challenges are constantly emerging especially for the healthcare system, not least with the emergence of various viral mutations. Given the variety of immunomodulatory and immunosuppressive therapies for multiple sclerosis (MS) and the immense developments in vaccine production, there is a high need of information for people with MS. The aim of this article is therefore to provide an overview of MS and COVID-19 as well as to clarify the implications for patients with MS, especially regarding vaccination and to formulate appropriate recommendations.
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Affiliation(s)
- Tobias Monschein
- Universitätsklinik für Neurologie, Medizinische Universität Wien, Waehringer Guertel 18-20, 1090, Wien, Österreich.
| | - Tobias Zrzavy
- Universitätsklinik für Neurologie, Medizinische Universität Wien, Waehringer Guertel 18-20, 1090, Wien, Österreich
| | - Micha Löbermann
- Abteilung für Tropenmedizin und Infektionskrankheiten, Universitätsmedizin Rostock, Rostock, Deutschland
| | - Alexander Winkelmann
- Klinik und Poliklinik für Neurologie, Universitätsmedizin Rostock, Rostock, Deutschland
| | - Thomas Berger
- Universitätsklinik für Neurologie, Medizinische Universität Wien, Waehringer Guertel 18-20, 1090, Wien, Österreich
| | - Paulus Rommer
- Universitätsklinik für Neurologie, Medizinische Universität Wien, Waehringer Guertel 18-20, 1090, Wien, Österreich.,Klinik und Poliklinik für Neurologie, Neuroimmunologische Sektion, Universitätsmedizin Rostock, Rostock, Deutschland
| | - Hans-Peter Hartung
- Universitätsklinik für Neurologie, Medizinische Universität Wien, Waehringer Guertel 18-20, 1090, Wien, Österreich. .,Klinik für Neurologie, Universitätsklinikum Düsseldorf, Medizinische Fakultät, Heinrich-Heine-Universität, Moorenstraße 5, 40225, Düsseldorf, Deutschland.
| | - Uwe K Zettl
- Klinik und Poliklinik für Neurologie, Neuroimmunologische Sektion, Universitätsmedizin Rostock, Rostock, Deutschland
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155
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Bird PW, Sandhu K, Fletcher O, Ames B, Toovey O, Tang JWT. Retrospective SARS-CoV-2 IgG screening during the first wave (March-June 2020) of the COVID-19 pandemic in the United Kingdom. J Med Virol 2021; 93:6050-6053. [PMID: 34173993 PMCID: PMC8426847 DOI: 10.1002/jmv.27162] [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: 06/22/2021] [Accepted: 06/24/2021] [Indexed: 12/13/2022]
Abstract
During the “first wave” of the coronavirus disease 2019 (COVID‐19) pandemic in the United Kingdom (March–June 2020), the city of Leicester was particularly hard hit, resulting in reimposed lockdown measures. Although initial polymerase chain reaction testing for severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2) was attempted within the community, testing was soon abandoned due to an inability to keep up with demand by local laboratories. It is therefore feasible that undiagnosed transmission of COVID‐19 in the community by asymptomatic individuals was a real possibility. Therefore, retrospective SARS‐CoV‐2 immunoglobulin G (IgG) testing of archived sera from out‐patients visiting University Hospitals of Leicester NHS Trust service was performed to investigate the transmission of SARS‐CoV‐2 in the community. A total of 1779 sera samples were tested from samples collected between 16th March and 3rd June 2020, of which 202 (11.35%) were SARS‐CoV‐2 IgG positive. Positivity was lowest in March (2.54%) at the beginning of the pandemic before peaking in April (17.16%) before a decline in May and June (11.16% and 12.68%, respectively). This retrospective screening offers some insight into the early patterns of SARS‐CoV‐2 transmission within a sampled community population during the first wave of the COVID‐19 pandemic; supporting the argument for more community screening during high incidences of pandemics. Investigation into the transmission of SARS‐CoV‐2 through retrospectively screening community serum samples. Growing evidence that improved community testing is required to reduce the rates of SARS‐CoV‐2 tranmission in the community.
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Affiliation(s)
- Paul William Bird
- Department of Clinical Microbiology, University Hospitals of Leicester NHS Trust, Leicester Royal Infirmary, Leicester, UK
| | - Kyran Sandhu
- Department of Clinical Microbiology, University Hospitals of Leicester NHS Trust, Leicester Royal Infirmary, Leicester, UK
| | - Oliver Fletcher
- Department of Clinical Microbiology, University Hospitals of Leicester NHS Trust, Leicester Royal Infirmary, Leicester, UK
| | - Billy Ames
- Department of Clinical Microbiology, University Hospitals of Leicester NHS Trust, Leicester Royal Infirmary, Leicester, UK
| | - Oliver Toovey
- Department of Clinical Virology, University Hospitals of Leicester NHS Trust, Leicester Royal Infirmary, Leicester, UK
| | - Julian Wei-Tze Tang
- Department of Respiratory Sciences, University of Leicester, University of Leicester, UK
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156
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Morales-Núñez JJ, Muñoz-Valle JF, Meza-López C, Wang LF, Machado Sulbarán AC, Torres-Hernández PC, Bedolla-Barajas M, De la O-Gómez B, Balcázar-Félix P, Hernández-Bello J. Neutralizing Antibodies Titers and Side Effects in Response to BNT162b2 Vaccine in Healthcare Workers with and without Prior SARS-CoV-2 Infection. Vaccines (Basel) 2021; 9:742. [PMID: 34358158 PMCID: PMC8310237 DOI: 10.3390/vaccines9070742] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 07/02/2021] [Accepted: 07/03/2021] [Indexed: 12/25/2022] Open
Abstract
The main expected result of a vaccine against viruses is the ability to produce neutralizing antibodies. Currently, several vaccines against SARS-CoV-2 are being applied to prevent mortal complications, being Pfizer-BioNTech (BNT162b2) one of the first to be authorized in the USA and Mexico (11 December 2020). This study evaluated the efficacy of this vaccine on antibody production with neutralizing capacity and its side effects in healthcare workers with and without prior SARS-CoV-2 infection and in a group of unvaccinated individuals with prior COVID-19. The main findings are the production of 100% neutralizing antibodies in both groups after the second dose, well-tolerated adverse effects, the possible presence of immunosenescence, and finally, we support that a single dose of this vaccine in individuals with prior COVID-19 would be sufficient to achieve an immunization comparable to people without prior COVID-19 with a complete vaccination program (2 doses).
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Affiliation(s)
- José Javier Morales-Núñez
- Institute of Research in Biomedical Sciences, University Center of Health Sciences (CUCS), University of Guadalajara, Guadalajara 44340, Mexico;
| | - José Francisco Muñoz-Valle
- Institute of Research in Biomedical Sciences, University Center of Health Sciences (CUCS), University of Guadalajara, Guadalajara 44340, Mexico;
| | - Carlos Meza-López
- Pediatric Service, Nuevo Hospital Civil de Guadalajara “Dr. Juan I. Menchaca”, University of Guadalajara, Guadalajara 44340, Mexico;
| | - Lin-Fa Wang
- Programmed in Emerging Infectious Diseases, Duke-NUS Medical School, Singapore 169857, Singapore;
| | - Andrea Carolina Machado Sulbarán
- Institute for Research on Cancer in Childhood and Adolescence, University Center of Health Sciences (CUCS), University of Guadalajara, Guadalajara 44340, Mexico;
| | - Paola Carolina Torres-Hernández
- Immunology Laboratory, University Center of Health Sciences (CUCS), University of Guadalajara, Guadalajara 44340, Mexico; (P.C.T.-H.); (P.B.-F.)
| | - Martín Bedolla-Barajas
- Allergy and Clinical Immunology Service, Nuevo Hospital Civil de Guadalajara “Dr. Juan I. Menchaca”, University of Guadalajara, Guadalajara 44340, Mexico;
| | - Brenda De la O-Gómez
- University Center for Exact Sciences and Engineering (CUCEI), University of Guadalajara, Guadalajara 44340, Mexico;
| | - Paulina Balcázar-Félix
- Immunology Laboratory, University Center of Health Sciences (CUCS), University of Guadalajara, Guadalajara 44340, Mexico; (P.C.T.-H.); (P.B.-F.)
| | - Jorge Hernández-Bello
- Institute of Research in Biomedical Sciences, University Center of Health Sciences (CUCS), University of Guadalajara, Guadalajara 44340, Mexico;
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157
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Yadav AK, Ghosh S, Kotwal A, Kaushik S, Bobdey S, Sahu R, Kapoor S, Faujdar D, Teli PT, Anand V. Seroconversion among COVID-19 patients admitted in a dedicated COVID hospital: A longitudinal prospective study of 1000 patients. Med J Armed Forces India 2021; 77:S379-S384. [PMID: 34334907 PMCID: PMC8313071 DOI: 10.1016/j.mjafi.2021.06.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 06/07/2021] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND The immune response after SARS-CoV-2 is complex and may be affected by severity of the disease, race, etc. The present study was conducted to assess the serial antibody response among the COVID-19 patients admitted in the hospital. METHODS The study was conducted between July and October 2020 in a dedicated COVID-19 hospital. All consented patients underwent serial testing of antibodies using a rapid chromatographic immunoassay-based qualitative IgG/IgM kit every third day until their discharge or death. The data about age, sex, severity of disease, length of stay, onset of symptoms, date of molecular testing were also collected. Appropriate statistical tests were used. RESULTS The mean age of 1000 COVID-19 patients was 47.5 ± 17.9 years. Out of the total, 687 (68.7%) were males. With respect to severity, 682 (68.2%) were asymptomatic/mild, 200 (20%) were moderate and 118 (11.8%) were severe cases. The seroconversion percentage increased from 12.8% to 97.9% and 16.3% to 80.9% for IgG and IgM respectively in 21 days. The median time for seroconversion was 10 days (IQR:6-12 days) for IgG and eight days (IQR: 6-11 days) for IgM. At the time of discharge (median nine days), detectable IgG and IgM antibodies were present in 502 (52.46%) and 414 (43.26%) participants respectively. Seroconversion was associated with days after the symptoms, increasing severity of the disease and the presence of co-morbidity. CONCLUSION Seroconversion increased during the period of observation. The severe/moderate cases of COVID-19 tend to have an early seroconversion as compared to the asymptomatic/mild cases. Only half of the patients were seroconverted at discharge.
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Affiliation(s)
- Arun Kumar Yadav
- Associate Professor, Department of Community Medicine, Armed Forces Medical College, Pune, India
| | - S. Ghosh
- Col AFMS (Health), O/o DGAFMS, New Delhi, India
| | | | - S.K. Kaushik
- Professor & Head, Department of Community Medicine, Armed Forces Medical College, Pune, India
| | - Saurabh Bobdey
- Professor, Department of Community Medicine, Armed Forces Medical College, Pune, India
| | - Rajesh Sahu
- Associate Professor, Department of Community Medicine, Armed Forces Medical College, Pune, India
| | - Suraj Kapoor
- Resident, Department of Community Medicine, Armed Forces Medical College, Pune, India
| | - D.S. Faujdar
- Associate Professor, Department of Community Medicine, Armed Forces Medical College, Pune, India
| | - Prabhakar T. Teli
- Associate Professor, Department of Community Medicine, Armed Forces Medical College, Pune, India
| | - Vivek Anand
- Assistant Professor, Department of Community Medicine, Armed Forces Medical College, Pune, India
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158
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Knies A, Ladage D, Braun RJ, Kimpel J, Schneider M. Persistence of humoral response upon SARS-CoV-2 infection. Rev Med Virol 2021; 32:e2272. [PMID: 34191369 PMCID: PMC8420449 DOI: 10.1002/rmv.2272] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 06/18/2021] [Accepted: 06/21/2021] [Indexed: 01/09/2023]
Abstract
SARS‐CoV‐2 continues to leave its toll on global health and the economy. Management of the pandemic will rely heavily on the degree of adaptive immunity persistence following natural SARS‐CoV‐2 infection. Along with the progression of the pandemic, more literature on the persistence of the SARS‐CoV‐2‐specific antibody response is becoming available. Here, we summarize findings on the persistence of the humoral, including neutralizing antibody, response at three to eight months post SARS‐CoV‐2 infection in non‐pregnant adults. While the comparability of the literature is limited, findings on the detectability of immunoglobulin G class of antibodies (IgG) were most consistent and were reported in most studies to last for six to eight months. Studies investigating the response of immunoglobins M and A (IgM, IgA) were limited and reported mixed results, in particular, for IgM. The majority of studies observed neutralizing antibodies at all time points tested, which in some studies lasted up to eight months. The presence of neutralizing antibodies has been linked to protection from re‐infection, suggesting long‐term immunity to SARS‐CoV‐2. These neutralizing capacities may be challenged by emerging virus variants, but mucosal antibodies as well as memory B and T cells may optimize future immune responses. Thus, further longitudinal investigation of PCR‐confirmed seropositive individuals using sensitive assays is warranted to elucidate the nature and duration of a more long‐term humoral response.
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Affiliation(s)
- Andrea Knies
- Department of Scientific Coordination and Management, Danube Private University, Krems/Donau, Austria
| | - Dennis Ladage
- Department of Internal Medicine, Danube Private University, Krems/Donau, Austria
| | - Ralf J Braun
- Research Division for Neurodegenerative Diseases, Danube Private University, Krems/Donau, Austria
| | - Janine Kimpel
- Department of Hygiene, Microbiology and Public Health, Institute of Virology, Medical University of Innsbruck, Innsbruck, Austria
| | - Miriam Schneider
- Department of Scientific Coordination and Management, Danube Private University, Krems/Donau, Austria
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159
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Jagtap S, K R, Valloly P, Sharma R, Maurya S, Gaigore A, Ardhya C, Biligi DS, Desiraju BK, Natchu UCM, Saini DK, Roy R. Evaluation of spike protein antigens for SARS-CoV-2 serology. J Virol Methods 2021; 296:114222. [PMID: 34197839 PMCID: PMC8239204 DOI: 10.1016/j.jviromet.2021.114222] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 06/20/2021] [Accepted: 06/26/2021] [Indexed: 12/15/2022]
Abstract
BACKGROUND Spike protein domains are being used in various serology-based assays to detect prior exposure to SARS-CoV-2 virus. However, there has been limited comparison of antibody titers against various spike protein antigens among COVID-19 infected patients. METHODS We compared four spike proteins (RBD, S1, S2 and a stabilized spike trimer (ST)) representing commonly used antigens for their reactivity to human IgG antibodies using indirect ELISA in serum from COVID-19 patients and pre-2020 samples. ST ELISA was also compared against the EUROIMMUN IgG ELISA test. Further, we estimated time appropriate IgG and IgA seropositivity rates in COVID-19 patients using a panel of sera samples collected longitudinally from the day of onset of symptoms (DOS). RESULTS Among the four spike antigens tested, the ST demonstrated the highest sensitivity (86.2 %; 95 % CI: 77.8-91.7 %), while all four antigens showed high specificity to COVID-19 sera (94.7-96.8 %). 13.8 % (13/94) of the samples did not show seroconversion in any of the four antigen-based assays. In a double-blinded head-to-head comparison, ST based IgG ELISA displayed a better sensitivity (87.5 %, 95 % CI: 76.4-93.8 %) than the EUROIMMUN IgG ELISA (67.9 %, 95 % CI: 54.8-78.6 %). Further, in ST-based assays, we found 48 % and 50 % seroconversion in the first six days (from DOS) for IgG and IgA antibodies, respectively, which increased to 84 % (IgG) and 85 % (IgA) for samples collected ≥22 days from DOS. CONCLUSIONS Comparison of spike antigens demonstrates that spike trimer protein is a superior option as an ELISA antigen for COVID-19 serology.
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Affiliation(s)
- Suraj Jagtap
- Department of Chemical Engineering, Indian Institute of Science, Bangalore, 560012, India
| | - Ratnasri K
- Centre for BioSystems Science and Engineering, Indian Institute of Science, Bangalore, 560012, India
| | - Priyanka Valloly
- Department of Chemical Engineering, Indian Institute of Science, Bangalore, 560012, India
| | - Rakhi Sharma
- Department of Chemical Engineering, Indian Institute of Science, Bangalore, 560012, India
| | - Satyaghosh Maurya
- Department of Chemical Engineering, Indian Institute of Science, Bangalore, 560012, India
| | - Anushree Gaigore
- Department of Chemical Engineering, Indian Institute of Science, Bangalore, 560012, India
| | - Chitra Ardhya
- Department of Pathology, Bangalore Medical College and Research Institute, Bangalore, 560002, India
| | - Dayananda S Biligi
- Department of Pathology, Bangalore Medical College and Research Institute, Bangalore, 560002, India
| | - Bapu Koundinya Desiraju
- Translational Health Science and Technology Institute, NCR Biotech Science Cluster, Faridabad, 121001, India
| | | | - Deepak Kumar Saini
- Centre for BioSystems Science and Engineering, Indian Institute of Science, Bangalore, 560012, India; Department of Molecular Reproduction, Development and Genetics, Indian Institute of Science, Bangalore, 560012, India
| | - Rahul Roy
- Department of Chemical Engineering, Indian Institute of Science, Bangalore, 560012, India; Centre for BioSystems Science and Engineering, Indian Institute of Science, Bangalore, 560012, India.
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Ortolan A, Lorenzin M, Cosma C, Cozzi G, Padoan A, Doria A, Plebani M, Ramonda R. SARS-CoV-2 Infection in Spondyloarthritis Patients Treated With Biotechnological Drugs: A Study on Serology. Front Immunol 2021; 12:682850. [PMID: 34177927 PMCID: PMC8226267 DOI: 10.3389/fimmu.2021.682850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Accepted: 05/24/2021] [Indexed: 11/13/2022] Open
Abstract
Objective Serology could help to define the real extent of SARS-CoV-2 diffusion, especially in individuals considered at higher risk of COVID-19, such as spondyloarthritis (SpA) patients undergoing immunosuppressant. Our aim was to detect, by serology, previous SARS-CoV-2 contact in SpA, compared to health care workers (HCW), and healthy controls. Methods Sera from consecutive patients affected by SpA undergoing cytokine-targeted therapy, HCW and healthy controls from 2015 were analysed through chemiluminescent analytical system for the presence of IgG and IgM anti-SARS-CoV-2. Positive patients (IgM or IgG, or both) additionally underwent real-time Polymerase-Chain-Reaction (RT-PCR) to test for active infection. Serology was repeated at 3-months in SpA. Data across 3 groups were compared by Kruskal Wallis/Chi-square, and between 2 groups by Wilcoxon rank test/Chi-Square. P ≤ 0.05 were considered significant. Results 200 SpA, 95 HCW and 101 controls were recruited. Positive serology was found in 25(12.5%) SpA, 8(8.4%) HCW, 0(0%) controls (p=0.001). SpA patients with positive serology more frequently reported COVID-19-like symptoms than those with negative serology (20% vs. 4%, p=0.009) and 2 had COVID-19 as confirmed by RT-PCR, non severe. No HCW reported symptoms or had positive RT-PCR. In SpA patients, at 3 months, mean IgM titres decreased from 2.76 ± 2.93 to 2.38 ± 2.95 (p=0.001), while IgG titres from 0.89 ± 3.25 to 0.31 ± 0.87 (p=ns). Conclusions Serology revealed that exposure to SARS-CoV-2 in SpA patients and HCW was higher than expected based on reported symptoms. In SpA, anti-cytokine therapy could act as a protective factor for a severe disease course. However, a seroconversion was not observed at 3-months.
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Affiliation(s)
- Augusta Ortolan
- Rheumatology Unit, Department of Medicine DIMED, University of Padova, Padova, Italy
| | - Mariagrazia Lorenzin
- Rheumatology Unit, Department of Medicine DIMED, University of Padova, Padova, Italy
| | - Chiara Cosma
- Department of Laboratory Medicine, University-Hospital of Padova, Padova, Italy
| | - Giacomo Cozzi
- Rheumatology Unit, Department of Medicine DIMED, University of Padova, Padova, Italy
| | - Andrea Padoan
- Department of Laboratory Medicine, University-Hospital of Padova, Padova, Italy.,Department of Medicine DIMED, University of Padova, Padova, Italy
| | - Andrea Doria
- Rheumatology Unit, Department of Medicine DIMED, University of Padova, Padova, Italy
| | - Mario Plebani
- Department of Laboratory Medicine, University-Hospital of Padova, Padova, Italy.,Department of Medicine DIMED, University of Padova, Padova, Italy
| | - Roberta Ramonda
- Rheumatology Unit, Department of Medicine DIMED, University of Padova, Padova, Italy
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Maple PAC. Population (Antibody) Testing for COVID-19-Technical Challenges, Application and Relevance, an English Perspective. Vaccines (Basel) 2021; 9:550. [PMID: 34073985 PMCID: PMC8225097 DOI: 10.3390/vaccines9060550] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Revised: 05/17/2021] [Accepted: 05/21/2021] [Indexed: 01/08/2023] Open
Abstract
In the UK, population virus or antibody testing using virus swabs, serum samples, blood spots or oral fluids has been performed to a limited extent for several diseases including measles, mumps, rubella and hepatitis and HIV. The collection of population-based infection and immunity data is key to the monitoring of disease prevalence and assessing the effectiveness of interventions such as behavioural modifications and vaccination. In particular, the biological properties of severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) and its interaction with the human host have presented several challenges towards the development of population-based immunity testing. Measuring SARS-CoV-2 immunity requires the development of antibody assays of acceptable sensitivity and specificity which are capable of accurately detecting seroprevalence and differentiating protection from non-protective responses. Now that anti-COVID-19 vaccines are becoming available there is a pressing need to measure vaccine efficacy and the development of herd immunity. The unprecedented impact of the SARS-CoV-2 pandemic in the UK in terms of morbidity, mortality, and economic and social disruption has mobilized a national scientific effort to learn more about this virus. In this article, the challenges of testing for SARS-CoV-2 infection, particularly in relation to population-based immunity testing, will be considered and examples given of relevant national level studies.
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Affiliation(s)
- Peter A. C. Maple
- Clinical Neurology Research Group, Department of Neurology, Division of Clinical Neuroscience, University of Nottingham School of Medicine, Queen’s Medical Centre, Nottingham NG7 2UH, UK;
- Molecular (COVID) Department, UK Lighthouse Laboratory, Cheshire SK10 4TG, UK
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Maecker HT. Immune profiling of COVID-19: preliminary findings and implications for the pandemic. J Immunother Cancer 2021; 9:jitc-2021-002550. [PMID: 33963016 PMCID: PMC8108128 DOI: 10.1136/jitc-2021-002550] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/13/2021] [Indexed: 12/14/2022] Open
Abstract
SARS-CoV-2 infection can have widely diverse clinical outcomes, from asymptomatic infection to death, with many possible clinical symptoms and syndromes. It is thus essential to understand how the virus interacts with the host immune system to bring about these varied outcomes and to inform vaccine development. We now know that both antibody and T cell responses are induced in the majority of infected individuals, and that cross-reactive responses from other coronaviruses also exist in the uninfected population. Innate immune responses are a key focus of research and may influence the course of disease and the character of subsequent adaptive responses. Finally, baseline immune profiles and changes during early acute infection may be key to predicting the course of disease. Understanding all these aspects can help to create better immune monitoring tools for COVID-19, including tools for predicting disease severity or specific sequelae, perhaps even prior to infection.
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Affiliation(s)
- Holden T Maecker
- Institute for Immunity, Transplantation, and Infection, Stanford University School of Medicine, Stanford, California, USA
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163
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Development and Validation of a Multiplex Microsphere Immunoassay Using Dried Blood Spots for SARS-CoV-2 Seroprevalence: Application in First Responders in Colorado, USA. J Clin Microbiol 2021; 59:JCM.00290-21. [PMID: 33795412 PMCID: PMC8315929 DOI: 10.1128/jcm.00290-21] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 03/26/2021] [Indexed: 01/19/2023] Open
Abstract
Serological testing of large representative populations for antibodies to SARS-CoV-2 is needed to estimate seroprevalence, transmission dynamics, and the duration of antibody responses from natural infection and vaccination. In this study, a high-throughput SARS-CoV-2 multiplex microsphere immunoassay (MMIA) was developed for the receptor binding domain (RBD) and nucleocapsid (N) that was more sensitive than enzyme-linked immunosorbent assay (ELISA) (98% versus 87%). The MMIA was then applied and validated in 264 first responders in Colorado using serum and dried blood spot (DBS) eluates, compared to ELISA, and evaluated for neutralizing antibodies. Four percent (11/264) of first responders were seropositive in July to August 2020. Serum and DBS were highly correlated for anti-RBD and anti-N antibodies (R = 0.83, P < 0.0001 and R = 0.87, P < 0.0001, respectively) by MMIA. The MMIA accurately predicted SARS-CoV-2 neutralizing antibodies using DBS (R = 0.76, P = 0.037). On repeat antibody testing 3 months later, anti-RBD IgG decreased less rapidly than anti-N IgG measured by MMIA, with a median change in geometric median fluorescence intensity of 62% versus 79% (P < 0.01) for anti-RBD and anti-N IgG, respectively. This novel MMIA using DBS could be scalable for rapid and affordable SARS-CoV-2 serosurveillance in the United States and globally.
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164
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Scalable, Micro-Neutralization Assay for Assessment of SARS-CoV-2 (COVID-19) Virus-Neutralizing Antibodies in Human Clinical Samples. Viruses 2021; 13:v13050893. [PMID: 34065987 PMCID: PMC8151879 DOI: 10.3390/v13050893] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 05/05/2021] [Accepted: 05/06/2021] [Indexed: 12/15/2022] Open
Abstract
As the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic expanded, it was clear that effective testing for the presence of neutralizing antibodies in the blood of convalescent patients would be critical for development of plasma-based therapeutic approaches. To address the need for a high-quality neutralization assay against SARS-CoV-2, a previously established fluorescence reduction neutralization assay (FRNA) against Middle East respiratory syndrome coronavirus (MERS-CoV) was modified and optimized. The SARS-CoV-2 FRNA provides a quantitative assessment of a large number of infected cells through use of a high-content imaging system. Because of this approach, and the fact that it does not involve subjective interpretation, this assay is more efficient and more accurate than other neutralization assays. In addition, the ability to set robust acceptance criteria for individual plates and specific test wells provided further rigor to this assay. Such agile adaptability avails use with multiple virus variants. By February 2021, the SARS-CoV-2 FRNA had been used to screen over 5000 samples, including acute and convalescent plasma or serum samples and therapeutic antibody treatments, for SARS-CoV-2 neutralizing titers.
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Goupil R, Benlarbi M, Beaubien-Souligny W, Nadeau-Fredette AC, Chatterjee D, Goyette G, Gunaratnam L, Lamarche C, Tom A, Finzi A, Suri RS. Short-term antibody response after 1 dose of BNT162b2 vaccine in patients receiving hemodialysis. CMAJ 2021; 193:E793-E800. [PMID: 33980499 PMCID: PMC8177936 DOI: 10.1503/cmaj.210673] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/29/2021] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND: Patients receiving in-centre hemodialysis are at high risk of exposure to SARS-CoV-2 and death if infected. One dose of the BNT162b2 SARS-CoV-2 vaccine is efficacious in the general population, but responses in patients receiving hemodialysis are uncertain. METHODS: We obtained serial plasma from patients receiving hemodialysis and health care worker controls before and after vaccination with 1 dose of the BNT162b2 mRNA vaccine, as well as convalescent plasma from patients receiving hemodialysis who survived COVID-19. We measured anti–receptor binding domain (RBD) immunoglobulin G (IgG) levels and stratified groups by evidence of previous SARS-CoV-2 infection. RESULTS: Our study included 154 patients receiving hemodialysis (135 without and 19 with previous SARS-CoV-2 infection), 40 controls (20 without and 20 with previous SARS-CoV-2 infection) and convalescent plasma from 16 patients. Among those without previous SARS-CoV-2 infection, anti-RBD IgG was undetectable at 4 weeks in 75 of 131 (57%, 95% confidence interval [CI] 47% to 65%) patients receiving hemodialysis, compared with 1 of 20 (5%, 95% CI 1% to 23%) controls (p < 0.001). No patient with nondetectable levels at 4 weeks developed anti-RBD IgG by 8 weeks. Results were similar in non-immunosuppressed and younger individuals. Three patients receiving hemodialysis developed severe COVID-19 after vaccination. Among those with previous SARS-CoV-2 infection, median anti-RBD IgG levels at 8 weeks in patients receiving hemodialysis were similar to controls at 3 weeks (p = 0.3) and to convalescent plasma (p = 0.8). INTERPRETATION: A single dose of BNT162b2 vaccine failed to elicit a humoral immune response in most patients receiving hemodialysis without previous SARS-CoV-2 infection, even after prolonged observation. In those with previous SARS-CoV-2 infection, the antibody response was delayed. We advise that patients receiving hemodialysis be prioritized for a second BNT162b2 dose at the recommended 3-week interval.
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Affiliation(s)
- Rémi Goupil
- Centre de recherche de l'Hôpital du Sacré-Cœur de Montréal (Goupil); Centre de recherche du Centre hospitalier de l'Université de Montréal (CHUM) (Benlarbi, Chatterjee, Goyette, Finzi, Suri); Centre de recherche de l'Hôpital Maisonneuve-Rosemont (Nadeau-Fredette, Lamarche), Montréal, Que.; Department of Microbiology and Immunology and Division of Nephrology, Department of Medicine (Gunaratnam), Western University, London, Ont.; Research Institute of the McGill University Health Centre (Tom, Suri); Département de microbiologie, infectiologie et immunologie (Finzi), Université de Montréal; Department of Microbiology and Immunology (Finzi), McGill University; Division of Nephrology (Suri), Department of Medicine, McGill University, Montréal, Que
| | - Mehdi Benlarbi
- Centre de recherche de l'Hôpital du Sacré-Cœur de Montréal (Goupil); Centre de recherche du Centre hospitalier de l'Université de Montréal (CHUM) (Benlarbi, Chatterjee, Goyette, Finzi, Suri); Centre de recherche de l'Hôpital Maisonneuve-Rosemont (Nadeau-Fredette, Lamarche), Montréal, Que.; Department of Microbiology and Immunology and Division of Nephrology, Department of Medicine (Gunaratnam), Western University, London, Ont.; Research Institute of the McGill University Health Centre (Tom, Suri); Département de microbiologie, infectiologie et immunologie (Finzi), Université de Montréal; Department of Microbiology and Immunology (Finzi), McGill University; Division of Nephrology (Suri), Department of Medicine, McGill University, Montréal, Que
| | - William Beaubien-Souligny
- Centre de recherche de l'Hôpital du Sacré-Cœur de Montréal (Goupil); Centre de recherche du Centre hospitalier de l'Université de Montréal (CHUM) (Benlarbi, Chatterjee, Goyette, Finzi, Suri); Centre de recherche de l'Hôpital Maisonneuve-Rosemont (Nadeau-Fredette, Lamarche), Montréal, Que.; Department of Microbiology and Immunology and Division of Nephrology, Department of Medicine (Gunaratnam), Western University, London, Ont.; Research Institute of the McGill University Health Centre (Tom, Suri); Département de microbiologie, infectiologie et immunologie (Finzi), Université de Montréal; Department of Microbiology and Immunology (Finzi), McGill University; Division of Nephrology (Suri), Department of Medicine, McGill University, Montréal, Que
| | - Annie-Claire Nadeau-Fredette
- Centre de recherche de l'Hôpital du Sacré-Cœur de Montréal (Goupil); Centre de recherche du Centre hospitalier de l'Université de Montréal (CHUM) (Benlarbi, Chatterjee, Goyette, Finzi, Suri); Centre de recherche de l'Hôpital Maisonneuve-Rosemont (Nadeau-Fredette, Lamarche), Montréal, Que.; Department of Microbiology and Immunology and Division of Nephrology, Department of Medicine (Gunaratnam), Western University, London, Ont.; Research Institute of the McGill University Health Centre (Tom, Suri); Département de microbiologie, infectiologie et immunologie (Finzi), Université de Montréal; Department of Microbiology and Immunology (Finzi), McGill University; Division of Nephrology (Suri), Department of Medicine, McGill University, Montréal, Que
| | - Debashree Chatterjee
- Centre de recherche de l'Hôpital du Sacré-Cœur de Montréal (Goupil); Centre de recherche du Centre hospitalier de l'Université de Montréal (CHUM) (Benlarbi, Chatterjee, Goyette, Finzi, Suri); Centre de recherche de l'Hôpital Maisonneuve-Rosemont (Nadeau-Fredette, Lamarche), Montréal, Que.; Department of Microbiology and Immunology and Division of Nephrology, Department of Medicine (Gunaratnam), Western University, London, Ont.; Research Institute of the McGill University Health Centre (Tom, Suri); Département de microbiologie, infectiologie et immunologie (Finzi), Université de Montréal; Department of Microbiology and Immunology (Finzi), McGill University; Division of Nephrology (Suri), Department of Medicine, McGill University, Montréal, Que
| | - Guillaume Goyette
- Centre de recherche de l'Hôpital du Sacré-Cœur de Montréal (Goupil); Centre de recherche du Centre hospitalier de l'Université de Montréal (CHUM) (Benlarbi, Chatterjee, Goyette, Finzi, Suri); Centre de recherche de l'Hôpital Maisonneuve-Rosemont (Nadeau-Fredette, Lamarche), Montréal, Que.; Department of Microbiology and Immunology and Division of Nephrology, Department of Medicine (Gunaratnam), Western University, London, Ont.; Research Institute of the McGill University Health Centre (Tom, Suri); Département de microbiologie, infectiologie et immunologie (Finzi), Université de Montréal; Department of Microbiology and Immunology (Finzi), McGill University; Division of Nephrology (Suri), Department of Medicine, McGill University, Montréal, Que
| | - Lakshman Gunaratnam
- Centre de recherche de l'Hôpital du Sacré-Cœur de Montréal (Goupil); Centre de recherche du Centre hospitalier de l'Université de Montréal (CHUM) (Benlarbi, Chatterjee, Goyette, Finzi, Suri); Centre de recherche de l'Hôpital Maisonneuve-Rosemont (Nadeau-Fredette, Lamarche), Montréal, Que.; Department of Microbiology and Immunology and Division of Nephrology, Department of Medicine (Gunaratnam), Western University, London, Ont.; Research Institute of the McGill University Health Centre (Tom, Suri); Département de microbiologie, infectiologie et immunologie (Finzi), Université de Montréal; Department of Microbiology and Immunology (Finzi), McGill University; Division of Nephrology (Suri), Department of Medicine, McGill University, Montréal, Que
| | - Caroline Lamarche
- Centre de recherche de l'Hôpital du Sacré-Cœur de Montréal (Goupil); Centre de recherche du Centre hospitalier de l'Université de Montréal (CHUM) (Benlarbi, Chatterjee, Goyette, Finzi, Suri); Centre de recherche de l'Hôpital Maisonneuve-Rosemont (Nadeau-Fredette, Lamarche), Montréal, Que.; Department of Microbiology and Immunology and Division of Nephrology, Department of Medicine (Gunaratnam), Western University, London, Ont.; Research Institute of the McGill University Health Centre (Tom, Suri); Département de microbiologie, infectiologie et immunologie (Finzi), Université de Montréal; Department of Microbiology and Immunology (Finzi), McGill University; Division of Nephrology (Suri), Department of Medicine, McGill University, Montréal, Que
| | - Alexander Tom
- Centre de recherche de l'Hôpital du Sacré-Cœur de Montréal (Goupil); Centre de recherche du Centre hospitalier de l'Université de Montréal (CHUM) (Benlarbi, Chatterjee, Goyette, Finzi, Suri); Centre de recherche de l'Hôpital Maisonneuve-Rosemont (Nadeau-Fredette, Lamarche), Montréal, Que.; Department of Microbiology and Immunology and Division of Nephrology, Department of Medicine (Gunaratnam), Western University, London, Ont.; Research Institute of the McGill University Health Centre (Tom, Suri); Département de microbiologie, infectiologie et immunologie (Finzi), Université de Montréal; Department of Microbiology and Immunology (Finzi), McGill University; Division of Nephrology (Suri), Department of Medicine, McGill University, Montréal, Que
| | - Andrés Finzi
- Centre de recherche de l'Hôpital du Sacré-Cœur de Montréal (Goupil); Centre de recherche du Centre hospitalier de l'Université de Montréal (CHUM) (Benlarbi, Chatterjee, Goyette, Finzi, Suri); Centre de recherche de l'Hôpital Maisonneuve-Rosemont (Nadeau-Fredette, Lamarche), Montréal, Que.; Department of Microbiology and Immunology and Division of Nephrology, Department of Medicine (Gunaratnam), Western University, London, Ont.; Research Institute of the McGill University Health Centre (Tom, Suri); Département de microbiologie, infectiologie et immunologie (Finzi), Université de Montréal; Department of Microbiology and Immunology (Finzi), McGill University; Division of Nephrology (Suri), Department of Medicine, McGill University, Montréal, Que
| | - Rita S Suri
- Centre de recherche de l'Hôpital du Sacré-Cœur de Montréal (Goupil); Centre de recherche du Centre hospitalier de l'Université de Montréal (CHUM) (Benlarbi, Chatterjee, Goyette, Finzi, Suri); Centre de recherche de l'Hôpital Maisonneuve-Rosemont (Nadeau-Fredette, Lamarche), Montréal, Que.; Department of Microbiology and Immunology and Division of Nephrology, Department of Medicine (Gunaratnam), Western University, London, Ont.; Research Institute of the McGill University Health Centre (Tom, Suri); Département de microbiologie, infectiologie et immunologie (Finzi), Université de Montréal; Department of Microbiology and Immunology (Finzi), McGill University; Division of Nephrology (Suri), Department of Medicine, McGill University, Montréal, Que.
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166
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Yamamoto K, Ohmagari N. Microbiological Testing for Coronavirus Disease 2019. JMA J 2021; 4:67-75. [PMID: 33997438 PMCID: PMC8119126 DOI: 10.31662/jmaj.2021-0012] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 02/18/2021] [Indexed: 01/03/2023] Open
Abstract
Microbiological diagnosis of coronavirus disease 2019 (COVID-19) is mainly performed through nucleic acid amplification test (NAAT) and antigen test. Although NAAT is the standard diagnostic test, its use is limited by insufficient laboratory resources and long turnaround time. Point-of-care NAAT tests have been introduced to address these shortcomings, but their varied sensitivity and resource constraints remain a concern. Antigen tests require fewer resources but have low sensitivity. Nevertheless, low-sensitivity tests may be useful depending on the situation. In contrast, in some clinical phases of COVID-19, high-sensitivity tests may provide false-negative results. Therefore, the right testing strategy is needed for an accurate diagnosis. In this review, the characteristics and clinical applications of microbiological tests available in Japan (NAAT, antigen test, and antibody test) are discussed. The clinical diagnosis of COVID-19 is slightly complicated, and cases in which the infection spreads from asymptomatic infected individuals are many; hence, laboratory diagnosis is essential to prevent further transmission.
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Affiliation(s)
- Kei Yamamoto
- Disease Control and Prevention Center, National Center for Global Health and Medicine, Tokyo, Japan
| | - Norio Ohmagari
- Disease Control and Prevention Center, National Center for Global Health and Medicine, Tokyo, Japan
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167
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Sermet-Gaudelus I, Temmam S, Huon C, Behillil S, Gajdos V, Bigot T, Lurier T, Chrétien D, Backovic M, Delaunay-Moisan A, Donati F, Albert M, Foucaud E, Mesplées B, Benoist G, Faye A, Duval-Arnould M, Cretolle C, Charbit M, Aubart M, Auriau J, Lorrot M, Kariyawasam D, Fertitta L, Orliaguet G, Pigneur B, Bader-Meunier B, Briand C, Enouf V, Toubiana J, Guilleminot T, van der Werf S, Leruez-Ville M, Eloit M. Prior infection by seasonal coronaviruses, as assessed by serology, does not prevent SARS-CoV-2 infection and disease in children, France, April to June 2020. Euro Surveill 2021; 26:2001782. [PMID: 33797390 PMCID: PMC8017906 DOI: 10.2807/1560-7917.es.2021.26.13.2001782] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Accepted: 03/07/2021] [Indexed: 01/10/2023] Open
Abstract
BackgroundChildren have a low rate of COVID-19 and secondary severe multisystem inflammatory syndrome (MIS) but present a high prevalence of symptomatic seasonal coronavirus infections.AimWe tested if prior infections by seasonal coronaviruses (HCoV) NL63, HKU1, 229E or OC43 as assessed by serology, provide cross-protective immunity against SARS-CoV-2 infection.MethodsWe set a cross-sectional observational multicentric study in pauci- or asymptomatic children hospitalised in Paris during the first wave for reasons other than COVID (hospitalised children (HOS), n = 739) plus children presenting with MIS (n = 36). SARS-CoV-2 antibodies directed against the nucleoprotein (N) and S1 and S2 domains of the spike (S) proteins were monitored by an in-house luciferase immunoprecipitation system assay. We randomly selected 69 SARS-CoV-2-seropositive patients (including 15 with MIS) and 115 matched SARS-CoV-2-seronegative patients (controls (CTL)). We measured antibodies against SARS-CoV-2 and HCoV as evidence for prior corresponding infections and assessed if SARS-CoV-2 prevalence of infection and levels of antibody responses were shaped by prior seasonal coronavirus infections.ResultsPrevalence of HCoV infections were similar in HOS, MIS and CTL groups. Antibody levels against HCoV were not significantly different in the three groups and were not related to the level of SARS-CoV-2 antibodies in the HOS and MIS groups. SARS-CoV-2 antibody profiles were different between HOS and MIS children.ConclusionPrior infection by seasonal coronaviruses, as assessed by serology, does not interfere with SARS-CoV-2 infection and related MIS in children.
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Affiliation(s)
- Isabelle Sermet-Gaudelus
- Institut Necker Enfants Malades, INSERM U 1171, Paris, France
- Hôpital Necker-Enfants Malades, Assistance Publique Hôpitaux de Paris, Paris, France
- Université de Paris, Paris, France
- These authors contributed equally to the work
| | - Sarah Temmam
- These authors contributed equally to the work
- Pathogen Discovery Laboratory, Department of Virology, Institut Pasteur, Paris, France
| | - Christèle Huon
- Pathogen Discovery Laboratory, Department of Virology, Institut Pasteur, Paris, France
| | - Sylvie Behillil
- Molecular Genetics of RNA Viruses, Department of Virology, CNRS UMR3569, Université de Paris, Institut Pasteur, Paris, France
- National Reference Center for Respiratory Viruses, Institut Pasteur, Paris, France
| | - Vincent Gajdos
- Hôpital Antoine Beclere, Clamart, France
- Centre for Research in Epidemiology and Population Health, INSERM UMR1018, Villejuif, France
| | - Thomas Bigot
- Hub de Bioinformatique et Biostatistique - Département Biologie Computationnelle, Institut Pasteur, USR 3756 CNRS, Paris, France
- Pathogen Discovery Laboratory, Department of Virology, Institut Pasteur, Paris, France
| | - Thibaut Lurier
- Université Clermont Auvergne, INRAE, VetAgro Sup, UMR EPIA, Saint-Genès-Champanelle, France
- Université de Lyon, INRAE, VetAgro Sup, UMR EPIA, Marcy l'Etoile, France
- Université de Lyon, INRAE, VetAgro Sup, Usc 1233 UR RS2GP, Marcy l'Etoile, France
| | - Delphine Chrétien
- Pathogen Discovery Laboratory, Department of Virology, Institut Pasteur, Paris, France
| | - Marija Backovic
- Unité de Virologie Structurale, Institut Pasteur, Département de Virologie, CNRS, UMR3569, Paris, France
| | - Agnès Delaunay-Moisan
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), Gif-sur-Yvette, France
| | - Flora Donati
- Molecular Genetics of RNA Viruses, Department of Virology, CNRS UMR3569, Université de Paris, Institut Pasteur, Paris, France
- National Reference Center for Respiratory Viruses, Institut Pasteur, Paris, France
| | - Mélanie Albert
- Molecular Genetics of RNA Viruses, Department of Virology, CNRS UMR3569, Université de Paris, Institut Pasteur, Paris, France
- National Reference Center for Respiratory Viruses, Institut Pasteur, Paris, France
| | | | | | | | | | | | - Célia Cretolle
- Hôpital Necker-Enfants Malades, Assistance Publique Hôpitaux de Paris, Paris, France
| | - Marina Charbit
- Hôpital Necker-Enfants Malades, Assistance Publique Hôpitaux de Paris, Paris, France
| | - Mélodie Aubart
- Hôpital Necker-Enfants Malades, Assistance Publique Hôpitaux de Paris, Paris, France
| | - Johanne Auriau
- Hôpital Necker-Enfants Malades, Assistance Publique Hôpitaux de Paris, Paris, France
| | | | | | - Laura Fertitta
- Hôpital Necker-Enfants Malades, Assistance Publique Hôpitaux de Paris, Paris, France
| | - Gilles Orliaguet
- Hôpital Necker-Enfants Malades, Assistance Publique Hôpitaux de Paris, Paris, France
| | - Bénédicte Pigneur
- Hôpital Necker-Enfants Malades, Assistance Publique Hôpitaux de Paris, Paris, France
| | | | | | - Vincent Enouf
- Plateforme de microbiologie mutualisée (P2M), Pasteur International Bioresources Network (PIBnet), Institut Pasteur, Paris, France
- Molecular Genetics of RNA Viruses, Department of Virology, CNRS UMR3569, Université de Paris, Institut Pasteur, Paris, France
- National Reference Center for Respiratory Viruses, Institut Pasteur, Paris, France
| | - Julie Toubiana
- Hôpital Necker-Enfants Malades, Assistance Publique Hôpitaux de Paris, Paris, France
- Unité Biodiversité et Epidemiologie des Bacteries Pathogènes, Institut Pasteur, Paris, France
- Université de Paris, Paris, France
| | | | - Sylvie van der Werf
- Molecular Genetics of RNA Viruses, Department of Virology, CNRS UMR3569, Université de Paris, Institut Pasteur, Paris, France
- National Reference Center for Respiratory Viruses, Institut Pasteur, Paris, France
| | | | - Marc Eloit
- Ecole Nationale Vétérinaire d'Alfort, Maisons Alfort, France
- Pathogen Discovery Laboratory, Department of Virology, Institut Pasteur, Paris, France
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Bennett RS, Postnikova EN, Liang J, Gross R, Mazur S, Dixit S, Lukin VV, Kocher G, Yu S, Georgia-Clark S, Gerhardt D, Cai Y, Marron L, Holbrook MR. Scalable, Micro-Neutralization Assay for Qualitative Assessment of SARS-CoV-2 (COVID-19) Virus-Neutralizing Antibodies in Human Clinical Samples. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2021. [PMID: 33688658 PMCID: PMC7941633 DOI: 10.1101/2021.03.05.434152] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
As the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic was expanding, it was clear that effective testing for the presence of neutralizing antibodies in the blood of convalescent patients would be critical for development of plasma-based therapeutic approaches. To address the need for a high-quality neutralization assay against SARS-CoV-2, a previously established fluorescence reduction neutralization assay (FRNA) against Middle East respiratory syndrome coronavirus (MERS-CoV) was modified and optimized. The SARS-CoV-2 FRNA provides a quantitative assessment of a large number of infected cells through use of a high-content imaging system. Because of this approach, and the fact that it does not involve subjective interpretation, this assay is more efficient and more accurate than other neutralization assays. In addition, the ability to set robust acceptance criteria for individual plates and specific test wells provided further rigor to this assay. Such agile adaptability avails use with multiple virus variants. By February 2021, the SARS-CoV-2 FRNA had been used to screen over 5,000 samples, including acute and convalescent plasma or serum samples and therapeutic antibody treatments, for SARS-CoV-2 neutralizing titers.
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Affiliation(s)
- Richard S Bennett
- Integrated Research Facility at Fort Detrick, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Frederick, MD 21702, USA
| | - Elena N Postnikova
- Integrated Research Facility at Fort Detrick, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Frederick, MD 21702, USA
| | - Janie Liang
- Integrated Research Facility at Fort Detrick, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Frederick, MD 21702, USA
| | - Robin Gross
- Integrated Research Facility at Fort Detrick, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Frederick, MD 21702, USA
| | - Steven Mazur
- Integrated Research Facility at Fort Detrick, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Frederick, MD 21702, USA
| | - Saurabh Dixit
- Integrated Research Facility at Fort Detrick, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Frederick, MD 21702, USA
| | | | - Greg Kocher
- Integrated Research Facility at Fort Detrick, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Frederick, MD 21702, USA
| | - Shuiqing Yu
- Integrated Research Facility at Fort Detrick, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Frederick, MD 21702, USA
| | - Shalamar Georgia-Clark
- Integrated Research Facility at Fort Detrick, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Frederick, MD 21702, USA
| | - Dawn Gerhardt
- Integrated Research Facility at Fort Detrick, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Frederick, MD 21702, USA
| | - Yingyun Cai
- Integrated Research Facility at Fort Detrick, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Frederick, MD 21702, USA
| | - Lindsay Marron
- Integrated Research Facility at Fort Detrick, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Frederick, MD 21702, USA
| | - Michael R Holbrook
- Integrated Research Facility at Fort Detrick, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Frederick, MD 21702, USA
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