The Antibodies’ Response to SARS-CoV-2 Vaccination: 1-Year Follow Up

The use of vaccines has allowed the containment of coronavirus disease 2019 (COVID-19) at a global level. The present work aims to add data on vaccination by evaluating the level of neutralizing antibodies in individuals who have received a three-vaccination series. For this purpose, we ran a survei...

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Main Authors: Eleonora Nicolai, Flaminia Tomassetti, Martina Pelagalli, Serena Sarubbi, Marilena Minieri, Alberto Nisini, Marzia Nuccetelli, Marco Ciotti, Massimo Pieri, Sergio Bernardini
Format: Article
Language:English
Published: MDPI AG 2023-09-01
Series:Biomedicines
Subjects:
Online Access:https://www.mdpi.com/2227-9059/11/10/2661
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author Eleonora Nicolai
Flaminia Tomassetti
Martina Pelagalli
Serena Sarubbi
Marilena Minieri
Alberto Nisini
Marzia Nuccetelli
Marco Ciotti
Massimo Pieri
Sergio Bernardini
author_facet Eleonora Nicolai
Flaminia Tomassetti
Martina Pelagalli
Serena Sarubbi
Marilena Minieri
Alberto Nisini
Marzia Nuccetelli
Marco Ciotti
Massimo Pieri
Sergio Bernardini
author_sort Eleonora Nicolai
collection DOAJ
description The use of vaccines has allowed the containment of coronavirus disease 2019 (COVID-19) at a global level. The present work aims to add data on vaccination by evaluating the level of neutralizing antibodies in individuals who have received a three-vaccination series. For this purpose, we ran a surveillance program directed at measuring the level of IgG Abs against the Receptor Binding Domain (RBD) and surrogate virus neutralizing Ab (sVNT) anti-SARS-CoV-2 in the serum of individuals undergoing vaccination. This study was performed on employees from the University of Rome Tor Vergata and healthcare workers from the University Hospital who received the Vaxzevria vaccine (n = 56) and Comirnaty vaccine (n = 113), respectively. After the second dose, an increase in both RBD and sVNT Ab values was registered. In individuals who received the Comirnaty vaccine, the antibody titer was about one order of magnitude higher after 6 months from the first dose. All participants in this study received the Comirnaty vaccine as the third dose, which boosted the antibody response. Five months after the third dose, nearly one year from the first injection, the antibody level was >1000 BAU/mL (binding antibody units/mL). According to the values reported in the literature conferring protection against SARS-CoV-2 infection, our data indicate that individuals undergoing three vaccine doses present a low risk of infection.
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spelling doaj.art-fe9d933699454402b494d17e6df4b67c2023-11-19T15:45:16ZengMDPI AGBiomedicines2227-90592023-09-011110266110.3390/biomedicines11102661The Antibodies’ Response to SARS-CoV-2 Vaccination: 1-Year Follow UpEleonora Nicolai0Flaminia Tomassetti1Martina Pelagalli2Serena Sarubbi3Marilena Minieri4Alberto Nisini5Marzia Nuccetelli6Marco Ciotti7Massimo Pieri8Sergio Bernardini9Department of Experimental Medicine, University of Rome Tor Vergata, Via Montpellier 1, 00133 Rome, ItalyDepartment of Experimental Medicine, University of Rome Tor Vergata, Via Montpellier 1, 00133 Rome, ItalyDepartment of Experimental Medicine, University of Rome Tor Vergata, Via Montpellier 1, 00133 Rome, ItalyDepartment of Experimental Medicine, University of Rome Tor Vergata, Via Montpellier 1, 00133 Rome, ItalyDepartment of Experimental Medicine, University of Rome Tor Vergata, Via Montpellier 1, 00133 Rome, ItalyDepartment of Diagnostic Imaging and Radiology, Tor Vergata University Hospital, Viale Oxford 81, 00133 Rome, ItalyDepartment of Laboratory Medicine, Tor Vergata University Hospital, Viale Oxford 81, 00133 Rome, ItalyDepartment of Laboratory Medicine, Virology Unit, Tor Vergata University Hospital, Viale Oxford 81, 00133 Rome, ItalyDepartment of Experimental Medicine, University of Rome Tor Vergata, Via Montpellier 1, 00133 Rome, ItalyDepartment of Experimental Medicine, University of Rome Tor Vergata, Via Montpellier 1, 00133 Rome, ItalyThe use of vaccines has allowed the containment of coronavirus disease 2019 (COVID-19) at a global level. The present work aims to add data on vaccination by evaluating the level of neutralizing antibodies in individuals who have received a three-vaccination series. For this purpose, we ran a surveillance program directed at measuring the level of IgG Abs against the Receptor Binding Domain (RBD) and surrogate virus neutralizing Ab (sVNT) anti-SARS-CoV-2 in the serum of individuals undergoing vaccination. This study was performed on employees from the University of Rome Tor Vergata and healthcare workers from the University Hospital who received the Vaxzevria vaccine (n = 56) and Comirnaty vaccine (n = 113), respectively. After the second dose, an increase in both RBD and sVNT Ab values was registered. In individuals who received the Comirnaty vaccine, the antibody titer was about one order of magnitude higher after 6 months from the first dose. All participants in this study received the Comirnaty vaccine as the third dose, which boosted the antibody response. Five months after the third dose, nearly one year from the first injection, the antibody level was >1000 BAU/mL (binding antibody units/mL). According to the values reported in the literature conferring protection against SARS-CoV-2 infection, our data indicate that individuals undergoing three vaccine doses present a low risk of infection.https://www.mdpi.com/2227-9059/11/10/2661SARS-CoV-2antibodiesserological testvaccine
spellingShingle Eleonora Nicolai
Flaminia Tomassetti
Martina Pelagalli
Serena Sarubbi
Marilena Minieri
Alberto Nisini
Marzia Nuccetelli
Marco Ciotti
Massimo Pieri
Sergio Bernardini
The Antibodies’ Response to SARS-CoV-2 Vaccination: 1-Year Follow Up
Biomedicines
SARS-CoV-2
antibodies
serological test
vaccine
title The Antibodies’ Response to SARS-CoV-2 Vaccination: 1-Year Follow Up
title_full The Antibodies’ Response to SARS-CoV-2 Vaccination: 1-Year Follow Up
title_fullStr The Antibodies’ Response to SARS-CoV-2 Vaccination: 1-Year Follow Up
title_full_unstemmed The Antibodies’ Response to SARS-CoV-2 Vaccination: 1-Year Follow Up
title_short The Antibodies’ Response to SARS-CoV-2 Vaccination: 1-Year Follow Up
title_sort antibodies response to sars cov 2 vaccination 1 year follow up
topic SARS-CoV-2
antibodies
serological test
vaccine
url https://www.mdpi.com/2227-9059/11/10/2661
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