A Prospective Study of Immune Response After COVID-19 or Vaccination and Correlation Between Avidity Index and Neutralizing Capacity

Conclusion: Anti-spike IgG levels can be used as an estimation of the neutralizing titer, with the avidity index not contributing to a better estimation. There is a stronger initial immune response after vaccination, compared with natural infection. However, specific antibody levels decline over tim...

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Main Authors: Emma Löfström, Anna Eringfält, Arne Kötz, Wanda Christ, Stefan Kunkel, Johan Tham, Jonas Klingström, Johan Undén
Format: Article
Language:English
Published: Wiley 2025-01-01
Series:Advances in Virology
Online Access:http://dx.doi.org/10.1155/av/2265813
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author Emma Löfström
Anna Eringfält
Arne Kötz
Wanda Christ
Stefan Kunkel
Johan Tham
Jonas Klingström
Johan Undén
author_facet Emma Löfström
Anna Eringfält
Arne Kötz
Wanda Christ
Stefan Kunkel
Johan Tham
Jonas Klingström
Johan Undén
author_sort Emma Löfström
collection DOAJ
description Conclusion: Anti-spike IgG levels can be used as an estimation of the neutralizing titer, with the avidity index not contributing to a better estimation. There is a stronger initial immune response after vaccination, compared with natural infection. However, specific antibody levels decline over time, highlighting the importance of vaccine boosters.
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institution DOAJ
issn 1687-8647
language English
publishDate 2025-01-01
publisher Wiley
record_format Article
series Advances in Virology
spelling doaj-art-d6063c896bc443e888e34c0784c081ca2025-08-20T03:16:12ZengWileyAdvances in Virology1687-86472025-01-01202510.1155/av/2265813A Prospective Study of Immune Response After COVID-19 or Vaccination and Correlation Between Avidity Index and Neutralizing CapacityEmma Löfström0Anna Eringfält1Arne Kötz2Wanda Christ3Stefan Kunkel4Johan Tham5Jonas Klingström6Johan Undén7Department of Clinical SciencesDepartment of Clinical MicrobiologyDepartment of Clinical MicrobiologyDepartment of Medicine HuddingeDepartment of Research and DevelopmentDepartment of Translational MedicineDepartment of Medicine HuddingeDepartment of Operation and Intensive CareConclusion: Anti-spike IgG levels can be used as an estimation of the neutralizing titer, with the avidity index not contributing to a better estimation. There is a stronger initial immune response after vaccination, compared with natural infection. However, specific antibody levels decline over time, highlighting the importance of vaccine boosters.http://dx.doi.org/10.1155/av/2265813
spellingShingle Emma Löfström
Anna Eringfält
Arne Kötz
Wanda Christ
Stefan Kunkel
Johan Tham
Jonas Klingström
Johan Undén
A Prospective Study of Immune Response After COVID-19 or Vaccination and Correlation Between Avidity Index and Neutralizing Capacity
Advances in Virology
title A Prospective Study of Immune Response After COVID-19 or Vaccination and Correlation Between Avidity Index and Neutralizing Capacity
title_full A Prospective Study of Immune Response After COVID-19 or Vaccination and Correlation Between Avidity Index and Neutralizing Capacity
title_fullStr A Prospective Study of Immune Response After COVID-19 or Vaccination and Correlation Between Avidity Index and Neutralizing Capacity
title_full_unstemmed A Prospective Study of Immune Response After COVID-19 or Vaccination and Correlation Between Avidity Index and Neutralizing Capacity
title_short A Prospective Study of Immune Response After COVID-19 or Vaccination and Correlation Between Avidity Index and Neutralizing Capacity
title_sort prospective study of immune response after covid 19 or vaccination and correlation between avidity index and neutralizing capacity
url http://dx.doi.org/10.1155/av/2265813
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