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Longitudinal observation and decline of neutralizing antibody responses in the three months following SARS-CoV-2 infection in humans
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Abstract
Antibody responses to SARS-CoV-2 can be detected in most infected individuals 10-15 d after the onset of COVID-19 symptoms. However, due to the recent emergence of SARS-CoV-2 in the human population, it is not known how long antibody responses will be maintained or whether they will provide protection from reinfection. Using sequential serum samples collected up to 94 d post onset of symptoms (POS) from 65 individuals with real-time quantitative PCR-confirmed SARS-CoV-2 infection, we show seroconversion (immunoglobulin (Ig)M, IgA, IgG) in >95% of cases and neutralizing antibody responses when sampled beyond 8 d POS. We show that the kinetics of the neutralizing antibody response is typical of an acute viral infection, with declining neutralizing antibody titres observed after an initial peak, and that the magnitude of this peak is dependent on disease severity. Although some individuals with high peak infective dose (ID 50 > 10,000) maintained neutralizing antibody titres >1,000 at >60 d POS, some with lower peak ID 50 had neutralizing antibody titres approaching baseline within the follow-up period. A similar decline in neutralizing antibody titres was observed in a cohort of 31 seropositive healthcare workers. The present study has important implications when considering widespread serological testing and antibody protection against reinfection with SARS-CoV-2, and may suggest that vaccine boosters are required to provide long-lasting protection.
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“SARS-CoV-2 infection rapidly elicits nAbs (16, 21–24) that decline, but remain detectable, over several months (25–29).”
From mRNA vaccination boosts cross-variant neutralizing antibodies elicited by SARS-CoV-2 infection (2021) · cites this paper as [28]
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“11 Conversely, assessments performed in daily clinical settings can conveniently detect IgG antibodies against RBD in routine laboratory settings.”
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COVID-19 Case Rates in the UK: Modelling Uncertainties as Lockdown Lifts
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“It was shown recently that with the decline in IgG, IgM, and IgA after 3 months the neutralizing capacity of the antibodies also decreases.(35) However, this information from case reports or small case series has been counterbalanced by the emergence of an increasing literature that suggests that antibodies can last l…”
Kesheh, M. M., Shavandi, S., Hosseini, P., Kakavand‐Ghalehnoei, R., & Keyvani, H. (2021) · BioMed Research International · doi:10.1155/2021/6693909 · Cited by 7
Bagno, F. F., Andrade, L. A. F., Sérgio, S. A. R., Parise, P. L., de Toledo-Teixeira, D. A., Gazzinelli, R. T., Fernandes, A. P., Teixeira, S. M. R., Granja, F., Proença‐Módena, J. L., et al. (2022) · Viruses · doi:10.3390/v14030510 · Cited by 7
Mediu, R., Rama, A., & Puca, E. (2022) · The Journal of Infection in Developing Countries · doi:10.3855/jidc.16310 · Cited by 8
Sjöwall, J., Hjorth, M., Gustafsson, A., Göransson, R., Larsson, M., Waller, H., Nordgren, J., Nilsdotter‐Augustinsson, Å., & Nyström, S. N. (2022) · Journal of Clinical Medicine · doi:10.3390/jcm11123535 · Cited by 7
“IgG antibodies specific for the RBD of the spike protein have been shown to correlate with neutralization activity [27].”
BackgroundSARS-CoV-2-Induced Immunosuppression: A Molecular Mimicry Syndrome
Kanduc, D. (2022) · Global Medical Genetics · doi:10.1055/s-0042-1748170 · Cited by 7
Bang, M.-S., Kim, C., Cho, N., Seo, J.-W., Kim, D. Y., Yun, N. R., & Kim, D. (2023) · Frontiers in Immunology · doi:10.3389/fimmu.2023.1203803 · Cited by 7
Yang, X., Fox, A., DeCarlo, C., Pineda, N., & Powell, R. L. R. (2023) · Breastfeeding Medicine · doi:10.1089/bfm.2023.0117 · Cited by 10
“32,39,40 The serum IgG half-life has been reported to be > 3 months in multiple studies, with 57% of individuals who were asymptomatically infected being IgG seropositive after 8 months and 71% of those who experienced mild symptoms maintaining positive IgG titers.”
Kroidl, I., Winter, S., Rubio‐Acero, R., Bakuli, A., Geldmacher, C., Eser, T. M., Deák, F., Horn, S., Zielke, A., Ahmed, M. I. M., et al. (2023) · Virology Journal · doi:10.1186/s12985-023-02167-z · Cited by 7
Stern, D., Meyer, T. C., Treindl, F., Mages, H. W., Krüger, M., Skiba, M., Krüger, J. P., Zobel, C., Schreiner, M., Grossegesse, M., et al. (2023) · Scientific Reports · doi:10.1038/s41598-023-48581-9 · Cited by 8
SARS-CoV-2 and approaches for a testing and diagnostic strategy
Hristov, D. R., Gómez-Márquez, J., Wade, D., & Hamad‐Schifferli, K. (2021) · Journal of Materials Chemistry B · doi:10.1039/d1tb00674f · Cited by 6
Decline in Sars‐CoV‐2 antibodies over 6‐month follow‐up in obstetrical healthcare workers
Kiefer, M. K., Allen, K. D., Russo, J. R., Ma’ayeh, M., Gee, S. E., Kniss, D. A., Cackovic, M., Costantine, M. M., & Rood, K. M. (2021) · American Journal of Reproductive Immunology · doi:10.1111/aji.13490 · Cited by 6
A serological investigation in Southern Italy: was SARS-CoV-2 circulating in late 2019?
Trombetta, C. M., Marchi, S., Viviani, S., Manenti, A., Casa, E., Dapporto, F., Remarque, E. J., Bollati, V., Manini, I., Lazzeri, G., et al. (2022) · Human Vaccines & Immunotherapeutics · doi:10.1080/21645515.2022.2047582 · Cited by 8
Kaygusuz, S., Korukluoğlu, G., Coşgun, Y., Şahin, Ö., & Arslan, F. (2022) · Journal of Medical Virology · doi:10.1002/jmv.27751 · Cited by 8
de Oliveira, C. F., Neto, W. F. F., da Silva, C. P., Ribeiro, A. C. D. S., Martins, L. C., de Sousa, A. W., Freitas, M. N. O., Chiang, J. O., Silva, F. A., dos Santos, É. B., et al. (2022) · Vaccines · doi:10.3390/vaccines10050690 · Cited by 6
“This data provides solid evidence that humoral immunity against SARS-CoV-2 may not be long-lasting in people with mild disease and is aligned with reports from other countries [17,18,20].”
BackgroundResultCruz-Machado, A. R., Barreira, S. C., Bandeira, M., Veldhoen, M., Gomes, A., Serrano, M., Duarte, C., Rato, M., Fernandes, B. M., Garcia, S., et al. (2022) · Frontiers in Medicine · doi:10.3389/fmed.2022.901817 · Cited by 7
“At the very least, they suggest that it is not worse than that observed in the general population (8, 41, 42).”
BackgroundMoore, T., Hossain, R., Doores, K. J., Shankar‐Hari, M., & Fear, D. J. (2022) · Viral Immunology · doi:10.1089/vim.2022.0013 · Cited by 7
“The work from this study largely supports existing studies that have shown some disease severity-associated differences in SARS-CoV-2 antigen-specific IgG titers, particularly in the early periods of convalescence (4,7,14,27,28,30,33).”
InfluentialSelf-citationKinetics of severe acute respiratory syndrome coronavirus 2 infection antibody responses
Lin, Y., Zhu, J., Liu, Z., Li, C., Guo, Y., Wang, Y., & Chen, K. (2022) · Frontiers in Immunology · doi:10.3389/fimmu.2022.864278 · Cited by 7
“The specific IgA, targeting different antigens (S, RBD, N), peaked at about 1 month (16–30 days PSO) and then declined (26, 27).”
BackgroundOn Ambiguity Reduction and the Role of Decision Analysis during the Pandemic
Rode, D. C., & Fischbeck, P. S. (2021) · Risk Analysis · doi:10.1111/risa.13705 · Cited by 8
“…of the National Institute of Allergy and Infectious Diseases, suggested that the government would consider issuing “certificates of immunity” to those with certain antibodies (Forgey, 2020), notwithstanding evidence that such immunity may be short-lived (Edridge et al., 2020; Seow et al., 2020).”
BackgroundDanchin, A., Pagani-Azizi, O., Turinici, G., & Yahiaoui, G. (2020) · medRxiv · doi:10.1101/2020.10.21.20216713 · Cited by 4
Sieling, P. A., Zakin, L., Shin, A., Morimoto, B., Adisetiyo, H., Garbán, H., Liu, P., Rice, A., Taft, J. D., Patel, R. S., et al. (2020) · medRxiv · doi:10.1101/2020.11.04.20225417 · Cited by 7
Mayr, M., Gutmann, C., Takov, K., Burnap, S. A., Singh, B., Theofilatos, K., Reed, E., Hasman, M., Nabeebaccus, A., Fish, M., et al. (2020) · doi:10.21203/rs.3.rs-101592/v1 · Cited by 7
Self-citationRakshit, S., Adiga, V., Ahmed, A., Parthiban, C., Kumar, N. C., Shivalingaiah, S., Rao, S., D′Souza, G., Dwarkanath, P., Dias, M., et al. (2022) · Research Square · doi:10.21203/rs.3.rs-1395683/v1 · Cited by 7
Self-citationKinetics and Correlates of the Neutralizing Antibody Response to SARS-CoV-2Preprint
Vanshylla, K., Cristanziano, V. D., Kleipass, F., Dewald, F., Schommers, P., Gieselmann, L., Gruell, H., Schlotz, M., Ercanoglu, M. S., Stumpf, R., et al. (2021) · SSRN Electronic Journal · doi:10.1101/2021.01.26.428207 · Cited by 7
Severe Acute Respiratory Syndrome Coronavirus‐2
Slev, P. R. (2024) · Wiley eBooks · doi:10.1002/9781683674023.ch54 · Cited by 8
Antibodies to the RBD of SARS-CoV-2 spike mediate productive infection of primary human macrophages
Pickering, S., Wilson, H., Bravo, E., Perera, M. R., Seow, J., Graham, C., Almeida, N., Fotopoulos, L., Williams, T., Moitra, A., et al. (2024) · Nature Communications · doi:10.1038/s41467-024-54458-w · Cited by 6
“…and mechanical ventilation or supplemental oxygen ( F I O 2 > 0.8) and peripheral oxygen saturations <90% (with no history of type 2 respiratory failure) or <85% (with known type 2 respiratory failure) for at least 12 hours; 5, the requirement for extracorporeal membrane oxygenation 87,88 .”
InfluentialSelf-citationBaxendale, H., Wells, D., Gronlund, J., Nadesalingam, A., Paloniemi, M., Carnell, G., Tonks, P., Ceron‐Gutierrez, L., Ebrahimi, S., Sayer, A., et al. (2021) · The Journal of Critical Care Medicine · doi:10.2478/jccm-2021-0018 · Cited by 6
“Diagnostic thresholds for the serology assay we used were established using acute phase sera from patients with moderate to severe disease and as such may have reduced sensitivity for detecting history of exposure particularly in those with asymptomatic or mild infection in whom short lived or no seroconversion has be…”
MethodLi, S., Wang, W., Li, T., Han, X., Hu, C., Wang, Y., Shen, M., Du, L., Nai, Y., Wang, J., et al. (2020) · Genes & Diseases · doi:10.1016/j.gendis.2020.12.007 · Cited by 6
A case of COVID-19 Reinfection and Systematic Review of Patterns of Reinfection
Chamblain, M., Dawkins, E., Lane, J. C., Ghany, R. A., Tamariz, L. J., Palacio, A., & Guzman-Suarez, B. (2021) · Infectious Diseases in Clinical Practice · doi:10.1097/ipc.0000000000001055 · Cited by 6
“Potential mechanisms include suboptimal control of the SARSCoV-2 infection due to inappropriate T-cell response,(3) allowing a second episode of viral replication, an insufficient production of antibodies due to mild illness or immune dysfunction, or the loss of the antibodies over time.(4) Our patient's initial mild…”
BackgroundQin, T., Guo, E., Lu, F., Fu, Y., Liu, S., Xiao, R., Wu, X. Y., Liu, C., He, C., Wang, Z., et al. (2021) · Aging · doi:10.18632/aging.203739 · Cited by 6
“Recent studies suggested that antibodies may be maintained for 2-6 months after SARS-CoV-2 recovery [11, 41].”
BackgroundMethodWang, Y., Xiao, J., Wei, J., Peng, Y., Li, M., & Tong, Y. (2024) · Microchemical Journal · doi:10.1016/j.microc.2024.111126 · Cited by 6
Seow, J., Jefferson, G. C. E., Keegan, M. D., Yau, Y., Snell, L. B., & Doores, K. J. (2024) · PLoS Pathogens · doi:10.1371/journal.ppat.1012724 · Cited by 6
Self-citationNovelli, S., Reinkemeyer, C., Bulaev, D., O’Sullivan, M. P., Snoeck, C. J., Rauschenberger, A., Manto, C., Kolodkin, A. N., Ghosh, S., Satagopam, V., et al. (2025) · PLoS ONE · doi:10.1371/journal.pone.0320196 · Cited by 8
“For both antigens, data accumulated shows that after symptom onset seroconversion of IgM and IgG occurs at about 2–3 weeks and IgM levels drop significantly after 4–6 weeks, whereas IgG titers may last longer, as would be expected after an acute viral infection [3,4].”
Becza, N., Yao, L., Lehmann, P., & Kirchenbaum, G. A. (2025) · Vaccines · doi:10.3390/vaccines13070765 · Cited by 5
“Subsequently, antibody levels can decline within months after vaccinations or infections [11–13], leaving the host susceptible to (re-)infection.”
Rosati, P., Giordano, U., & Concato, C. (2020) · Trends in Medicine · doi:10.15761/tim.1000249 · Cited by 6
Optimal COVID-19 Vaccine Sharing Between Two Nations That Also Have Extensive Travel Exchanges
Huntingford, C., Rawson, T., & Bonsall, M. B. (2021) · Frontiers in Public Health · doi:10.3389/fpubh.2021.633144 · Cited by 6
“(24) report that acute immunity wanes as expected, but longer immunity from immunoglobulin antobodies can last beyond 94 days.”
BackgroundVignals, C., Dick, D. W., Thiébaut, R., Wittkop, L., Prague, M., & Heffernan, J. M. (2021) · COVID · doi:10.3390/covid1020041 · Cited by 6
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“It was described that immune response in COVID-19 is multiple and that antibodies directed against SARS-CoV-2 wane over time [33,34], suggesting possible serorevertion”
BackgroundThe immunologic response to severe acute respiratory syndrome coronavirus 2
Le, N. K., Kaman, K., Martin, H. C., Mullur, J., Stenehjem, K. K., Coomar, L. A., Bahar, B., Dutta, M., Izurieta, R., & Brooks, J. P. (2021) · Allergy and Asthma Proceedings · doi:10.2500/aap.2021.42.210077 · Cited by 6
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“[9] Seow J, Graham C, Merrick B, et al.”
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Lagousi, T., Routsias, J. G., Mavrouli, M. D., Papadatou, I., Geropeppa, M., & Spoulou, V. I. (2022) · Vaccines · doi:10.3390/vaccines10081210 · Cited by 6
“Rapidly decreasing anti-SARS-CoV-2 antibody levels following vaccination indicate that humoral immunity might be transient, implying the necessity of a booster dose [20].”
BackgroundVangeti, S., Periasamy, S., Sun, P., Balinsky, C. A., Mahajan, A. S., Kuzmina, N. A., Schanoski, A. S., Cooper, E. S., Beckett, C. G., Marayag, J., et al. (2022) · Microbiology Spectrum · doi:10.1128/spectrum.01837-22 · Cited by 7
Metadata
- Authors
- Seow, J., Graham, C., Merrick, B., Acors, S., Pickering, S., Steel, K. J. A., Hemmings, O., O’Byrne, A., Kouphou, N., Galao, R. P., Betancor, G., Wilson, H. D., Signell, A. W., Winstone, H., Kerridge, C., Huettner, I., Jimenez-Guardeño, J. M., Lista, M. J., Temperton, N., Snell, L. B., Bisnauthsing, K., Moore, A., Green, A., Martinez, L., Stokes, B., Honey, J., Izquierdo-Barras, A., Arbane, G., Patel, A., Tan, M. K. I., O’Connell, L., O’Hara, G., MacMahon, E., Douthwaite, S., Nebbia, G., Batra, R., Martinez-Nunez, R., Shankar-Hari, M., Edgeworth, J. D., Neil, S. J. D., Malim, M. H., & Doores, K. J.
- Affiliations
- King's College London (GB)
- Guy's Hospital (GB)
- Medway School of Pharmacy (GB)
- Guy's and St Thomas' NHS Foundation Trust (GB)
- Corresponding author
- Doores, Katie J.
- ORCID
- Seow, Jeffrey
- Merrick, Blair
- Acors, Sam
- Pickering, Suzanne
- Steel, Kathryn J. A.
- Hemmings, Oliver
- O’Byrne, Aoife
- Kouphou, Neophytos
- Galao, Rui Pedro
- Betancor, Gilberto
- Wilson, Harry D.
- Signell, Adrian W.
- Winstone, Helena
- Jimenez-Guardeño, Jose M.
- Temperton, Nigel
- Snell, Luke B.
- Bisnauthsing, Karen
- Martinez, Lauren
- Stokes, Brielle
- Izquierdo-Barras, Alba
- Patel, Amita
- Tan, Mark Kia Ik
- O’Connell, Lorcan
- O’Hara, Geraldine
- Douthwaite, Sam
- Nebbia, Gaia
- Batra, Rahul
- Shankar-Hari, Manu
- Edgeworth, Jonathan D.
- Neil, Stuart J. D.
- Malim, Michael H.
- Doores, Katie J.
- Venue
- Nature Microbiology
- Published
- 2020-10-26
- Volume
- 5
- Issue
- 12
- Pages
- 1598-1607
- ISSN
- 2058-5276 (ISSN-L)
- PMC
- PMC7610833
- OpenAlex
- W3093667122
- Cited by
- 1,419
- References
- 62
- Citations by year
- 2026: 18 · 2025: 44 · 2024: 75 · 2023: 147 · 2022: 311 · 2021: 615 · 2020: 207
- FWCI
- 41.93
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Licence
- Locations
- Nature Microbiology (publishedVersion)
- medRxiv (acceptedVersion, cc-by-nc-nd)
- PubMed (publishedVersion)
- Pure Amsterdam UMC (publishedVersion, other-oa)
- Kent Academic Repository (University of Kent) (acceptedVersion)
- PubMed Central (acceptedVersion)
- Data Archiving and Networked Services (DANS) (submittedVersion)
- Research Portal (King's College London) (submittedVersion, other-oa)
- Repositorio Institucional de la Universidad de Málaga (University of Málaga) (submittedVersion, cc-by-nc-nd)
- Funders
- RCUK | Medical Research Council (MC/PC/15068, MR/N013700/1, MR/R015643/1, MC/PC/15068, MR/R015643/1, MR/S023747/1)
- Huo Family Foundation
- Wellcome Trust (WT098049AIA, MR/S023747/1, 106223/Z/14/Z)
- Huo Family Foundation King’s Together Rapid COVID-19 Call award
- DH | National Institute for Health Research (CS-2016-16-011)
- King’s Together Rapid COVID-19 Call award Huo Family Foundation
- Fondation Dormeur, Vaduz King’s Together Rapid COVID-19 Call award Huo Family Foundation
- Topics
- Health Sciences › Medicine › Infectious Diseases › SARS-CoV-2 and COVID-19 Research
- Health Sciences › Medicine › Infectious Diseases › COVID-19 Clinical Research Studies
- Health Sciences › Medicine › Infectious Diseases › SARS-CoV-2 detection and testing
- Keywords
- SARS-CoV-2, COVID-19 pandemic, neutralizing antibodies, antibody waning, seroconversion, antibody kinetics, disease severity, infectious dose, reinfection protection, healthcare workers, booster vaccination, serological testing
- MeSH terms
- Seroconversion, COVID-19, SARS-CoV-2, Adult, Aged, Aged, 80 and over, Antibodies, Viral, Female, Humans, Kinetics, Longitudinal Studies, Male, Middle Aged, Severity of Illness Index, Young Adult, Antibodies, Neutralizing
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