Characteristics Associated with Serological Covid-19 Vaccine Response and Durability in an Older Population with Significant Comorbidity: The Danish Nationwide ENFORCE Study

Ole Schmeltz Søgaard*, Joanne Reekie, Isik Somuncu Johansen, Henrik Nielsen, Thomas Benfield, Lothar Wiese, Nina Breinholt Stærke, Kasper Iversen, Kamille Fogh, Jacob Bodilsen, Mette Iversen, Lene Surland Knudsen, Vibeke Klastrup, Fredrikke Dam Larsen, Sidsel Dahl Andersen, Astrid Korning Hvidt, Signe Rode Andreasen, Lone Wulff Madsen, Susan Olaf Lindvig, Anne ØvrehusSisse Rye Ostrowski, Christiane Abildgaard, Charlotte Matthews, Tomas O. Jensen, Dorthe Raben, Christian Erikstrup, Thea K. Fischer, Martin Tolstrup, Lars Østergaard, Jens Lundgren

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

30 Citations (Scopus)
29 Downloads (Pure)

Abstract

OBJECTIVES: To identify individual characteristics associated with serological COVID-19 vaccine responsiveness and durability of vaccine-induced antibodies.

METHODS: Adults without history of SARS-CoV-2 infection from the Danish population scheduled for SARS-CoV-2 vaccination were enrolled in this parallel group, phase IV study. SARS-CoV-2 Spike IgG and Spike-ACE2-receptor-blocking antibodies were measured at days 0, 21, 90 and 180. Vaccine responsiveness was categorized according to Spike IgG and Spike-ACE2-receptor-blocking levels at day 90 post-1st vaccination. Non-durable vaccine-response was defined as day 90 responders that no longer had significant responses by day 180.

RESULTS: Of 6544 participants completing two vaccine doses (median age 64, interquartile range:54-75), 3654 (55.8%) received BTN162b2, 2472 (37.8%) mRNA-1273, and 418 (6.4%) ChAdOx1 followed by a mRNA vaccine. Levels of both types of antibodies increased from baseline to day 90 and then decreased to day 180. The decrease was more pronounced for levels of Spike-ACE2-receptor-blocking antibodies than for Spike IgG. Proportions with vaccine hypo-responsiveness and lack of durable response were 5.0% and 12.1% for Spike IgG; 12.7% and 39.6% for Spike-ACE2-receptor-blocking antibody levels, respectively. Male sex, vaccine type and number of co-morbidities were associated with all four outcomes. Additionally, age >=75y was associated with hypo-responsiveness for Spike-ACE2-receptor-blocking antibodies (adjusted odds-ratio:1.59, 95% confidence interval:1.25-2.01) but not for Spike IgG.

CONCLUSIONS: Comorbidity, male sex and vaccine type were risk factors for hypo-responsiveness and non-durable response to COVID-19 vaccination. The functional activity of vaccine-induced antibodies declined with increasing age and had waned to pre-2nd vaccination levels for most individuals after 6 months.

Original languageEnglish
JournalClinical Microbiology and Infection
Volume28
Issue number8
Pages (from-to)1126-1133
Number of pages8
ISSN1198-743X
DOIs
Publication statusPublished - Aug 2022

Bibliographical note

Copyright © 2022 The Author(s). Published by Elsevier Ltd.. All rights reserved.

Keywords

  • Antibody
  • COVID-19
  • Immunity
  • SARS-CoV-2
  • Vaccination
  • Antibodies, Viral/blood
  • Spike Glycoprotein, Coronavirus/immunology
  • Comorbidity
  • Humans
  • Immunoglobulin G
  • Middle Aged
  • Antibodies, Blocking
  • Male
  • COVID-19 Vaccines/immunology
  • mRNA Vaccines
  • Angiotensin-Converting Enzyme 2
  • Denmark/epidemiology
  • COVID-19/epidemiology
  • Female
  • Aged

Fingerprint

Dive into the research topics of 'Characteristics Associated with Serological Covid-19 Vaccine Response and Durability in an Older Population with Significant Comorbidity: The Danish Nationwide ENFORCE Study'. Together they form a unique fingerprint.

Cite this