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Di Chiara C, Cantarutti A, Raffaella Petrara M, Bonfante F, Benetti E, Boracchini R, Bosa L, Carmona F, Cosma C, Cotugno N, Le Prevost M, Martini G, Meneghel A, Pagliari M, Palma P, Ruffoni E, Zin A, De Rossi A, Giaquinto C, Donà D, Padoan A. Stronger and durable SARS-CoV-2 immune response to mRNA vaccines in 5-11 years old children with prior COVID-19. Vaccine 2024; 42:263-270. [PMID: 38071105 DOI: 10.1016/j.vaccine.2023.12.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 11/08/2023] [Accepted: 12/01/2023] [Indexed: 01/01/2024]
Abstract
BACKGROUND AND OBJECTIVES mRNA vaccines elicit a durable humoral response to SARS-CoV-2 in adults, whereas evidence in children is scarce. This study aimed to assess the early and long-term immune response to the mRNA vaccine in children with or without previous SARS-CoV-2 infection. METHODS In a multicentre prospective observational study, we profiled the immune response to the Pfizer BioNTech (BNT162b2) vaccine in 5-11-year-old children attending the University Pediatric Hospital of Padua and Bambino-Gesù Hospital in Rome (Italy) from December-2021 to February-2023. Blood samples were collected pre-, 1-, and 6-months after vaccination. Neutralizing antibodies (NAbs) and anti-spike-receptor-binding-domain (anti-S-RBD) IgG titers were analyzed through Plaque Reduction Neutralization Test (PRNT) and chemiluminescent immune-enzymatic assay (CLIA), respectively. Immune cell phenotypes were analyzed by flow cytometry. RESULTS Sixty children (26 [43 %] female, median age = 8 years [IQR = 7-10.7]) were enrolled in the study, including 46 children with a laboratory-confirmed previous COVID-19 (SARS-CoV-2-recovered) and 14 SARS-CoV-2-naïve participants defined as the absence of antigen-specific antibodies before vaccination. SARS-CoV-2-recovered participants recorded higher anti-S-RBD IgG and Wild-type and Omicron BA.2 NAbs titers than SARS-CoV-2-naïve participants at both 1- and 6-months after vaccination. Antibody titers correlated with T (Tregs) and B (Bregs) regulatory cell frequencies in SARS-CoV-2-recovered children. Both SARS-CoV-2-recovered and SARS-CoV-2-naïve participants decreased antibody titers by approximately 100 to 250 % from 1 to 6 months. While children with immunocompromising underlying conditions developed immune responses comparable to those of healthy children, solid organ transplant recipients exhibited lower levels of NAbs and anti-S-RBD IgG titers, as well as reduced frequencies of Tregs and Bregs. CONCLUSIONS mRNA vaccination triggered a higher production of specific anti-SARS-CoV-2 antibodies along with increased levels of regulatory cells in children with previous SARS-CoV-2 infection up to the following 6 months. These findings provide insights into boosting pre-existing immunity.
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Affiliation(s)
- Costanza Di Chiara
- Department for Women's and Children's Health, University of Padova, Via Giustiniani, 3 - 35128 Padua, Italy; Penta - Child Health Research, Corso Stati Uniti, 4 - 35127 Padua, Italy.
| | - Anna Cantarutti
- Department of Statistics and Quantitative Methods, Division of Biostatistics, Epidemiology and Public Health, Laboratory of Healthcare Research and Pharmacoepidemiology, University of Milano-Bicocca, Piazza dell'Ateneo Nuovo, 1 - 20126 Milan, Italy.
| | - Maria Raffaella Petrara
- Oncology and Immunology Section, Department of Surgery, Oncology and Gastroenterology, University of Padova, Via Giustiniani, 2 - 35124 Padua, Italy.
| | - Francesco Bonfante
- Division of Comparative Biomedical Sciences, Istituto Zooprofilattico Sperimentale delle Venezie, Viale dell'Università, 10 - 35020 Legnaro (Padua), Italy.
| | - Elisa Benetti
- Department of Medicine-DIMED, University of Padova, Via Giustiniani 2, 35128 Padua, Italy.
| | - Riccardo Boracchini
- Department of Statistics and Quantitative Methods, Division of Biostatistics, Epidemiology and Public Health, Laboratory of Healthcare Research and Pharmacoepidemiology, University of Milano-Bicocca, Piazza dell'Ateneo Nuovo, 1 - 20126 Milan, Italy.
| | - Luca Bosa
- Department for Women's and Children's Health, University of Padova, Via Giustiniani, 3 - 35128 Padua, Italy.
| | - Francesco Carmona
- Immunology and Diagnostic Molecular Oncology Unit, Veneto Institute of Oncology IOV-IRCCS, Via Gattamelata, 64 - 35128 Padua, Italy.
| | - Chiara Cosma
- Department of Laboratory Medicine, University-Hospital of Padova, Via Giambattista Belzoni, 160 - 35121 Padua, Italy.
| | - Nicola Cotugno
- Unit of Clinical Immunology and Vaccinology, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy; Department of Systems Medicine, University of Rome "Tor Vergata", Piazza Sant'Onofrio, 4 - 00165 Rome, Italy.
| | - Marthe Le Prevost
- Medical Research Council Clinical Trials Unit at University College London, 90 High Holborn, WC1V 6LJ London, United Kingdom.
| | - Giorgia Martini
- Department for Women's and Children's Health, University of Padova, Via Giustiniani, 3 - 35128 Padua, Italy.
| | - Alessandra Meneghel
- Department for Women's and Children's Health, University of Padova, Via Giustiniani, 3 - 35128 Padua, Italy.
| | - Matteo Pagliari
- Division of Comparative Biomedical Sciences, Istituto Zooprofilattico Sperimentale delle Venezie, Viale dell'Università, 10 - 35020 Legnaro (Padua), Italy.
| | - Paolo Palma
- Unit of Clinical Immunology and Vaccinology, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy; Department of Systems Medicine, University of Rome "Tor Vergata", Piazza Sant'Onofrio, 4 - 00165 Rome, Italy.
| | - Elena Ruffoni
- Immunology and Diagnostic Molecular Oncology Unit, Veneto Institute of Oncology IOV-IRCCS, Via Gattamelata, 64 - 35128 Padua, Italy.
| | - Annachiara Zin
- Department for Women's and Children's Health, University of Padova, Via Giustiniani, 3 - 35128 Padua, Italy.
| | - Anita De Rossi
- Oncology and Immunology Section, Department of Surgery, Oncology and Gastroenterology, University of Padova, Via Giustiniani, 2 - 35124 Padua, Italy; Immunology and Diagnostic Molecular Oncology Unit, Veneto Institute of Oncology IOV-IRCCS, Via Gattamelata, 64 - 35128 Padua, Italy.
| | - Carlo Giaquinto
- Department for Women's and Children's Health, University of Padova, Via Giustiniani, 3 - 35128 Padua, Italy; Penta - Child Health Research, Corso Stati Uniti, 4 - 35127 Padua, Italy.
| | - Daniele Donà
- Department for Women's and Children's Health, University of Padova, Via Giustiniani, 3 - 35128 Padua, Italy; Penta - Child Health Research, Corso Stati Uniti, 4 - 35127 Padua, Italy.
| | - Andrea Padoan
- Department of Medicine-DIMED, University of Padova, Via Giustiniani 2, 35128 Padua, Italy.
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Padoan A, Cosma C, Di Chiara C, Furlan G, Gastaldo S, Talli I, Donà D, Basso D, Giaquinto C, Plebani M. Clinical and Analytical Performance of ELISA Salivary Serologic Assay to Detect SARS-CoV-2 IgG in Children and Adults. Antibodies (Basel) 2024; 13:6. [PMID: 38247570 PMCID: PMC10801479 DOI: 10.3390/antib13010006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 12/19/2023] [Accepted: 12/28/2023] [Indexed: 01/23/2024] Open
Abstract
Saliva is a promising matrix with several purposes. Our aim is to verify if salivary anti-SARS-CoV-2 antibody determination is suitable for monitoring immune responses. One hundred eighty-seven subjects were enrolled at University-Hospital Padova: 105 females (56.1%) and 82 males (43.9%), 95 (50.8%) children and 92 (49.2%) adults. Subjects self-collected saliva using Salivette; nineteen subjects collected three different samples within the day. A serum sample was obtained for all individuals. The N/S anti-SARS-CoV-2 salivary IgG (sal-IgG) and serum anti-SARS-CoV-2 S-RBD IgG (ser-IgG) were used for determining anti-SARS-CoV-2 antibodies. The mean (min-max) age was 9.0 (1-18) for children and 42.5 (20-61) for adults. Of 187 samples, 63 were negative for sal-IgG (33.7%), while 7 were negative for ser-IgG (3.7%). Spearman's correlation was 0.56 (p < 0.001). Sal-IgG and ser-IgG levels were correlated with age but not with gender, comorbidities, prolonged therapy, previous SARS-CoV-2 infection, or time from last COVID-19 infection/vaccination. The repeatability ranged from 23.8% (7.4 kAU/L) to 4.0% (3.77 kAU/L). The linearity of the assay was missed in 4/6 samples. No significant intrasubject differences were observed in sal-IgG across samples collected at different time points. Sal-IgG has good agreement with ser-IgG. Noninvasive saliva collection represents an alternative method for antibody measurement, especially in children.
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Affiliation(s)
- Andrea Padoan
- Department of Medicine (DIMED), University of Padova, 35128 Padova, Italy; (A.P.); (C.C.); (D.B.); (M.P.)
- UOC of Laboratory Medicine, University-Hospital of Padova, 35128 Padova, Italy
- QI.LAB.MED, Spin-off of the University of Padova, 35011 Padova, Italy;
| | - Chiara Cosma
- Department of Medicine (DIMED), University of Padova, 35128 Padova, Italy; (A.P.); (C.C.); (D.B.); (M.P.)
- UOC of Laboratory Medicine, University-Hospital of Padova, 35128 Padova, Italy
- QI.LAB.MED, Spin-off of the University of Padova, 35011 Padova, Italy;
| | - Costanza Di Chiara
- Department of Women’s and Children’s Health, University of Padova, 35128 Padova, Italy (S.G.); (D.D.); (C.G.)
- Penta–Child Health Research, 35127 Padua, Italy
| | - Giulia Furlan
- QI.LAB.MED, Spin-off of the University of Padova, 35011 Padova, Italy;
| | - Stefano Gastaldo
- Department of Women’s and Children’s Health, University of Padova, 35128 Padova, Italy (S.G.); (D.D.); (C.G.)
| | - Ilaria Talli
- Department of Medicine (DIMED), University of Padova, 35128 Padova, Italy; (A.P.); (C.C.); (D.B.); (M.P.)
- UOC of Laboratory Medicine, University-Hospital of Padova, 35128 Padova, Italy
| | - Daniele Donà
- Department of Women’s and Children’s Health, University of Padova, 35128 Padova, Italy (S.G.); (D.D.); (C.G.)
- Penta–Child Health Research, 35127 Padua, Italy
| | - Daniela Basso
- Department of Medicine (DIMED), University of Padova, 35128 Padova, Italy; (A.P.); (C.C.); (D.B.); (M.P.)
- UOC of Laboratory Medicine, University-Hospital of Padova, 35128 Padova, Italy
- QI.LAB.MED, Spin-off of the University of Padova, 35011 Padova, Italy;
| | - Carlo Giaquinto
- Department of Women’s and Children’s Health, University of Padova, 35128 Padova, Italy (S.G.); (D.D.); (C.G.)
- Penta–Child Health Research, 35127 Padua, Italy
| | - Mario Plebani
- Department of Medicine (DIMED), University of Padova, 35128 Padova, Italy; (A.P.); (C.C.); (D.B.); (M.P.)
- UOC of Laboratory Medicine, University-Hospital of Padova, 35128 Padova, Italy
- QI.LAB.MED, Spin-off of the University of Padova, 35011 Padova, Italy;
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Flor N, García MI, Molineri A, Bottasso O, Diez C, Veaute C. Antibodies to SARS-CoV2 induced by vaccination and infection correlate with protection against the infection. Vaccine 2023; 41:7206-7211. [PMID: 37884413 DOI: 10.1016/j.vaccine.2023.10.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 10/03/2023] [Accepted: 10/13/2023] [Indexed: 10/28/2023]
Abstract
The COVID-19 pandemic remained worldwide for almost three years, but little is known about the dynamics of humoral immune response to the third dose over time and its protection from infection. Our aim was to assess the humoral immune response after the third dose of the different vaccines administered to SARS-CoV-2 naive and previously infected individuals, and its correlation with protection in an academic community. For each person studied (185), three blood samples were taken between December 2021 and July 2022, one month apart. Anti-S antibodies were quantified by ELISA, while anti-N antibody levels were determined by ECLIA. Most of the participants had received two doses of viral vector-based, mRNA-based and virus-inactivated vaccines. Although anti-N antibody levels revealed that 80% of the individuals had been exposed to the virus before or during the study, only 42% reported having been diagnosed. When anti-S IgG levels were measured 3-5 months after the second dose of any vaccine, they were higher in those previously infected individuals. The same results were observed for anti-N IgG levels in those who received 2 doses of the virus-inactivated vaccine. When analyzing the dynamics of anti-S antibodies we observed that, although positive IgG antibody levels were detected 5-6 months after the second dose administration, those observed 30-60 days after the third dose were significantly higher and remained so for at least 8 months. Higher levels of anti-S IgG antibodies at the first sampling were associated with a lower incidence of subsequent infection. The same association was seen in people who received the booster compared with those who received two doses. This study provides further evidence that anti-S IgG antibodies remained at high levels over time, and both anti-S levels and the third dose of anti-SARS-CoV-2 vaccine correlate with protection against the infection. It also shows that infection acts as a booster of immunization, increasing levels of both anti-N and anti-S IgG.
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Affiliation(s)
- Noelia Flor
- Laboratorio de Inmunología Experimental, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Argentina
| | - María Inés García
- Laboratorio de Inmunología Experimental, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Argentina
| | - Ana Molineri
- Instituto de Investigación de la Cadena Láctea, Instituto Nacional de Tecnología Agropecuaria-CONICET, Argentina
| | - Oscar Bottasso
- Instituto de Inmunología Clínica y Experimental de Rosario, Universidad Nacional de Rosario. CONICET, Argentina
| | - Cristina Diez
- Laboratorio de Biología Molecular e Inmunología Aplicadas, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Argentina
| | - Carolina Veaute
- Laboratorio de Inmunología Experimental, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Argentina; Laboratorio de Biología Molecular e Inmunología Aplicadas, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Argentina.
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4
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Liang Z, Lu X, Jiao X, He Y, Meng B, Xie J, Qu Z, Zhu M, Gong X, Zhao Y, Peng T, Fang X, Dai X. Traceable value of immunoglobulin G against receptor-binding domain of SARS-CoV-2 confirmation and application to point-of-care testing system development. Mikrochim Acta 2023; 190:417. [PMID: 37768390 DOI: 10.1007/s00604-023-06004-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2023] [Accepted: 09/17/2023] [Indexed: 09/29/2023]
Abstract
A highly purified and bioactive immunoglobulin G monoclonal antibody against receptor-binding domain of SARS-CoV-2 (RBD-IgG-MAb) has been accurately quantified by amino acid determination using isotope dilution liquid chromatography-mass spectrometry. Absolute quantification of RBD-IgG-MAb was achieved by averaging 4 amino acid certified reference materials, which allows the quantitative value (66.1 ± 5.8 μg/L) to be traced to SI unit (mol). Afterwards, the RBD-IgG-MAb was employed as control and calibration compound for the development of a point-of-care testing (POCT) system based on colloidal gold lateral flow immunoassay, which aimed to rapidly and accurately detect the level of protective RBD-IgG after vaccination. Under the detection parameters, a sigmoidal curve has been plotted between signal intensity and the logarithmic concentration for quantitative detection with the limit of detection of about 0.39 μg/mL. The relative standard deviations of intra-assay and inter-assay were lower than 2.3% and 14%, and the recoveries ranged from 87 to 100%, respectively. Fingertip blood samples from 37 volunteers after vaccination were analyzed by the POCT system; results showed that levels of RBD-IgG in 33 out of 37 samples ranged from 0.45 to 2.46 μg/mL with the average level of 0.91 μg/mL. The developed POCT system has been successfully established with the quantity-traceability RBD-IgG-MAb as control and calibration compound, and the scientific contribution of this work can be promoted to other areas.
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Affiliation(s)
- Zhanwei Liang
- Technology Innovation Center of Mass Spectrometry for State Market Regulation, Center for Advanced Measurement Science, National Institute of Metrology, Beijing, 100029, People's Republic of China
| | - Xin Lu
- Technology Innovation Center of Mass Spectrometry for State Market Regulation, Center for Advanced Measurement Science, National Institute of Metrology, Beijing, 100029, People's Republic of China
| | - Xueshima Jiao
- Technology Innovation Center of Mass Spectrometry for State Market Regulation, Center for Advanced Measurement Science, National Institute of Metrology, Beijing, 100029, People's Republic of China
| | - Yi He
- Novoprotein Scientific Incorporation, Suzhou, 215200, People's Republic of China
| | - Bo Meng
- Technology Innovation Center of Mass Spectrometry for State Market Regulation, Center for Advanced Measurement Science, National Institute of Metrology, Beijing, 100029, People's Republic of China
| | - Jie Xie
- Technology Innovation Center of Mass Spectrometry for State Market Regulation, Center for Advanced Measurement Science, National Institute of Metrology, Beijing, 100029, People's Republic of China
| | - Ziyu Qu
- Technology Innovation Center of Mass Spectrometry for State Market Regulation, Center for Advanced Measurement Science, National Institute of Metrology, Beijing, 100029, People's Republic of China
| | - Manman Zhu
- Technology Innovation Center of Mass Spectrometry for State Market Regulation, Center for Advanced Measurement Science, National Institute of Metrology, Beijing, 100029, People's Republic of China
| | - Xiaoyun Gong
- Technology Innovation Center of Mass Spectrometry for State Market Regulation, Center for Advanced Measurement Science, National Institute of Metrology, Beijing, 100029, People's Republic of China
| | - Yang Zhao
- Technology Innovation Center of Mass Spectrometry for State Market Regulation, Center for Advanced Measurement Science, National Institute of Metrology, Beijing, 100029, People's Republic of China
| | - Tao Peng
- Technology Innovation Center of Mass Spectrometry for State Market Regulation, Center for Advanced Measurement Science, National Institute of Metrology, Beijing, 100029, People's Republic of China.
| | - Xiang Fang
- Technology Innovation Center of Mass Spectrometry for State Market Regulation, Center for Advanced Measurement Science, National Institute of Metrology, Beijing, 100029, People's Republic of China.
| | - Xinhua Dai
- Technology Innovation Center of Mass Spectrometry for State Market Regulation, Center for Advanced Measurement Science, National Institute of Metrology, Beijing, 100029, People's Republic of China.
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Cosma C, Galla L, Padoan A, Furlan G, Marchioro L, Zaninotto M, Basso D, Plebani M. SARS-CoV-2 specific T-cell humoral response assessment after COVID-19 vaccination using a rapid direct real-time PCR amplification. Clin Chem Lab Med 2023; 61:1652-1660. [PMID: 36957995 DOI: 10.1515/cclm-2023-0129] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Accepted: 03/01/2023] [Indexed: 03/25/2023]
Abstract
OBJECTIVES The SARS-CoV-2 immune response is mediated by both humoral and cellular immunity. In this study, SARS-CoV-2 specific cellular immunity was tested by a novel direct real-time PCR (dRT-PCR) assay, targeting mRNA of CXCL10, and compared with respect to an ELISA measuring interferon gamma (IFN-γ) release. METHODS Whole blood (Li-He) and serum samples were collected from 92 healthcare workers (HCW), with three doses of homologous (Pfizer/BioNTech, n=74) or heterologous (Pfizer/BioNTech and Vaxzevria or Moderna, n=18) vaccinations. Li-He samples were incubated with SCV2 PANEL-1-T-ACTIVATION (Hyris srl, Lodi, Italy), or CoV-2 IGRA TUBE ELISA (Euroimmune, Lubeck, Germany). CXCL10 mRNA expression was analyzed by bCube/bApp (Hyris), while IFN-γ was evaluated by quant-T-Cell SARS-CoV-2 ELISA (Euroimmune). Anti-SARS-CoV-2 S-RBD IgG levels were measured in sera using a CLIA assay (Snibe, Shenzen, China). RESULTS Imprecision of dRT-PCR assay was found to be satisfactory, and the two methods for measuring T cell immunity to SARS-CoV-2 peptides agreed in 82/87 (94.2%) of results. At qualitative dRT-PCR analyses, 81 subjects (93.2%) resulted as reactive to SARS-CoV-2 peptides, 3 (3.4%) were borderline and 3 were negative (3.4%). At univariate and multivariate analyses of quantitative dRT-PCR mRNA of CXCL10 and IFN-γ release results showed no difference between HCW with previous infection, homologous/heterologous vaccination, or demographical features. Anti-SARS-CoV-2 S-RBD IgG was associated with the previous infection and the time between the last vaccination or positivity. CONCLUSIONS Direct RT-PCR appeared accurate for determining the presence or absence of immunoreactivity of SARS-CoV-2 specific T cells, especially when rapid analyses are required, such as for organ transplantation.
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Affiliation(s)
- Chiara Cosma
- Laboratory Medicine Unit, University-Hospital of Padova, Padova, Italy
- QI.LAB.MED., Spin-off of the University of Padova, Padova, Italy
| | - Luisa Galla
- Laboratory Medicine Unit, University-Hospital of Padova, Padova, Italy
- QI.LAB.MED., Spin-off of the University of Padova, Padova, Italy
| | - Andrea Padoan
- Laboratory Medicine Unit, University-Hospital of Padova, Padova, Italy
- QI.LAB.MED., Spin-off of the University of Padova, Padova, Italy
- Department of Medicine-DIMED, University-Hospital of Padova, Padova, Italy
| | - Giulia Furlan
- QI.LAB.MED., Spin-off of the University of Padova, Padova, Italy
- Department of Medicine-DIMED, University-Hospital of Padova, Padova, Italy
| | - Lucio Marchioro
- QI.LAB.MED., Spin-off of the University of Padova, Padova, Italy
| | - Martina Zaninotto
- Laboratory Medicine Unit, University-Hospital of Padova, Padova, Italy
- QI.LAB.MED., Spin-off of the University of Padova, Padova, Italy
| | - Daniela Basso
- Laboratory Medicine Unit, University-Hospital of Padova, Padova, Italy
- QI.LAB.MED., Spin-off of the University of Padova, Padova, Italy
- Department of Medicine-DIMED, University-Hospital of Padova, Padova, Italy
| | - Mario Plebani
- QI.LAB.MED., Spin-off of the University of Padova, Padova, Italy
- Department of Medicine-DIMED, University-Hospital of Padova, Padova, Italy
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Tatsi EB, Filippatos F, Dellis C, Dourdouna MM, Syriopoulou V, Michos A. Kinetics of SARS-CoV-2 Spike Antibodies after the Second and Third Dose of the BNT162b2 COVID-19 Vaccine and Association with Epidemiological Characteristics and Breakthrough Infection in a Cohort Study of Healthcare Workers. Microorganisms 2023; 11:2010. [PMID: 37630570 PMCID: PMC10458561 DOI: 10.3390/microorganisms11082010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 07/25/2023] [Accepted: 08/02/2023] [Indexed: 08/27/2023] Open
Abstract
To prospectively study the kinetics of immune responses after immunization with the BNT162b2 mRNA COVID-19 vaccine and their association with epidemiological parameters and breakthrough infection (BI), we measured total (TAbs-WT) and neutralizing antibodies against wild-type (NAbs-WT) and Omicron (NAbs-O) SARS-CoV-2 spike proteins in healthcare workers (HCWs) after the second (4 and 8 months) and third dose (1 and 8 months). Vaccinated HCWs (n = 486), with a median age (IQR) of 49 years (38-56), were included in this prospective cohort study. BI was observed 4 and 8 months after the second dose in 8/486 (1.6%) and 15/486 (3.1%) HCWs, respectively, and 1 and 8 months after the third dose in 17/486 (3.5%) and 152/486 (31.3%) HCWs, respectively. A comparison of immune responses 1 month after the third dose in vaccinated HCWs without a BI or with a BI in the next 7 months did not detect any statistically significant differences in the TAbs-WT (median (IQR): 16,611.0 (13,011.0) U/mL vs. 17,572.5 (14,501.0) U/mL, p = 0.529) and NAbs-WT (median (IQR): 96.5% (1.7) vs. 96.7% (1.9), p = 0.555). After infection, HCWs with a BI had significantly increased TAbs-WT levels at all time points compared to healthy HCWs. The findings of the present study indicate that antibody levels after three doses of the BNT162b2 vaccine are not directly associated with the possibility of a BI.
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Affiliation(s)
- Elizabeth-Barbara Tatsi
- Infectious Diseases and Chemotherapy Research Laboratory, First Department of Pediatrics, Medical School, ‘Aghia Sophia’ Children’s Hospital, National and Kapodistrian University of Athens, 11527 Athens, Greece; (E.-B.T.); (V.S.)
- University Research Institute of Maternal and Child Health and Precision Medicine, 11527 Athens, Greece
| | - Filippos Filippatos
- Infectious Diseases and Chemotherapy Research Laboratory, First Department of Pediatrics, Medical School, ‘Aghia Sophia’ Children’s Hospital, National and Kapodistrian University of Athens, 11527 Athens, Greece; (E.-B.T.); (V.S.)
| | - Charilaos Dellis
- Infectious Diseases and Chemotherapy Research Laboratory, First Department of Pediatrics, Medical School, ‘Aghia Sophia’ Children’s Hospital, National and Kapodistrian University of Athens, 11527 Athens, Greece; (E.-B.T.); (V.S.)
| | - Maria-Myrto Dourdouna
- Infectious Diseases and Chemotherapy Research Laboratory, First Department of Pediatrics, Medical School, ‘Aghia Sophia’ Children’s Hospital, National and Kapodistrian University of Athens, 11527 Athens, Greece; (E.-B.T.); (V.S.)
| | - Vasiliki Syriopoulou
- Infectious Diseases and Chemotherapy Research Laboratory, First Department of Pediatrics, Medical School, ‘Aghia Sophia’ Children’s Hospital, National and Kapodistrian University of Athens, 11527 Athens, Greece; (E.-B.T.); (V.S.)
| | - Athanasios Michos
- Infectious Diseases and Chemotherapy Research Laboratory, First Department of Pediatrics, Medical School, ‘Aghia Sophia’ Children’s Hospital, National and Kapodistrian University of Athens, 11527 Athens, Greece; (E.-B.T.); (V.S.)
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Baratto N, Maistrello L, Pazienza E, Barresi R. Anti-SARS-CoV-2 IgG Antibody Response in Individuals Infected Post Complete Vaccination: A 6-Month Longitudinal Study in Healthcare Professionals. Vaccines (Basel) 2023; 11:1077. [PMID: 37376466 DOI: 10.3390/vaccines11061077] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 06/05/2023] [Accepted: 06/06/2023] [Indexed: 06/29/2023] Open
Abstract
Serological assays have been used to evaluate the magnitude of naturally acquired and BNT162b2 vaccine-induced immunity. In order to assess the extent to which the antibody response correlates with infection-mediated protection after vaccination, we investigated the kinetics of anti-SARS-CoV-2-S1 IgG in fully vaccinated healthy individuals who did or did not develop COVID-19 within 8 months after the booster dose. The anti-SARS-CoV-2-S1 receptor-binding, domain-specific IgG titer was assessed in serum samples collected at various intervals from 4 months after the second and 6 months after the third dose. The IgG level decreased 33% within 6 months after the second dose and, one month after the third dose, increased dramatically (>300%) compared with the pre-booster time point. COVID-19 infection within two months after the third dose did not cause significant IgG variation, but later viral infections elicited an IgG response similar to the initial response to the booster. The probability of developing COVID-19 and the severity of symptoms were not related to the antibody titer. Our data indicate that repeated exposure to viral antigens by either vaccination or infection at short-term intervals elicits limited boosting effects and that an IgG titer alone is not associated with the prediction of future infections and their symptomatology.
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Affiliation(s)
- Nicole Baratto
- Neurobiology Department, IRCCS San Camillo Hospital, Via Alberoni 70, 30126 Venice, Italy
| | | | - Elena Pazienza
- Neurobiology Department, IRCCS San Camillo Hospital, Via Alberoni 70, 30126 Venice, Italy
| | - Rita Barresi
- Neurobiology Department, IRCCS San Camillo Hospital, Via Alberoni 70, 30126 Venice, Italy
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8
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Rodríguez-Mora S, Pérez-Lamas L, Sainero MS, Torres M, Sánchez-Menéndez C, Corona M, Mateos E, Casado-Fernández G, Alcamí J, García-Pérez J, Pérez-Olmeda M, Murciano-Antón MA, López-Jiménez J, García-Gutiérrez V, Coiras M. Persistent Immunity against SARS-CoV-2 in Individuals with Oncohematological Diseases Who Underwent Autologous or Allogeneic Stem Cell Transplantation after Vaccination. Cancers (Basel) 2023; 15:cancers15082344. [PMID: 37190272 DOI: 10.3390/cancers15082344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 04/05/2023] [Accepted: 04/11/2023] [Indexed: 05/17/2023] Open
Abstract
The high morbimortality due to SARS-CoV-2 infection in oncohematological diseases (OHD) and hematopoietic stem cell transplant (HSCT) recipients in the pre-vaccine era has made vaccination a priority in this group. After HSCT, the immune responses against common vaccines such as tetanus, varicella, rubella, and polio may be lost. However, the loss of immunity developed by COVID-19 vaccination after HSCT has not been completely defined. In this study, both humoral and cellular immunity against SARS-CoV-2 were analyzed in 29 individuals with OHD who were vaccinated before receiving allogeneic (n = 11) or autologous (n = 18) HSCT. All participants had low but protective levels of neutralizing IgGs against SARS-CoV-2 after HSCT despite B-cell lymphopenia and immaturity. Although antibody-dependent cellular cytotoxicity was impaired, direct cellular cytotoxicity was similar to healthy donors in participants with autologous-HSCT, in contrast to individuals with allogeneic-HSCT, which severely deteriorated. No significant changes were observed in the immune response before and after HSCT. During follow-up, all reported post-HSCT SARS-CoV-2 infections were mild. This data emphasizes that COVID-19 vaccination is effective, necessary, and safe for individuals with OHD and also supports the persistence of some degree of immune protection after HSCT, at least in the short term, when patients cannot yet be revaccinated.
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Affiliation(s)
- Sara Rodríguez-Mora
- Immunopathology Unit, National Center of Microbiology, Instituto de Salud Carlos III, 28220 Madrid, Spain
- Biomedical Research Center Network in Infectious Diseases (CIBERINFEC), Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - Lucía Pérez-Lamas
- Hematology and Hemotherapy Service, Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Hospital Universitario Ramón y Cajal, 28034 Madrid, Spain
| | - Miriam Solera Sainero
- Immunopathology Unit, National Center of Microbiology, Instituto de Salud Carlos III, 28220 Madrid, Spain
| | - Montserrat Torres
- Immunopathology Unit, National Center of Microbiology, Instituto de Salud Carlos III, 28220 Madrid, Spain
- Biomedical Research Center Network in Infectious Diseases (CIBERINFEC), Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - Clara Sánchez-Menéndez
- Immunopathology Unit, National Center of Microbiology, Instituto de Salud Carlos III, 28220 Madrid, Spain
- Hematology and Hemotherapy Service, Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Hospital Universitario Ramón y Cajal, 28034 Madrid, Spain
- Faculty of Sciences, Universidad de Alcalá, 28801 Madrid, Spain
| | - Magdalena Corona
- Hematology and Hemotherapy Service, Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Hospital Universitario Ramón y Cajal, 28034 Madrid, Spain
- Faculty of Sciences, Universidad de Alcalá, 28801 Madrid, Spain
| | - Elena Mateos
- Immunopathology Unit, National Center of Microbiology, Instituto de Salud Carlos III, 28220 Madrid, Spain
- Biomedical Research Center Network in Infectious Diseases (CIBERINFEC), Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - Guiomar Casado-Fernández
- Immunopathology Unit, National Center of Microbiology, Instituto de Salud Carlos III, 28220 Madrid, Spain
- Faculty of Sciences, Universidad de Alcalá, 28801 Madrid, Spain
| | - José Alcamí
- Biomedical Research Center Network in Infectious Diseases (CIBERINFEC), Instituto de Salud Carlos III, 28029 Madrid, Spain
- AIDS Immunopathology Unit, National Center of Microbiology, Instituto de Salud Carlos III, 28220 Madrid, Spain
| | - Javier García-Pérez
- Biomedical Research Center Network in Infectious Diseases (CIBERINFEC), Instituto de Salud Carlos III, 28029 Madrid, Spain
- AIDS Immunopathology Unit, National Center of Microbiology, Instituto de Salud Carlos III, 28220 Madrid, Spain
| | - Mayte Pérez-Olmeda
- Biomedical Research Center Network in Infectious Diseases (CIBERINFEC), Instituto de Salud Carlos III, 28029 Madrid, Spain
- Serology Service, Instituto de Salud Carlos III, 28029 Madrid, Spain
| | | | - Javier López-Jiménez
- Hematology and Hemotherapy Service, Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Hospital Universitario Ramón y Cajal, 28034 Madrid, Spain
| | - Valentín García-Gutiérrez
- Hematology and Hemotherapy Service, Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS), Hospital Universitario Ramón y Cajal, 28034 Madrid, Spain
| | - Mayte Coiras
- Immunopathology Unit, National Center of Microbiology, Instituto de Salud Carlos III, 28220 Madrid, Spain
- Biomedical Research Center Network in Infectious Diseases (CIBERINFEC), Instituto de Salud Carlos III, 28029 Madrid, Spain
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Urso P, Cattaneo A, Pulvirenti S, Vercelli F, Cavallo DM, Carrer P. Early-phase pandemic in Italy: Covid-19 spread determinant factors. Heliyon 2023; 9:e15358. [PMID: 37041936 PMCID: PMC10079324 DOI: 10.1016/j.heliyon.2023.e15358] [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: 12/10/2022] [Revised: 04/02/2023] [Accepted: 04/04/2023] [Indexed: 04/13/2023] Open
Abstract
Although the Covid-19 pandemic is still ongoing, the environmental factors beyond virus transmission are only partially known. This statistical study has the aim to identify the key factors that have affected the virus spread during the early phase of pandemic in Italy, among a wide set of potential determinants concerning demographics, environmental pollution and climate. Because of its heterogeneity in pollution levels and climate conditions, Italy provides an ideal scenario for an ecological study. Moreover, the selected period excludes important confounding factors, as different virus variants, restriction policies or vaccines. The short-term relationship between the infection maximum increase and demographic, pollution and meteo-climatic parameters was investigated, including both winter-spring and summer 2020 data, also focusing separately on the two seasonal periods and on North vs Centre-South. Among main results, the importance of population size confirmed social distancing as a key management option. The pollution hazardous role undoubtedly emerged, as NO2 affected infection increase in all the studied scenarios, PM2.5 manifested its impact in North of Italy, while O3 always showed a protective action. Whereas higher temperatures were beneficial, especially in the cold season with also wind and relative humidity, solar irradiance was always relevant, revealing several significant interactions with other co-factors. Presented findings address the importance of the environment in Sars-CoV-2 spread and indicated that special carefulness should be taken in crowded areas, especially if they are highly polluted and weakly exposed to sun. The results suggest that containment of future epidemics similar to Covid-19 could be supported by reducing environmental pollution, achieving safer social habits and promoting preventive health care for better immune system response, as an only comprehensive strategy.
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Affiliation(s)
- Patrizia Urso
- Department of Biomedical and Clinical Sciences Hospital 'L. Sacco', University of Milan, Milano, Italy
- Department of Radiotherapy, Clinica Luganese Moncucco SA, Lugano, Switzerland
| | - Andrea Cattaneo
- Department of Science and High Technology, University of Insubria, Como, Italy
| | - Salvatore Pulvirenti
- Department of Biomedical and Clinical Sciences Hospital 'L. Sacco', University of Milan, Milano, Italy
| | - Franco Vercelli
- Department of Biomedical and Clinical Sciences Hospital 'L. Sacco', University of Milan, Milano, Italy
| | | | - Paolo Carrer
- Department of Biomedical and Clinical Sciences Hospital 'L. Sacco', University of Milan, Milano, Italy
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10
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Mochizuki T, Hori T, Yano K, Ikari K, Okazaki K. Changes in SARS-CoV-2 antibody titers 6 months after the booster dose of BNT162b2 COVID-19 vaccine among health care workers. Clin Exp Vaccine Res 2023; 12:116-120. [PMID: 37214144 PMCID: PMC10193111 DOI: 10.7774/cevr.2023.12.2.116] [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: 09/24/2022] [Revised: 01/09/2023] [Accepted: 03/31/2023] [Indexed: 05/24/2023] Open
Abstract
Purpose In Japan, the data on severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) antibody titers after the booster dose of the coronavirus disease 2019 (COVID-19) vaccine are insufficient. The aim of this study is to evaluate changes in SARS-CoV-2 antibody titers before, 1, 3, and 6 months after the booster dose of the BNT162b2 COVID-19 vaccine among health care workers. Materials and Methods A total of 268 participants who received the booster dose of the BNT162b2 vaccine were analyzed. SARS-CoV-2 antibody titers were measured before (baseline) and at 1, 3, and 6 months after the booster dose. Factors associated with changes in SARS-CoV-2 antibody titers at 1, 3, and 6 months were analyzed. Cutoff values at baseline were calculated to prevent infection of the omicron variant of COVID-19. Results The SARS-CoV-2 antibody titers at baseline, and 1, 3, and 6 months were 1,018.3 AU/mL, 21,396.5 AU/mL, 13,704.6 AU/mL, and 8,155.6 AU/mL, respectively. Factors associated with changes in SARS-CoV-2 antibody titers at 1 month were age and SARS-CoV-2 antibody titers at baseline, whereas changes in SARS-CoV-2 antibody titers at 3 and 6 months were associated with the SARS-CoV-2 antibody titers at 1 month. The cutoff values of the SARS-CoV-2 antibody titers at baseline were 515.4 AU/mL and 13,602.7 AU/mL at baseline and 1 month after the booster dose, respectively. Conclusion This study showed that SARS-CoV-2 antibody titers increase rapidly at 1 month after the booster dose of the BNT162b2 vaccine and begin to decrease from 1 to 6 months. Hence, another booster may be needed as soon as possible to prevent infection.
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Affiliation(s)
- Takeshi Mochizuki
- Department of Rheumatology and Orthopedic Surgery, Kamagaya General Hospital, Kamagaya, Japan
| | - Takaki Hori
- Department of Cardiovascular Surgery, Kamagaya General Hospital, Kamagaya, Japan
| | - Koichiro Yano
- Department of Orthopedic Surgery, Tokyo Women’s Medical University, Tokyo, Japan
| | - Katsunori Ikari
- Department of Orthopedic Surgery, Tokyo Women’s Medical University, Tokyo, Japan
| | - Ken Okazaki
- Department of Orthopedic Surgery, Tokyo Women’s Medical University, Tokyo, Japan
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Widysanto A, Prasetya IB, Meriyanti T, Sungono V, Setiawan DL, Gunawan E, Adiputra B, Lorens JO, Santi T, Pradhana CML, Yusuf I, Gunawan C. The risk factors of SARS-CoV-2 antibody level differences in healthcare workers post vaccination in Siloam hospitals: A nationwide multicenter study. INFECTIOUS MEDICINE 2022; 1:229-235. [PMID: 38013914 PMCID: PMC9581641 DOI: 10.1016/j.imj.2022.10.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 09/14/2022] [Accepted: 10/13/2022] [Indexed: 11/06/2022]
Abstract
Background Several vaccines have been approved against COVID-19, and 5 have been used in Indonesia. Due to the decrease in antibody levels 3 to 6 months after the second dose of CoronaVac, healthcare workers received the third booster of mRNA vaccine (mRNA-1273) to increase the antibody level. This study aimed to evaluate the risk factors of anti-S-RBD IgG levels differences in healthcare workers. Methods This study is a retrospective cohort study of 576 healthcare workers without previous SARS-CoV-2 infection who received 2 doses of CoronaVac and the third dose of mRNA-1273 6 months after the second dose. Blood samples were obtained 2nd, 6th, 12th, and 24th weeks after the second dose of CoronaVac vaccine administration, with mRNA-1273 booster on week 20. Quantitative measurements of IgG antibodies were performed with Elecsys Anti-SARS-CoV-2 S immunoassay. We identify the baseline factors predicting post-vaccination antibody titers using univariate and multivariate linear regression analysis. Results This study comprised 576 participants aged 32 years old, 72.05% female, and 45.84% from high-risk occupation subgroups. The median antibodies titer level on the 2nd, 6th, 12th, and 24th weeks after the second vaccine dose administration were 40.99 u/mL, 42.01 u/mL, 54.78 u/mL, and 23,225 u/mL. Antibody levels trended highest in female and younger age group (20-29 years old). Conclusions The third dose of vaccine increased the quantitative SARS-CoV-2 spike IgG antibody titers and eliminated differences in antibodies titer by gender.
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Affiliation(s)
- Allen Widysanto
- Siloam Hospitals Lippo Village, Banten, Indonesia
- Faculty of Medicine, Pelita Harapan University, Banten, Indonesia
| | - Ignatius Bima Prasetya
- Siloam Hospitals Lippo Village, Banten, Indonesia
- Faculty of Medicine, Pelita Harapan University, Banten, Indonesia
| | | | - Veli Sungono
- Faculty of Medicine, Pelita Harapan University, Banten, Indonesia
| | | | - Edy Gunawan
- Clinical Research Department Siloam Hospitals Group, Banten, Indonesia
| | - Bayu Adiputra
- Clinical Research Department Siloam Hospitals Group, Banten, Indonesia
| | | | | | | | - Irawan Yusuf
- Mochtar Riady Institute for Nanotechnology, Banten, Indonesia
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12
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Favresse J, Douxfils J, Henry B, Lippi G, Plebani M. Clinical Chemistry and Laboratory Medicine celebrates 60 years – narrative review devoted to the contribution of the journal to the diagnosis of SARS-CoV-2. Clin Chem Lab Med 2022; 61:811-821. [PMID: 36420539 DOI: 10.1515/cclm-2022-1166] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Accepted: 11/16/2022] [Indexed: 11/25/2022]
Abstract
Abstract
This review is an integral part of the special issue for the 60 years of the journal Clinical Chemistry and Laboratory Medicine (CCLM). The aim of the review is to highlight the role of the clinical laboratory since the emergence of the “severe acute respiratory syndrome coronavirus 2” (SARS-CoV-2), which causes Coronavirus disease 2019 (COVID-19), with special focus on the contribution of the journal in generating knowledge in SARS-CoV-2 diagnosis. As of October 30, 2022, a total of 186 CCLM publications were dedicated to COVID-19. Of importance, major International Federation of Clinical Chemistry (IFCC) guidelines related to the diagnosis of COVID-19 were published in CCLM. Between early-2020 and late October 2022, COVID-19 publications represented around 27% of all articles in CCLM, highlighting the willingness of the editorial board to help the field in order to better describe and diagnose this new emerging disease. First launched in 1963 under the name “Zeitschrift für Klinische Chemie”, the Journal was entirely devoted to clinical chemistry in the strict sense. The various topics published in relation to COVID-19 including its diagnosis, its impact on biochemical or hematological measures, as well as biosafety measures, is the perfect example that shows that the journal has greatly diversified over time.
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Affiliation(s)
- Julien Favresse
- IFCC SARS-CoV-2 Variants Working Group , Verona , Italy
- Department of Laboratory Medicine , Clinique St-Luc Bouge , Namur , Belgium
- Department of Pharmacy , Namur Research Institute for Lifes Sciences, University of Namur , Namur , Belgium
| | - Jonathan Douxfils
- Department of Pharmacy , Namur Research Institute for Lifes Sciences, University of Namur , Namur , Belgium
- Qualiblood s.a. , Namur , Belgium
| | - Brandon Henry
- IFCC SARS-CoV-2 Variants Working Group , Verona , Italy
- Clinical Laboratory, Division of Nephrology and Hypertension, Cincinnati Children’s Hospital Medical Center , Cincinnati , OH , USA
| | - Giuseppe Lippi
- IFCC SARS-CoV-2 Variants Working Group , Verona , Italy
- Section of Clinical Biochemistry and School of Medicine, University of Verona , Verona , Italy
| | - Mario Plebani
- IFCC SARS-CoV-2 Variants Working Group , Verona , Italy
- Department of Laboratory Medicine , University-Hospital of Padova , Padova , Italy
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13
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Grassi T, Lobreglio G, Panico A, Rosato C, Zizza A, Lazzari R, Chicone M, Indino F, Bagordo F. Kinetics of Humoral Immunity against SARS-CoV-2 in Healthcare Workers after the Third Dose of BNT162b2 mRNA Vaccine. Vaccines (Basel) 2022; 10:vaccines10111948. [PMID: 36423043 PMCID: PMC9696835 DOI: 10.3390/vaccines10111948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 11/03/2022] [Accepted: 11/16/2022] [Indexed: 11/21/2022] Open
Abstract
Protection provided by COVID-19 vaccines is compromised due to waning immunity over time. This study aimed to assess the level of antibodies anti-S-RBD of SARS-CoV-2 in a cohort of healthcare workers before and, on average, one and four months after the third dose of the BNT162b2 vaccine. The determination of antibodies was carried out in serum samples using an electrochemiluminescence immunoassay (ECLIA). All 34 participants (10 males, 24 females, 19 participants <50 years old, 15 participants ≥50 years old) showed a significant antibody level increase after the booster dose. Subsequently, a significant decrease in the antibody concentration was observed, with a reduction of about 60% after 150 days from the booster. Six subjects were infected by SARS-CoV-2 after the booster and showed a significantly higher antibody concentration on average four months after the third dose compared to naïve ones. Male and female participants had a similar trend in the antibody decline, while older subjects, compared to the younger ones, had a slightly slower decrease, even if they developed a lower level of antibodies after the third dose. These findings support the importance of the booster dose and underline the need for surveillance programs to better understand the antibody kinetics and optimize vaccination strategies.
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Affiliation(s)
- Tiziana Grassi
- Department of Biological and Environmental Science and Technology, University of Salento, 73100 Lecce, Italy
| | - Giambattista Lobreglio
- Clinical Pathology and Microbiology Unit, Vito Fazzi General Hospital, 73100 Lecce, Italy
| | - Alessandra Panico
- Department of Biological and Environmental Science and Technology, University of Salento, 73100 Lecce, Italy
- Correspondence: (A.P.); (A.Z.)
| | - Chiara Rosato
- Clinical Pathology and Microbiology Unit, Vito Fazzi General Hospital, 73100 Lecce, Italy
| | - Antonella Zizza
- Institute of Clinical Physiology, National Research Council, 73100 Lecce, Italy
- Correspondence: (A.P.); (A.Z.)
| | - Roberta Lazzari
- Clinical Pathology and Microbiology Unit, Vito Fazzi General Hospital, 73100 Lecce, Italy
| | - Michele Chicone
- Clinical Pathology and Microbiology Unit, Vito Fazzi General Hospital, 73100 Lecce, Italy
| | - Floriano Indino
- Clinical Pathology and Microbiology Unit, Vito Fazzi General Hospital, 73100 Lecce, Italy
| | - Francesco Bagordo
- Department of Pharmacy—Pharmaceutical Sciences, University of Bari Aldo Moro, 70121 Bari, Italy
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Lau CS, Thundyil J, Oh MLH, Phua SK, Liang YL, Li Y, Huo J, Huang Y, Zhang B, Xu S, Aw TC. Neutralizing and Total/IgG Spike Antibody Responses Following Homologous CoronaVac vs. BNT162b2 Vaccination Up to 90 Days Post-Booster. Antibodies (Basel) 2022; 11:antib11040070. [PMID: 36412836 PMCID: PMC9680337 DOI: 10.3390/antib11040070] [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: 10/04/2022] [Revised: 10/21/2022] [Accepted: 11/04/2022] [Indexed: 11/09/2022] Open
Abstract
INTRODUCTION We documented the total spike antibody (S-Ab), IgG S-Ab and neutralizing antibody (N-Ab) responses of BNT162b2/CoronaVac vaccinees up to 90 days post-booster dose. METHODS We included 32 homologous regimen CoronaVac vaccinees and 136 BNT162b2 mRNA vaccinees. We tested their total S-Ab (Roche), IgG (Abbott) and N-Ab (Snibe) levels at set time points from January 2021 to April 2022. All subjects were deemed to be COVID-19-naïve either via clinical history (CoronaVac vaccinees) or nucleocapsid antibody testing (BNT162b2 vaccinees). RESULTS All antibodies peaked 20-30 days post-inoculation. In BNT162b2 vaccinees, all post-booster antibodies were significantly higher than second-dose peaks. In CoronaVac vaccinees, IgG showed no significant differences between peak third-/second-dose titers (difference of 56.0 BAU/mL, 95% CI of -17.1 to 129, p = 0.0894). The post-vaccination titers of all antibodies in BNT162b2 vaccinees were significantly higher than those in CoronaVac vaccinees at all time points. Post-booster, all antibodies declined in 90 days; the final total/IgG/N-Ab titers were 7536 BAU/mL, 1276 BAU/mL and 12.5 μg/mL in BNT162b2 vaccinees and 646 BAU/mL, 62.4 BAU/mL and 0.44 μg/mL in CoronaVac vaccinees. CONCLUSION The mRNA vaccine generated more robust total S-Ab, IgG and N-Ab responses after the second and third vaccinations.
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Affiliation(s)
- Chin Shern Lau
- Department of Laboratory Medicine, Changi General Hospital, Singapore 529889, Singapore
- Correspondence: ; Tel.: +65-68504927; Fax: +65-64269507
| | - John Thundyil
- Medical Affairs, Abbott, Singapore 189352, Singapore
| | - May Lin Helen Oh
- Department of Infectious Diseases, Changi General Hospital, Singapore 529889, Singapore
| | - Soon Kieng Phua
- Department of Laboratory Medicine, Changi General Hospital, Singapore 529889, Singapore
| | - Ya Li Liang
- Department of Laboratory Medicine, Changi General Hospital, Singapore 529889, Singapore
| | - Yanfeng Li
- GenScript Biotech (Singapore) Pte Ltd., Singapore 349248, Singapore
| | - Jianxin Huo
- Singapore Immunology Network, Agency for Science, Technology and Research, Singapore 138648, Singapore
| | - Yuhan Huang
- Singapore Immunology Network, Agency for Science, Technology and Research, Singapore 138648, Singapore
| | - Biyan Zhang
- Singapore Immunology Network, Agency for Science, Technology and Research, Singapore 138648, Singapore
| | - Shengli Xu
- Singapore Immunology Network, Agency for Science, Technology and Research, Singapore 138648, Singapore
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117599, Singapore
| | - Tar Choon Aw
- Department of Laboratory Medicine, Changi General Hospital, Singapore 529889, Singapore
- Department of Medicine, National University of Singapore, Singapore 117599, Singapore
- Academic Pathology Program, Duke-NUS Medical School, Singapore 169857, Singapore
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15
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Favresse J, Gillot C, Bayart J, David C, Simon G, Wauthier L, Closset M, Dogné J, Douxfils J. Vaccine-induced binding and neutralizing antibodies against Omicron 6 months after a homologous BNT162b2 booster. J Med Virol 2022; 95:e28164. [PMID: 36131356 PMCID: PMC9538323 DOI: 10.1002/jmv.28164] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 09/06/2022] [Accepted: 09/19/2022] [Indexed: 01/11/2023]
Abstract
Evidence about the long-term persistence of the booster-mediated immunity against Omicron is mandatory for pandemic management and deployment of vaccination strategies. A total of 155 healthcare professionals (104 COVID-19 naive and 51 with a history of SARS-CoV-2 infection) received a homologous BNT162b2 booster. Binding antibodies against the spike protein and neutralizing antibodies against Omicron were measured at several time points before and up to 6 months after the booster. Geometric mean titers of measured antibodies were correlated to vaccine efficacy (VE) against symptomatic disease. Compared to the highest response, a significant 10.2- and 11.5-fold decrease in neutralizing titers was observed after 6 months in participants with and without history of SARS-CoV-2 infection. A corresponding 2.5- and 2.9-fold decrease in binding antibodies was observed. The estimated T1/2 of neutralizing antibodies in participants with and without history of SARS-CoV-2 infection was 42 (95% confidence interval [CI]: 25-137) and 36 days (95% CI: 25-65). Estimated T1/2 were longer for binding antibodies: 168 (95% CI: 116-303) and 139 days (95% CI: 113-180), respectively. Both binding and neutralizing antibodies were strongly correlated to VE (r = 0.83 and 0.89). However, binding and neutralizing antibodies were modestly correlated, and a high proportion of subjects (36.7%) with high binding antibody titers (i.e., >8434 BAU/ml) did not have neutralizing activity. A considerable decay of the humoral response was observed 6 months after the booster, and was strongly correlated with VE. Our study also shows that commercial assays available in clinical laboratories might require adaptation to better predict neutralization in the Omicron era.
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Affiliation(s)
- Julien Favresse
- Department of Laboratory MedicineClinique St‐Luc BougeNamurBelgium,Department of Pharmacy, Namur Research Institute for LIfe SciencesUniversity of NamurNamurBelgium
| | - Constant Gillot
- Department of Pharmacy, Namur Research Institute for LIfe SciencesUniversity of NamurNamurBelgium
| | - Jean‐Louis Bayart
- Department of Laboratory MedicineClinique St‐PierreOttignies‐Louvain‐la‐NeuveBelgium
| | - Clara David
- Qualiblood s.a.Rue du Séminaire 20ANamurBelgium
| | - Germain Simon
- Department of Laboratory MedicineClinique St‐PierreOttignies‐Louvain‐la‐NeuveBelgium
| | - Loris Wauthier
- Department of Laboratory MedicineClinique St‐Luc BougeNamurBelgium
| | - Mélanie Closset
- Department of Laboratory MedicineUniversité catholique de Louvain, CHU UCL Namur, YvoirNamurBelgium
| | - Jean‐Michel Dogné
- Department of Pharmacy, Namur Research Institute for LIfe SciencesUniversity of NamurNamurBelgium
| | - Jonathan Douxfils
- Department of Pharmacy, Namur Research Institute for LIfe SciencesUniversity of NamurNamurBelgium,Qualiblood s.a.Rue du Séminaire 20ANamurBelgium
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16
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Kanai D, Wakui H, Haze T, Azushima K, Kinguchi S, Tsukamoto S, Kanaoka T, Urate S, Toya Y, Hirawa N, Kato H, Watanabe F, Hanaoka K, Hanaoka M, Mitsuhashi H, Yamaguchi S, Ohnishi T, Tamura K. SARS-CoV-2 spike protein antibody titers 6 months after SARS-CoV-2 mRNA vaccination among patients undergoing hemodialysis in Japan. Clin Exp Nephrol 2022; 26:988-996. [PMID: 35751753 PMCID: PMC9244285 DOI: 10.1007/s10157-022-02243-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 05/26/2022] [Indexed: 01/05/2023]
Abstract
BACKGROUND Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) vaccination is shown to prevent severe illness and death in hemodialysis (HD) patients, but the immune response to vaccines is reduced in this population. This study compared SARS-CoV-2 spike protein antibody titers between HD patients and healthy controls in Japan for up to 6 months following vaccination. METHODS A multi-institutional retrospective study at five clinics in Japan was conducted using 412 HD patients and 156 healthy controls who received two doses of the BNT162b2 (Pfizer-BioNTech) mRNA vaccine. Anti-SARS-CoV-2 spike protein S1 IgG antibody titers were measured at 1, 3, and 6 months after the second dose. The attenuation speed was calculated as slope (i.e., -β) using a linear mixed-effects model toward the log-transformed antibody titers. RESULTS The HD group had significantly lower month 1 antibody titers (Ab-titer-1) than the controls, and these remained lower through month 6 (95% CI: 2617.1 (1296.7, 5240.8) vs. 7285.4 (4403.9, 11,000.0) AU/mL at Ab-titer-1, and 353.4 (178.4, 656.3) vs. 812.0 (498.3, 1342.7) AU/mL at Ab-titer-6 (p < 0.001, respectively)). Lower log Ab-titer-1 levels in the HD group were significantly associated with a lower log Ab-titer-6 (0.90 [0.83, 0.97], p < 0.001). The -β values in the HD patients and healthy controls were -4.7 ± 1.1 and -4.7 ± 1.4 (year-1), respectively. CONCLUSION SARS-CoV-2 spike protein antibody titers were significantly lower in HD patients than in healthy controls at 1 (peak) and 6 months after the second vaccination. Low peak antibody titers contributed to low 6-month antibody titers.
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Affiliation(s)
- Daisuke Kanai
- Department of Medical Science and Cardiorenal Medicine, Graduate School of Medicine, Yokohama City University, 3-9 Fukuura, Kanazawa-ku, Yokohama, Kanagawa, 236-0004, Japan
| | - Hiromichi Wakui
- Department of Medical Science and Cardiorenal Medicine, Graduate School of Medicine, Yokohama City University, 3-9 Fukuura, Kanazawa-ku, Yokohama, Kanagawa, 236-0004, Japan
| | - Tatsuya Haze
- Center for Nobel and Exploratory Clinical Trials (Y-NEXT), Yokohama City University, Yokohama, Kanagawa, Japan
| | - Kengo Azushima
- Department of Medical Science and Cardiorenal Medicine, Graduate School of Medicine, Yokohama City University, 3-9 Fukuura, Kanazawa-ku, Yokohama, Kanagawa, 236-0004, Japan
| | - Sho Kinguchi
- Department of Medical Science and Cardiorenal Medicine, Graduate School of Medicine, Yokohama City University, 3-9 Fukuura, Kanazawa-ku, Yokohama, Kanagawa, 236-0004, Japan
| | - Shunichiro Tsukamoto
- Department of Medical Science and Cardiorenal Medicine, Graduate School of Medicine, Yokohama City University, 3-9 Fukuura, Kanazawa-ku, Yokohama, Kanagawa, 236-0004, Japan
| | - Tomohiko Kanaoka
- Department of Medical Science and Cardiorenal Medicine, Graduate School of Medicine, Yokohama City University, 3-9 Fukuura, Kanazawa-ku, Yokohama, Kanagawa, 236-0004, Japan
| | - Shingo Urate
- Department of Medical Science and Cardiorenal Medicine, Graduate School of Medicine, Yokohama City University, 3-9 Fukuura, Kanazawa-ku, Yokohama, Kanagawa, 236-0004, Japan
| | - Yoshiyuki Toya
- Department of Medical Science and Cardiorenal Medicine, Graduate School of Medicine, Yokohama City University, 3-9 Fukuura, Kanazawa-ku, Yokohama, Kanagawa, 236-0004, Japan
| | - Nobuhito Hirawa
- Department of Nephrology and Hypertension, Yokohama City University Medical Center, Yokohama, Kanagawa, Japan
| | - Hideaki Kato
- Infection Prevention and Control Department, Yokohama City University Hospital, Yokohama, Kanagawa, Japan
| | | | - Kanako Hanaoka
- Kohsaikai Kamioooka Jinsei Clinic, Yokohama, Kanagawa, Japan
| | - Masaaki Hanaoka
- Kohsaikai Kamioooka Jinsei Clinic, Yokohama, Kanagawa, Japan
| | | | | | | | - Kouichi Tamura
- Department of Medical Science and Cardiorenal Medicine, Graduate School of Medicine, Yokohama City University, 3-9 Fukuura, Kanazawa-ku, Yokohama, Kanagawa, 236-0004, Japan.
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Mancuso R, Agostini S, Citterio LA, Chiarini D, Santangelo MA, Clerici M. Systemic and Mucosal Humoral Immune Response Induced by Three Doses of the BNT162b2 SARS-CoV-2 mRNA Vaccines. Vaccines (Basel) 2022; 10:vaccines10101649. [PMID: 36298514 PMCID: PMC9610882 DOI: 10.3390/vaccines10101649] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 09/20/2022] [Accepted: 09/29/2022] [Indexed: 11/05/2022] Open
Abstract
BNT162b2 (BioNTech/Pfizer) was the first SARS-CoV-2 mRNA vaccine approved by the European Medicines Agency. We monitored the long-term humoral responses of healthcare workers (HCWs) who received three vaccine doses. A total of 59 healthcare workers were studied: 47 were never SARS-CoV-2-infected (naïve-HCWs), and 12 (infected-HCWs) recovered from COVID-19 before the first vaccine. Serum and saliva were collected at baseline (before the first dose), just before the second dose, 1, 3, 6, and 9 months after the second dose, and 10 days after the third vaccine. SARS-CoV-2-specific IgG and IgA were evaluated in serum and saliva, respectively, and the presence of neutralizing antibodies (NAb) was analyzed in serum. SARS-CoV-2-specific IgG peaked one month after the second vaccine in naïve-HCWs but right before this timepoint in infected-HCWs. IgG titers significantly decreased during follow-up and at month 9 were still detectable in 50% of naïve-HCWs and 90% of infected-HCWs. NAb were significantly decreased 6 months after the second vaccine in naïve-HCWs and 9 months after this dose in infected-HCWs. Salivary SARS-CoV-2-specific IgA titers were significantly higher in infected-HCWs and were undetectable 9 months after the second vaccine in 43% of the naïve-HCWs alone. The third vaccine greatly increased humoral IgG and mucosal IgA in both groups. Two BNT162b2 doses induced strong systemic and humoral immune responses; to note, these responses weakened over time, although they are more prolonged in individuals who had recovered from COVID-19. The third vaccine dose quickly boosts systemic and mucosal humoral responses.
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Affiliation(s)
- Roberta Mancuso
- IRCCS Fondazione Don Carlo Gnocchi ONLUS, 20148 Milan, Italy
| | - Simone Agostini
- IRCCS Fondazione Don Carlo Gnocchi ONLUS, 20148 Milan, Italy
- Correspondence: ; Tel.: +39-0240308375
| | | | - Debora Chiarini
- IRCCS Fondazione Don Carlo Gnocchi ONLUS, 20148 Milan, Italy
| | | | - Mario Clerici
- IRCCS Fondazione Don Carlo Gnocchi ONLUS, 20148 Milan, Italy
- Department of Pathophysiology and Transplantation, University of Milan, 20122 Milan, Italy
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18
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Collatuzzo G, Visci G, Violante FS, Porru S, Spiteri G, Monaco MGL, Larese Fillon F, Negro C, Janke C, Castelletti N, De Palma G, Sansone E, Mates D, Teodorescu S, Fabiánová E, Bérešová J, Vimercati L, Tafuri S, Abedini M, Ditano G, Asafo SS, Boffetta P. Determinants of anti-S immune response at 6 months after COVID-19 vaccination in a multicentric European cohort of healthcare workers – ORCHESTRA project. Front Immunol 2022; 13:986085. [PMID: 36248889 PMCID: PMC9559243 DOI: 10.3389/fimmu.2022.986085] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Accepted: 09/13/2022] [Indexed: 11/13/2022] Open
Abstract
BackgroundThe duration of immune response to COVID-19 vaccination is of major interest. Our aim was to analyze the determinants of anti-SARS-CoV-2 IgG titer at 6 months after 2-dose vaccination in an international cohort of vaccinated healthcare workers (HCWs).MethodsWe analyzed data on levels of anti-SARS-CoV-2 Spike antibodies and sociodemographic and clinical characteristics of 6,327 vaccinated HCWs from 8 centers from Germany, Italy, Romania and Slovakia. Time between 1st dose and serology ranged 150-210 days. Serological levels were log-transformed to account for the skewness of the distribution and normalized by dividing them by center-specific standard errors, obtaining standardized values. We fitted center-specific multivariate regression models to estimate the cohort-specific relative risks (RR) of an increase of 1 standard deviation of log antibody level and corresponding 95% confidence interval (CI), and finally combined them in random-effects meta-analyses.ResultsA 6-month serological response was detected in 99.6% of HCWs. Female sex (RR 1.10, 95%CI 1.00-1.21), past infection (RR 2.26, 95%CI 1.73-2.95) and two vaccine doses (RR 1.50, 95%CI 1.22-1.84) predicted higher IgG titer, contrary to interval since last dose (RR for 10-day increase 0.94, 95%CI 0.91-0.97) and age (RR for 10-year increase 0.87, 95%CI 0.83-0.92). M-RNA-based vaccines (p<0.001) and heterologous vaccination (RR 2.46, 95%CI 1.87-3.24, one cohort) were associated with increased antibody levels.ConclusionsFemale gender, young age, past infection, two vaccine doses, and m-RNA and heterologous vaccination predicted higher antibody level at 6 months. These results corroborate previous findings and offer valuable data for comparison with trends observed with longer follow-ups.
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Affiliation(s)
- Giulia Collatuzzo
- Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Giovanni Visci
- Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | | | - Stefano Porru
- Section of Occupational Medicine, Department of Diagnostics and Public Health, University of Verona, Verona, Italy
| | - Gianluca Spiteri
- Clinical Unit of Occupational Medicine, University Hospital of Verona, Verona, Italy
| | | | | | - Corrado Negro
- Unit of Occupational Medicine, University of Trieste, Trieste, Italy
| | - Christian Janke
- Division of Infectious Diseases and Tropical Medicine, Ludwig Maximilian University (LMU) Klinikum, Munich, Germany
| | - Noemi Castelletti
- Division of Infectious Diseases and Tropical Medicine, Ludwig Maximilian University (LMU) Klinikum, Munich, Germany
| | - Giuseppe De Palma
- Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, University of Brescia, Brescia, Italy
| | - Emanuele Sansone
- Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, University of Brescia, Brescia, Italy
| | - Dana Mates
- National Institute of Public Health, Bucharest, Romania
| | | | - Eleonóra Fabiánová
- Occupational Health Department, Regional Authority of Public Health, Banská Bystrica, Slovakia
| | - Jana Bérešová
- Epidemiology Department, Regional Authority of Public Health, Banská Bystrica, Slovakia
| | - Luigi Vimercati
- Interdisciplinary Department of Medicine, University of Bari, Bari, Italy
| | - Silvio Tafuri
- Interdisciplinary Department of Medicine, University of Bari, Bari, Italy
| | - Mahsa Abedini
- Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Giorgia Ditano
- Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Shuffield S. Asafo
- Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Paolo Boffetta
- Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
- Stony Brook Cancer Center, Stony Brook University, Stony Brook, NY, United States
- *Correspondence: Paolo Boffetta,
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19
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Lagousi T, Routsias J, Mavrouli M, Papadatou I, Geropeppa M, Spoulou V. Comparative Characterization of Human Antibody Response Induced by BNT162b2 Vaccination vs. SARS-CoV-2 Wild-Type Infection. Vaccines (Basel) 2022; 10:vaccines10081210. [PMID: 36016097 PMCID: PMC9416143 DOI: 10.3390/vaccines10081210] [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: 06/20/2022] [Revised: 07/16/2022] [Accepted: 07/26/2022] [Indexed: 11/30/2022] Open
Abstract
Humoral immunity after SARS-CoV-2 immunization or natural infection is thought to be evanescent. In our study, we aimed to longitudinally characterize the kinetics of antibody titers after dual BNT162b2 immunization or wild-type infection. Vaccinated and recovered individuals displayed distinct antibody kinetics, as convalescents had detectable RBD-, S1-specific, and neutralizing IgG antibody titers two weeks post-infection that gradually increased longitudinally, while RBD-, S1-specific, and neutralizing IgG were detected in vaccinees after the first dose, increased significantly 3 weeks post the second dose and decreased significantly 4–5 months thereafter. Neutralizing IgG was significantly higher initially in convalescent individuals; however, vaccines displayed significantly higher neutralizing antibodies 4–5 months post the second dose. In both groups, there was a strong negative association between elapsed time and antibody levels. The avidity of anti-RBD antibody titers increased significantly in patients longitudinally, while in vaccinees initially increased, with subsequent decrease, remaining however higher than antibody avidity of recovered individuals at all time-points. Anti-RBD antibodies were strongly correlated with neutralizing and anti-S1 antibodies in both groups at all time-points. This study facilitates our further understanding of immune response to SARS-CoV-2 and vaccines.
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Affiliation(s)
- Theano Lagousi
- Immunology and Vaccinology Research Laboratory and Infectious Diseases Department “MAKKA”, First Department of Paediatrics, “Aghia Sophia” Children’s Hospital, Athens Medical School, 11527 Athens, Greece; (I.P.); (M.G.); (V.S.)
- Athens Medical School, University Research Institute of Maternal and Child Health and Precision Medicine, National and Kapodistrian University of Athens, 11527 Athens, Greece
- Correspondence: ; Tel.: +30-21-07467620
| | - John Routsias
- Department of Microbiology, Athens Medical School, 11527 Athens, Greece; (J.R.); (M.M.)
| | - Maria Mavrouli
- Department of Microbiology, Athens Medical School, 11527 Athens, Greece; (J.R.); (M.M.)
| | - Ioanna Papadatou
- Immunology and Vaccinology Research Laboratory and Infectious Diseases Department “MAKKA”, First Department of Paediatrics, “Aghia Sophia” Children’s Hospital, Athens Medical School, 11527 Athens, Greece; (I.P.); (M.G.); (V.S.)
- Athens Medical School, University Research Institute of Maternal and Child Health and Precision Medicine, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Maria Geropeppa
- Immunology and Vaccinology Research Laboratory and Infectious Diseases Department “MAKKA”, First Department of Paediatrics, “Aghia Sophia” Children’s Hospital, Athens Medical School, 11527 Athens, Greece; (I.P.); (M.G.); (V.S.)
| | - Vana Spoulou
- Immunology and Vaccinology Research Laboratory and Infectious Diseases Department “MAKKA”, First Department of Paediatrics, “Aghia Sophia” Children’s Hospital, Athens Medical School, 11527 Athens, Greece; (I.P.); (M.G.); (V.S.)
- Athens Medical School, University Research Institute of Maternal and Child Health and Precision Medicine, National and Kapodistrian University of Athens, 11527 Athens, Greece
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20
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Infantino M, Manfredi M, Stacchini L, Cosma C, Grossi V, Lari B, Russo E, Amedei A, Benucci M, Veneziani F, Casprini P, Catalano CM, Cirrincione G, Bonaccorsi G, Pompetti A. The role of neutralizing antibodies by sVNT after two doses of BNT162b2 mRNA vaccine in a cohort of Italian healthcare workers. Clin Chem Lab Med 2022; 60:934-940. [PMID: 35303766 DOI: 10.1515/cclm-2022-0170] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Accepted: 02/25/2022] [Indexed: 12/14/2022]
Abstract
OBJECTIVES Evaluating anti-SARS-CoV-2 antibody levels is a current priority to drive immunization, as well as to predict when a vaccine booster dose may be required and for which priority groups. The aim of our study was to investigate the kinetics of anti-SARS-CoV-2 Spike S1 protein IgG (anti-S1 IgG) antibodies and neutralizing antibodies (NAbs) in an Italian cohort of healthcare workers (HCWs), following the Pfizer/BNT162b2 mRNA vaccine, over a period of up to six months after the second dose. METHODS We enrolled 57 HCWs, without clinical history of COVID-19 infection. Fluoroenzyme-immunoassay was used for the quantitative anti-S1 IgG antibodies at different time points T1 (one month), T3 (three months) and T6 (six months) following the second vaccine shot. Simultaneously, a commercial surrogate virus neutralization test (sVNT) was used for the determination of NAbs, expressed as inhibition percentage (% IH). RESULTS Median values of anti-S1 IgG antibodies decreased from T1 (1,452 BAU/mL) to T6 (104 BAU/mL) with a percent variation of 92.8% while the sVNT showed a percent variation of 34.3% for the same time frame. The decline in anti-S1 IgG antibodies from T1 to T6 was not accompanied by a loss of the neutralizing capacity of antibodies. In fact at T6 a neutralization percentage <20% IH was observed only in 3.51% of HCWs. CONCLUSIONS Our findings reveal that the decrease of anti-S1 IgG levels do not correspond in parallel to a decrease of NAbs over time, which highlights the necessity of using both assays to assess vaccination effectiveness.
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Affiliation(s)
- Maria Infantino
- Immunology and Allergology Laboratory Unit, S. Giovanni di Dio Hospital, Florence, Italy
| | - Mariangela Manfredi
- Immunology and Allergology Laboratory Unit, S. Giovanni di Dio Hospital, Florence, Italy
| | - Lorenzo Stacchini
- Department of Health Science, University of Florence, Florence, Italy
| | - Claudia Cosma
- Department of Health Science, University of Florence, Florence, Italy
| | - Valentina Grossi
- Immunology and Allergology Laboratory Unit, S. Giovanni di Dio Hospital, Florence, Italy
| | - Barbara Lari
- Immunology and Allergology Laboratory Unit, S. Giovanni di Dio Hospital, Florence, Italy
| | - Edda Russo
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Amedeo Amedei
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | | | - Francesca Veneziani
- Clinical Pathology Laboratory Unit, S. Giovanni di Dio Hospital, Florence, Italy
| | - Patrizia Casprini
- Clinical Pathology Laboratory Unit, S. Giovanni di Dio Hospital, Florence, Italy
| | - Cateno Mario Catalano
- Department of Technical Health Services, Preventive Medicine, S. Giovanni di Dio Hospital, Florence, Italy
| | - Giuseppe Cirrincione
- Department of Technical Health Services, Preventive Medicine, S. Giovanni di Dio Hospital, Florence, Italy
| | | | - Adolfo Pompetti
- SOC Clinical Assistance Governance, SOS Preventive Medicine Unit, S. Giovanni di Dio Hospital, Florence, Italy
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21
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Lo Sasso B, Agnello L, Giglio RV, Gambino CM, Ciaccio AM, Vidali M, Ciaccio M. Longitudinal analysis of anti-SARS-CoV-2 S-RBD IgG antibodies before and after the third dose of the BNT162b2 vaccine. Sci Rep 2022; 12:8679. [PMID: 35606426 PMCID: PMC9126106 DOI: 10.1038/s41598-022-12750-z] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Accepted: 05/12/2022] [Indexed: 12/20/2022] Open
Abstract
Immunosurveillance by evaluating anti-spike protein receptor-binding domain (S-RBD) antibodies represents a useful tool to estimate the long immunity against Severe Acute Respiratory Syndrome CoronaVirus 2 (SARS-CoV-2) infection. The aim of this study was to evaluate the kinetics of antibody response in vaccine recipients. We measured anti-S-RBD IgG levels by indirect chemiluminescence immunoassay on Maglumi 800 (SNIBE, California) in 1013 healthy individuals naïve to SARS-CoV2 infection after two and three COVID-19 vaccine doses. We found that anti-S-RBD IgG levels are higher in females than males. Antibody levels gradually decrease to a steady state after four months since the peak, and the decay is independent of age, sex, vaccine doses, and baseline antibodies titer. The third dose induces a high anti-S-RBD IgG reactivity in individuals with previous high responses and triggers a moderate-high anti-S-RBD IgG reactivity. The assessment of anti-S-RBD IgG levels is essential for monitoring long-term antibody response. A third SARS-CoV-2 vaccine dose is associated with a significant immunological response. Thus, our results support the efficacy of the vaccine programs and the usefulness of the third dose.
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Affiliation(s)
- Bruna Lo Sasso
- Department of Biomedicine, Neurosciences and Advanced Diagnostics, Institute of Clinical Biochemistry, Clinical Molecular Medicine and Clinical Laboratory Medicine, University of Palermo, 90127, Palermo, Italy
- Department of Laboratory Medicine, Azienda Ospedaliera Universitaria Policlinico "P. Giaccone", 90127, Palermo, Italy
| | - Luisa Agnello
- Department of Biomedicine, Neurosciences and Advanced Diagnostics, Institute of Clinical Biochemistry, Clinical Molecular Medicine and Clinical Laboratory Medicine, University of Palermo, 90127, Palermo, Italy
| | - Rosaria Vincenza Giglio
- Department of Biomedicine, Neurosciences and Advanced Diagnostics, Institute of Clinical Biochemistry, Clinical Molecular Medicine and Clinical Laboratory Medicine, University of Palermo, 90127, Palermo, Italy
- Department of Laboratory Medicine, Azienda Ospedaliera Universitaria Policlinico "P. Giaccone", 90127, Palermo, Italy
| | - Caterina Maria Gambino
- Department of Biomedicine, Neurosciences and Advanced Diagnostics, Institute of Clinical Biochemistry, Clinical Molecular Medicine and Clinical Laboratory Medicine, University of Palermo, 90127, Palermo, Italy
- Department of Laboratory Medicine, Azienda Ospedaliera Universitaria Policlinico "P. Giaccone", 90127, Palermo, Italy
| | - Anna Maria Ciaccio
- Unit of Clinical Biochemistry, University of Palermo, 90127, Palermo, Italy
| | - Matteo Vidali
- Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, 20122, Milan, Italy
| | - Marcello Ciaccio
- Department of Biomedicine, Neurosciences and Advanced Diagnostics, Institute of Clinical Biochemistry, Clinical Molecular Medicine and Clinical Laboratory Medicine, University of Palermo, 90127, Palermo, Italy.
- Department of Laboratory Medicine, Azienda Ospedaliera Universitaria Policlinico "P. Giaccone", 90127, Palermo, Italy.
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22
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Ciniselli CM, Lecchi M, Figini M, Melani CC, Daidone MG, Morelli D, Zito E, Apolone G, Verderio P. COVID-19 Vaccination in Health Care Workers in Italy: A Literature Review and a Report from a Comprehensive Cancer Center. Vaccines (Basel) 2022; 10:vaccines10050734. [PMID: 35632490 PMCID: PMC9146113 DOI: 10.3390/vaccines10050734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 04/28/2022] [Accepted: 05/05/2022] [Indexed: 02/04/2023] Open
Abstract
The coronavirus disease 2019 pandemic still represents a global public health emergency, despite the availability of different types of vaccines that reduced the number of severe cases, the hospitalization rate and mortality. The Italian Vaccine Distribution Plan identified healthcare workers (HCWs) as the top-priority category to receive access to a vaccine and different studies on HCWs have been implemented to clarify the duration and kinetics of antibody response. The aim of this paper is to perform a literature review across a total of 44 studies of the serologic response to COVID-19 vaccines in HCWs in Italy and to report the results obtained in a prospective longitudinal study implemented at the Fondazione IRCCS Istituto Nazionale Tumori (INT) of Milan on 1565 HCWs. At INT we found that 99.81% of the HCWs developed an antibody response one month after the second dose. About six months after the first serology evaluation, 100% of the HCWs were still positive to the antibody, although we observed a significant decrease in its levels. Overall, our literature review results highlight a robust antibody response in most of the HCWs after the second vaccination dose. These figures are also confirmed in our institutional setting seven months after the completion of the cycle of second doses of vaccination.
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Affiliation(s)
- Chiara Maura Ciniselli
- Bioinformatics and Biostatistics Unit, Department of Applied Research and Technological Development, Fondazione IRCCS Istituto Nazionale dei Tumori, 20133 Milan, Italy; (C.M.C.); (M.L.)
| | - Mara Lecchi
- Bioinformatics and Biostatistics Unit, Department of Applied Research and Technological Development, Fondazione IRCCS Istituto Nazionale dei Tumori, 20133 Milan, Italy; (C.M.C.); (M.L.)
| | - Mariangela Figini
- Biomarker Unit, Department of Applied Research and Technological Development, Fondazione IRCCS Istituto Nazionale dei Tumori, 20133 Milan, Italy;
| | - Cecilia C. Melani
- Scientific Directorate, Fondazione IRCCS Istituto Nazionale dei Tumori, 20133 Milan, Italy; (C.C.M.); (M.G.D.); (G.A.)
| | - Maria Grazia Daidone
- Scientific Directorate, Fondazione IRCCS Istituto Nazionale dei Tumori, 20133 Milan, Italy; (C.C.M.); (M.G.D.); (G.A.)
| | - Daniele Morelli
- Laboratory Medicine, Department of Pathology, Fondazione IRCCS Istituto Nazionale dei Tumori, 20133 Milan, Italy;
| | - Emanuela Zito
- ICT, Fondazione IRCCS Istituto Nazionale dei Tumori, 20133 Milan, Italy;
| | - Giovanni Apolone
- Scientific Directorate, Fondazione IRCCS Istituto Nazionale dei Tumori, 20133 Milan, Italy; (C.C.M.); (M.G.D.); (G.A.)
| | - Paolo Verderio
- Bioinformatics and Biostatistics Unit, Department of Applied Research and Technological Development, Fondazione IRCCS Istituto Nazionale dei Tumori, 20133 Milan, Italy; (C.M.C.); (M.L.)
- Correspondence:
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23
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Filchtinski D, Sundberg M, Berthold H, Steller L, Kayser J, Holz S, Hinze M, Braeutigam O, Schulte-Pelkum J, Fiedler R. Application of the SARS-CoV-2-S1 ACE-2 receptor interaction as the basis of the fully automated assay to detect neutralizing SARS-CoV-2-S1 antibodies in blood samples. J Immunol Methods 2022; 504:113258. [PMID: 35304119 PMCID: PMC8923036 DOI: 10.1016/j.jim.2022.113258] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 03/11/2022] [Accepted: 03/11/2022] [Indexed: 12/16/2022]
Abstract
A quantitative, high throughput, fully automated diagnostic method for the detection of neutralizing anti-SARS-CoV-2 antibodies was developed on the Phadia system based on the interaction of SARS-CoV-2 S1 protein and the human ACE-2 receptor. This method was compared to the current state of the art plaque reduction neutralization test (PRNT) and a high correlation between the two methods was observed. Using a large cohort of blood samples from convalescent patients and controls the method displays very high sensitivity and specificity (99,8% and 99.99%, respectively). Neutralizing antibody titers of mRNA-1273 and BNT162b2-vaccinated persons can also be quantified with this method as well. This fully automated method provides the possibility to determine anti-SARS-CoV-2 neutralizing antibody concentrations in just 2 h.
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Affiliation(s)
| | | | - Heike Berthold
- Assay Design, Thermo Fisher Scientific, Freiburg, Germany
| | - Laura Steller
- Assay Design, Thermo Fisher Scientific, Freiburg, Germany
| | - José Kayser
- Assay Design, Thermo Fisher Scientific, Freiburg, Germany
| | - Sanja Holz
- Assay Design, Thermo Fisher Scientific, Freiburg, Germany
| | - Mario Hinze
- Assay Design, Thermo Fisher Scientific, Freiburg, Germany
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Padoan A, Cosma C, Della Rocca F, Barbaro F, Santarossa C, Dall'Olmo L, Galla L, Cattelan A, Cianci V, Basso D, Plebani M. A cohort analysis of SARS-CoV-2 anti-spike protein receptor binding domain (RBD) IgG levels and neutralizing antibodies in fully vaccinated healthcare workers. Clin Chem Lab Med 2022; 60:1110-1115. [PMID: 35473824 DOI: 10.1515/cclm-2022-0322] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Accepted: 04/13/2022] [Indexed: 01/01/2023]
Abstract
OBJECTIVES The waning of humoral immunity after COVID-19 vaccine booster (third dose) has not yet been fully evaluated. This study updates data on anti-SARS-CoV-2 spike protein receptor binding domain (S-RBD) binding antibodies (bAb) and neutralizing antibodies (NAb) levels in individuals with homologous vaccination 3-4 months after receiving the booster dose. METHODS Fifty-five healthcare workers (HCW) from Padova University-Hospital were asked to collect serum samples for determining antibodies (Ab) at 12 (t12) and 28 (t28) days, at 6 months (t6m) after their first Comirnaty/BNT162b2 inoculation, and 3-4 months after receiving the 3rd homologous booster dose. HCW were monitored weekly for SARS-CoV-2 infection. Ab titers were measured by two chemiluminescent immunoassays, one targeting the S-RBD immunoglobulin G (IgG), and one surrogate viral neutralization test (sVNT), measuring NAb. RESULTS Twenty of the HCW had natural COVID-19 infection (COVID+) at different times, before either the first or the second vaccination. Median S-RBD IgG and NAb levels and their interquartile ranges 3-4 months after the 3rd dose were 1,076 (529-3,409) kBAU/L and 15.8 (11.3-38.3) mg/L, respectively, for COVID-, and 1,373 (700-1,373) kBAU/L and 21 (12.8-53.9) mg/L, respectively, for COVID+. At multivariate regression analyses, with age and gender included as covariates, S-RBD IgG bAb and sVNT NAb levels were closely associated with the time interval between serological determination and the 3rd vaccine dose (log10 _coeff=-0.013, p=0.012 and log10 _coeff=-0.010, p=0.025) for COVID+, whereas no such association was found in COVID- individuals. CONCLUSIONS The third booster dose increases anti-SARS-CoV-2 Ab levels, elevated levels persisting for up to 3-4 months. Waning of Ab levels appears to be less pronounced for COVID+ individuals.
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Affiliation(s)
- Andrea Padoan
- Department of Medicine - DIMED, University of Padova, Padova, Italy.,Department of Laboratory Medicine, University-Hospital of Padova, Padova, Italy
| | - Chiara Cosma
- Department of Laboratory Medicine, University-Hospital of Padova, Padova, Italy
| | | | - Francesco Barbaro
- Unit of Infectious and Tropical Diseases, University-Hospital of Padova, Padova, Italy
| | | | - Luigi Dall'Olmo
- Department of Surgical Oncological and Gastroenterological Sciences - DISCOG, University of Padova, Padova, Italy.,Veneto Institute of Oncology, IOV-IRCCS, Padova, Italy
| | - Luisa Galla
- Department of Laboratory Medicine, University-Hospital of Padova, Padova, Italy
| | - Annamaria Cattelan
- Unit of Infectious and Tropical Diseases, University-Hospital of Padova, Padova, Italy
| | - Vito Cianci
- Unit of Infectious and Tropical Diseases, University-Hospital of Padova, Padova, Italy
| | - Daniela Basso
- Department of Medicine - DIMED, University of Padova, Padova, Italy.,Department of Laboratory Medicine, University-Hospital of Padova, Padova, Italy
| | - Mario Plebani
- Department of Medicine - DIMED, University of Padova, Padova, Italy.,Department of Laboratory Medicine, University-Hospital of Padova, Padova, Italy
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25
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Evaluation of Natural and Vaccine-Induced Anti-SARS-CoV-2 Immunity: A Comparative Study between Different Groups of Volunteers. Diseases 2022; 10:diseases10020025. [PMID: 35645246 PMCID: PMC9149979 DOI: 10.3390/diseases10020025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 04/20/2022] [Accepted: 04/22/2022] [Indexed: 12/14/2022] Open
Abstract
(1) Background: The production of anti-SARS-CoV-2 antibodies should help minimize the severity of COVID-19 disease. Our focus was to investigate and compare different vaccination schedules, monitoring circulating S-RBD Ab (antibodies anti—Spike protein—Receptor Binding Domain) levels after administering two doses in naïve patients. Likewise, vaccine-stimulated immunity in naïve and previously infected patients was compared. (2) Methods: We included 392 patients. Sera were evaluated by Elecsys anti-SARS-CoV-2 S. Statistical analyses were conducted by MedCalc and JASP. (3) Results: In COVID-19 patients, the median value of Ab levels was 154 BAU/mL, stable up to 9 months after the infection. From the data observed in vaccinated patients, higher median values were recorded in COVID-19/Pfizer BioNTech (18913 BAU/mL) than in other groups (Pfizer BioNTech: 1841; ChadOx1 961; heterologous vaccination: 2687) BAU/mL. (4) Conclusions: In conclusion, a single booster dose given to previously infected patients raised an antibody response much higher than two doses given to naïve individuals and heterologous vaccination generated a robust persistent antibody response at high levels, steady up to three months after administration.
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Mochizuki T, Hori T, Yano K, Ikari K, Okazaki K. Factors Associated with Change in SARS-CoV-2 Antibody Titers from Three to Six Months after the Administration of the BNT162b2 mRNA COVID-19 Vaccine among Healthcare Workers in Japan: A Prospective Study. Intern Med 2022; 61:1139-1143. [PMID: 35185050 PMCID: PMC9107982 DOI: 10.2169/internalmedicine.8902-21] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Accepted: 01/05/2022] [Indexed: 01/07/2023] Open
Abstract
Objective We evaluated the change in severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) antibody titers from three to six months after the administration of the BNT162b2 vaccine among healthcare workers. Methods A total of 337 healthcare workers who received 2 doses of the BNT162b2 vaccine were included in this study. Factors associated with SARS-CoV-2 antibody titers at three and six months and the change in SARS-CoV-2 antibody titers between three and six months after vaccine administration were analyzed using a logistic regression analysis. Results The SARS-CoV-2 antibody titer at 3 months was 4,812.1±3,762.9 AU/mL in all subjects and was lower in older workers than in younger ones. The SARS-CoV-2 antibody titer at 6 months was 1,368.9±1,412.3 AU/mL in all subjects. The SARS-CoV-2 antibody titers that were found to be high at three months were also high at six months. The change in SARS-CoV-2 antibody titers from 3 to 6 months was -68.9%±16.1%. The higher SARS-CoV-2 antibody titers at three months showed a more marked decrease from three to six months than lower titers. Conclusion This study demonstrates that SARS-CoV-2 antibody titers at three months decreased with age and were associated with the antibody titers at six months and the change in titer from three to six months. Older individuals in particular need to be aware of the declining SARS-CoV-2 antibody titers at six months after the BNT162b2 vaccine. The results of this study may provide insight into COVID-19 vaccine booster strategies.
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Affiliation(s)
- Takeshi Mochizuki
- Department of Rheumatology and Orthopedic Surgery, Kamagaya General Hospital, Japan
| | - Takaki Hori
- Department of Cardiovascular Surgery, Kamagaya General Hospital, Japan
| | - Koichiro Yano
- Department of Orthopedic Surgery, Tokyo Women's Medical University, Japan
| | - Katsunori Ikari
- Department of Orthopedic Surgery, Tokyo Women's Medical University, Japan
| | - Ken Okazaki
- Department of Orthopedic Surgery, Tokyo Women's Medical University, Japan
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Sanna G, Marongiu A, Firinu D, Piras C, Franci G, Galdiero M, Pala G, Palmas V, Angius F, Littera R, Perra A, Orrù G, Campagna M, Costanzo G, Meloni F, Coghe F, Chessa L, Manzin A. Neutralizing Antibodies Responses against SARS-CoV-2 in a Sardinian Cohort Group Up to 9 Months after BNT162b2 Vaccination. Vaccines (Basel) 2022; 10:vaccines10040531. [PMID: 35455280 PMCID: PMC9024419 DOI: 10.3390/vaccines10040531] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 03/26/2022] [Accepted: 03/27/2022] [Indexed: 12/19/2022] Open
Abstract
Severe acute respiratory syndrome-related coronavirus 2 (SARS-CoV-2), the etiological agent of COVID-19, has caused over 460 million cases of infection and over 6 million deaths worldwide. The pandemic has called for science, technology, and innovation to provide solutions and, due to an incredible scientific and financial global effort, several prophylactic and therapeutic apparatuses such as monoclonal antibodies and vaccines were developed in less than one year to address this emergency. After SARS-CoV-2 infection, serum neutralizing antibodies are produced by B cells and studies on virus-neutralizing antibodies’ kinetics are pivotal. The process of protective immunity and the duration of this kind of protection against COVID-19 remain to be clarified. We tested 136 sera from 3 groups of individuals, some of them providing multiple sequential sera (1—healthy, no previous CoV2-infected, vaccinated; 2—healthy, previous CoV2 infected, vaccinated; 3—healed, previous CoV2-infected, not vaccinated) to assess the kinetics of antibodies (Abs) neutralizing activity. We found that SARS-CoV-2 infection elicits moderate neutralizing antibody activity in most individuals; neither age nor gender appear to have any influence on Abs responses. The BNT162b2 vaccine, when administered in two doses, induces high antibodies titre endowed with potent neutralizing activity against bare SARS-CoV-2 in in vitro neutralizing assay. The residual neutralization capability and the kinetic of waning immunity were also evaluated over 9 months after the second dose in a reference group of subjects. Neutralization titre showed a decline in all subjects and the median level of S-protein IgG, over 270 days after the second vaccination dose, was below 10 AU/mL in 53% of serum tested.
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Affiliation(s)
- Giuseppina Sanna
- Microbiology and Virology Unit, Department of Biomedical Sciences, University of Cagliari, 09042 Monserrato, Italy; (A.M.); (G.P.); (V.P.); (F.A.); (A.M.)
- Correspondence: (G.S.); (D.F.)
| | - Alessandra Marongiu
- Microbiology and Virology Unit, Department of Biomedical Sciences, University of Cagliari, 09042 Monserrato, Italy; (A.M.); (G.P.); (V.P.); (F.A.); (A.M.)
- Department of Biomedical Sciences, University of Sassari, 07100 Sassari, Italy
| | - Davide Firinu
- Department of Medical Sciences and Public Health, University of Cagliari, 09042 Monserrato, Italy; (G.O.); (M.C.); (G.C.); (F.M.); (L.C.)
- Correspondence: (G.S.); (D.F.)
| | - Cristina Piras
- Clinical Metabolomics Unit, Department of Biomedical Sciences, University of Cagliari, 09042 Monserrato, Italy;
| | - Gianluigi Franci
- Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, 84081 Baronissi, Italy;
| | - Massimiliano Galdiero
- Department of Experimental Medicine, University of Campania Luigi Vanvitelli, 80138 Naples, Italy;
| | - Giuseppe Pala
- Microbiology and Virology Unit, Department of Biomedical Sciences, University of Cagliari, 09042 Monserrato, Italy; (A.M.); (G.P.); (V.P.); (F.A.); (A.M.)
| | - Vanessa Palmas
- Microbiology and Virology Unit, Department of Biomedical Sciences, University of Cagliari, 09042 Monserrato, Italy; (A.M.); (G.P.); (V.P.); (F.A.); (A.M.)
| | - Fabrizio Angius
- Microbiology and Virology Unit, Department of Biomedical Sciences, University of Cagliari, 09042 Monserrato, Italy; (A.M.); (G.P.); (V.P.); (F.A.); (A.M.)
| | - Roberto Littera
- Department of Internal Medical Sciences, Medical Genetics, “R. Binaghi” Hospital, University of Cagliari, 09126 Cagliari, Italy;
- Associazione per l’Avanzamento della Ricerca per i Trapianti O.d.V., Non Profit Organisation, 09100 Cagliari, Italy
| | - Andrea Perra
- Oncology and Molecular Pathology Unit, Department of Biomedical Sciences, University of Cagliari, 09100 Cagliari, Italy;
| | - Germano Orrù
- Department of Medical Sciences and Public Health, University of Cagliari, 09042 Monserrato, Italy; (G.O.); (M.C.); (G.C.); (F.M.); (L.C.)
| | - Marcello Campagna
- Department of Medical Sciences and Public Health, University of Cagliari, 09042 Monserrato, Italy; (G.O.); (M.C.); (G.C.); (F.M.); (L.C.)
| | - Giulia Costanzo
- Department of Medical Sciences and Public Health, University of Cagliari, 09042 Monserrato, Italy; (G.O.); (M.C.); (G.C.); (F.M.); (L.C.)
| | - Federico Meloni
- Department of Medical Sciences and Public Health, University of Cagliari, 09042 Monserrato, Italy; (G.O.); (M.C.); (G.C.); (F.M.); (L.C.)
| | - Ferdinando Coghe
- Laboratory of Clinical Chemical Analysis and Microbiology, University Hospital of Cagliari, 09042 Monserrato, Italy;
| | - Luchino Chessa
- Department of Medical Sciences and Public Health, University of Cagliari, 09042 Monserrato, Italy; (G.O.); (M.C.); (G.C.); (F.M.); (L.C.)
| | - Aldo Manzin
- Microbiology and Virology Unit, Department of Biomedical Sciences, University of Cagliari, 09042 Monserrato, Italy; (A.M.); (G.P.); (V.P.); (F.A.); (A.M.)
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Salvagno GL, Henry BM, Pighi L, De Nitto S, Gianfilippi G, Lippi G. Effect of BNT162b2 booster dose on anti-SARS-CoV-2 spike trimeric IgG antibodies in seronegative individuals. Clin Chem Lab Med 2022; 60:930-933. [PMID: 35303764 DOI: 10.1515/cclm-2022-0212] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Accepted: 03/09/2022] [Indexed: 01/08/2023]
Abstract
OBJECTIVES We provide here an updated analysis of an ongoing serosurveillance study, presenting data on the effect of a third dose of Pfizer/BioNTech BNT162b2 vaccine on serum anti-SARS-CoV-2 IgG antibodies. METHODS We tested baseline SARS-CoV-2 seronegative healthcare workers undergoing primary vaccination with the mRNA-based COVID-19 Comirnaty vaccine, followed by administration of homologous vaccine booster (third dose). Venous blood was collected before either dose of primary vaccination, at 1, 3 and 6 months afterwards, as well as before and 1 month after receiving the vaccine booster. The serum concentration of anti-SARS-CoV-2 IgG was assayed with DiaSorin Trimeric spike IgG immunoassay. RESULTS The final study population included 53 SARS-CoV-2 seronegative healthcare workers (median age 46 years; 60% females). A first peak of anti-SARS-CoV-2 spike trimeric IgG values was reached 1 month after completing primary vaccination, after which the levels gradually declined until before receiving the vaccine booster. A second peak of anti-SARS-CoV-2 spike trimeric IgG concentration was observed 1 month after receiving the vaccine booster dose (8,700 kBAU/L), which was 39-fold higher than before receiving the vaccine booster (221 kBAU/L; p<0.001), but was also nearly threefold higher compared to values seen at the first peak (2,990 kBAU/L; p<0.001). The rate of subjects with protective anti-SARS-CoV-2 spike trimeric IgG values (i.e., >264 kBAU/L) increased from 47.2% to 100% after 1 month from vaccine booster. CONCLUSIONS These results support current policies fostering COVID-19 vaccine boosters to reinforce humoral immunity against SARS-CoV-2.
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Affiliation(s)
- Gian Luca Salvagno
- Section of Clinical Biochemistry, University of Verona, Verona, Italy
- Service of Laboratory Medicine, Pederzoli Hospital, Peschiera del Garda, Italy
| | - Brandon M Henry
- Clinical Laboratory, Division of Nephrology and Hypertension, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
- Disease Intervention & Prevention and Population Health Programs, Texas Biomedical Research Institute, San Antonio, TX, USA
| | - Laura Pighi
- Section of Clinical Biochemistry, University of Verona, Verona, Italy
- Service of Laboratory Medicine, Pederzoli Hospital, Peschiera del Garda, Italy
| | - Simone De Nitto
- Section of Clinical Biochemistry, University of Verona, Verona, Italy
- Service of Laboratory Medicine, Pederzoli Hospital, Peschiera del Garda, Italy
| | | | - Giuseppe Lippi
- Section of Clinical Biochemistry, University of Verona, Verona, Italy
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29
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Lau CS, Phua SK, Liang YL, Oh MLH, Aw TC. SARS-CoV-2 Spike and Neutralizing Antibody Kinetics 90 Days after Three Doses of BNT162b2 mRNA COVID-19 Vaccine in Singapore. Vaccines (Basel) 2022; 10:331. [PMID: 35214789 PMCID: PMC8879250 DOI: 10.3390/vaccines10020331] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 02/09/2022] [Accepted: 02/12/2022] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND We evaluated the post-booster (BNT162b2) antibody responses in Singapore. METHODS Participants (n = 43) were tested pre-booster and 20/30/60/90 days post-booster. Participants were boosted 120-240 days (mean 214 days) after their second dose and had no history or serologic evidence of prior COVID-19 infection; all participants had undetectable SARS-CoV-2 nucleocapsid antibodies throughout the study. Total nucleocapsid and spike antibodies (S-Ab) were assessed on the Roche Elecsys e802 and neutralizing antibody (N-Ab) on the Snibe quantitative N-Ab assay. RESULTS Pre-booster median S-Ab/N-Ab titers were 829 BAU/mL/0.83 µg/mL; 2 participants were below manufacturer's N-Ab cut-offs of 0.3 µg/mL (0.192 and 0.229). Both S-Ab and N-Ab titers peaked at 30 days post-booster (median S-Ab 25,220 BAU/mL and N-Ab 30.3 µg/mL) at 30-37× pre-booster median levels. These peak post-booster S-Ab/N-Ab titers were 11× (25,220 vs. 2235 BAU/mL) and 9× (30.3 vs. 3.52 µg/mL) higher than the previously reported peak post-second dose levels. Antibody titers declined to 12,315 BAU/mL (51% decrease) and 14.3 µg/mL (53% decrease) 90 days post-booster. Non-linear regression estimates for S-Ab/N-Ab half-lives were 44/58 days. At 180 days post-booster, S-Ab/N-Ab are estimated to be 2671 BAU/mL/4.83 µg/mL. CONCLUSIONS Both S-Ab and N-Ab show a good response following post-booster vaccination, with half-lives that may provide a prolonged antibody response.
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Affiliation(s)
- Chin Shern Lau
- Department of Laboratory Medicine, Changi General Hospital, Singapore 529889, Singapore; (S.K.P.); (Y.L.L.); (T.C.A.)
| | - Soon Kieng Phua
- Department of Laboratory Medicine, Changi General Hospital, Singapore 529889, Singapore; (S.K.P.); (Y.L.L.); (T.C.A.)
| | - Ya Li Liang
- Department of Laboratory Medicine, Changi General Hospital, Singapore 529889, Singapore; (S.K.P.); (Y.L.L.); (T.C.A.)
| | - May Lin Helen Oh
- Department of Infectious Diseases, Changi General Hospital, Singapore 529889, Singapore;
| | - Tar Choon Aw
- Department of Laboratory Medicine, Changi General Hospital, Singapore 529889, Singapore; (S.K.P.); (Y.L.L.); (T.C.A.)
- Department of Medicine, National University of Singapore, Singapore 119077, Singapore
- Academic Pathology Program, Duke-NUS Medical School, Singapore 169857, Singapore
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