SARS-CoV-2 neutralizing antibody response in vaccinated and non-vaccinated hospital healthcare workers with or without history of infection.

Details

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State: Public
Version: Final published version
License: CC BY 4.0
Serval ID
serval:BIB_35EA6DCB0511
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
SARS-CoV-2 neutralizing antibody response in vaccinated and non-vaccinated hospital healthcare workers with or without history of infection.
Journal
Microbes and infection
Author(s)
Jacot D., von Rotz U., Pellaton C., Blondet F., Aebischer O., Perreau M., De Rham M., Pantaleo G., Marchetti O., Greub G.
ISSN
1769-714X (Electronic)
ISSN-L
1286-4579
Publication state
Published
Issued date
2023
Peer-reviewed
Oui
Volume
25
Number
1-2
Pages
105077
Language
english
Notes
Publication types: Observational Study ; Journal Article
Publication Status: ppublish
Abstract
Between March 2021 and February 2022, SARS-CoV-2 neutralizing antibodies dynamics was investigated in a prospective observational study in 903 healthcare workers of a hospital in Switzerland. A surrogate neutralization assay measuring the competitive inhibition of the angiotensin converting enzyme 2 (ACE2) binding to the spike protein (S) of the SARS-CoV-2 wild type virus and to five variants of concern (Alpha, Beta, Gamma, Delta, Omicron) was used. We observed a broad distribution of neutralization activity among participants and substantial differences in neutralizing titers against variants. Participants were grouped based on combinations of vaccination status (1, 2 or 3 doses) and/or prior or subsequent SARS-CoV-2 infection/reinfection. Triple vaccination resulted in the highest neutralization response, as did double vaccination with prior or subsequent infection. Double vaccination without infection showed an intermediate neutralization response while SARS-CoV-2 infection in non-vaccinated participants resulted in poor neutralization response. After triple vaccination or double vaccination plus infection, additional vaccination and/or reinfection had no impact on neutralizing antibody titers over the observed period. These results strongly support the booster dose strategy, while additional booster doses within short time intervals might not improve immunization. However, dynamics of neutralizing antibodies titers needs to be monitored individually, over time and include newly emerging variants.
Keywords
Humans, SARS-CoV-2, Reinfection, COVID-19/prevention & control, Health Personnel, Hospitals, Vaccination, Antibodies, Neutralizing, Antibodies, Viral, Epidemiology, Neutralization test
Pubmed
Web of science
Open Access
Yes
Create date
28/11/2022 16:54
Last modification date
26/07/2023 7:09
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