The Dynamics of Changes in the Concentration of IgG against the S1 Subunit in Polish Healthcare Workers in the Period from 1 to 12 Months after Injection, Including Four COVID-19 Vaccines

Background: The presented research made it possible to obtain the characteristics of changes in anti-SARS-CoV-2 IgG within one year of vaccination in healthcare workers. Materials and Methods: The research group consisted of 18,610 participants represented by medical and administration staff. IgG an...

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Main Authors: Monika Skorupa, Joanna Szczepanek, Agnieszka Goroncy, Joanna Jarkiewicz-Tretyn, Barbara Ptaszyńska, Paweł Rajewski, Wojciech Koper, Krzysztof Pałgan, Andrzej Tretyn
Format: Article
Language:English
Published: MDPI AG 2022-03-01
Series:Vaccines
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Online Access:https://www.mdpi.com/2076-393X/10/4/506
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author Monika Skorupa
Joanna Szczepanek
Agnieszka Goroncy
Joanna Jarkiewicz-Tretyn
Barbara Ptaszyńska
Paweł Rajewski
Wojciech Koper
Krzysztof Pałgan
Andrzej Tretyn
author_facet Monika Skorupa
Joanna Szczepanek
Agnieszka Goroncy
Joanna Jarkiewicz-Tretyn
Barbara Ptaszyńska
Paweł Rajewski
Wojciech Koper
Krzysztof Pałgan
Andrzej Tretyn
author_sort Monika Skorupa
collection DOAJ
description Background: The presented research made it possible to obtain the characteristics of changes in anti-SARS-CoV-2 IgG within one year of vaccination in healthcare workers. Materials and Methods: The research group consisted of 18,610 participants represented by medical and administration staff. IgG antibody concentrations were determined by ELISA. Results: At 5–8 months after full vaccination, the levels of anti-SARS-CoV-2 IgG with equal vaccines were similar. The exception was JNJ-78436735, for which IgG levels were significantly lower. In the 9th month after vaccination, an increase in the anti-SARS-CoV-2 IgG level, suggesting asymptomatic infection, was observed in a large group of participants. Significantly higher levels of anti-SARS-CoV-2 IgG antibodies were observed after the booster dose compared to the second dose. The increase in antibodies was observed already around the 5th day after the injection of the booster dose, and was maximized at approximately the 14th day. Conclusion: The cut-off date for protection against the disease seems to be the period 8–9 months from the vaccination for mRNA vaccines and 5–6 months for vector vaccines. The introduction of a booster dose was the right decision, which could have a real impact on restricting the further transmission of the virus.
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spelling doaj.art-b900e09084cf4c96944d0e6b09cb0aca2023-11-30T22:01:45ZengMDPI AGVaccines2076-393X2022-03-0110450610.3390/vaccines10040506The Dynamics of Changes in the Concentration of IgG against the S1 Subunit in Polish Healthcare Workers in the Period from 1 to 12 Months after Injection, Including Four COVID-19 VaccinesMonika Skorupa0Joanna Szczepanek1Agnieszka Goroncy2Joanna Jarkiewicz-Tretyn3Barbara Ptaszyńska4Paweł Rajewski5Wojciech Koper6Krzysztof Pałgan7Andrzej Tretyn8Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University, 87-100 Torun, PolandCentre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University, 87-100 Torun, PolandFaculty of Mathematics and Computer Science, Nicolaus Copernicus University, 87-100 Torun, PolandNon-Public Health Care Centre, Cancer Genetics Laboratory, 87-100 Torun, PolandMarshal’s Office of the Kuyavian-Pomeranian Voivodeship, 87-100 Torun, PolandDepartment of Internal and Infectious Diseases, Provincial Infectious Disease Hospital, 85-067 Bydgoszcz, PolandThe Voivodeship Sanitary-Epidemiological Station in Bydgoszcz, 85-031 Bydgoszcz, PolandDepartment of Allergology, Clinical Immunology and Internal Diseases, Collegium Medicum, Nicolaus Copernicus University, 85-067 Bydgoszcz, PolandCentre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University, 87-100 Torun, PolandBackground: The presented research made it possible to obtain the characteristics of changes in anti-SARS-CoV-2 IgG within one year of vaccination in healthcare workers. Materials and Methods: The research group consisted of 18,610 participants represented by medical and administration staff. IgG antibody concentrations were determined by ELISA. Results: At 5–8 months after full vaccination, the levels of anti-SARS-CoV-2 IgG with equal vaccines were similar. The exception was JNJ-78436735, for which IgG levels were significantly lower. In the 9th month after vaccination, an increase in the anti-SARS-CoV-2 IgG level, suggesting asymptomatic infection, was observed in a large group of participants. Significantly higher levels of anti-SARS-CoV-2 IgG antibodies were observed after the booster dose compared to the second dose. The increase in antibodies was observed already around the 5th day after the injection of the booster dose, and was maximized at approximately the 14th day. Conclusion: The cut-off date for protection against the disease seems to be the period 8–9 months from the vaccination for mRNA vaccines and 5–6 months for vector vaccines. The introduction of a booster dose was the right decision, which could have a real impact on restricting the further transmission of the virus.https://www.mdpi.com/2076-393X/10/4/506SARS-CoV-2COVID-19vaccinationantibodiesBNT162b2mRNA-1273
spellingShingle Monika Skorupa
Joanna Szczepanek
Agnieszka Goroncy
Joanna Jarkiewicz-Tretyn
Barbara Ptaszyńska
Paweł Rajewski
Wojciech Koper
Krzysztof Pałgan
Andrzej Tretyn
The Dynamics of Changes in the Concentration of IgG against the S1 Subunit in Polish Healthcare Workers in the Period from 1 to 12 Months after Injection, Including Four COVID-19 Vaccines
Vaccines
SARS-CoV-2
COVID-19
vaccination
antibodies
BNT162b2
mRNA-1273
title The Dynamics of Changes in the Concentration of IgG against the S1 Subunit in Polish Healthcare Workers in the Period from 1 to 12 Months after Injection, Including Four COVID-19 Vaccines
title_full The Dynamics of Changes in the Concentration of IgG against the S1 Subunit in Polish Healthcare Workers in the Period from 1 to 12 Months after Injection, Including Four COVID-19 Vaccines
title_fullStr The Dynamics of Changes in the Concentration of IgG against the S1 Subunit in Polish Healthcare Workers in the Period from 1 to 12 Months after Injection, Including Four COVID-19 Vaccines
title_full_unstemmed The Dynamics of Changes in the Concentration of IgG against the S1 Subunit in Polish Healthcare Workers in the Period from 1 to 12 Months after Injection, Including Four COVID-19 Vaccines
title_short The Dynamics of Changes in the Concentration of IgG against the S1 Subunit in Polish Healthcare Workers in the Period from 1 to 12 Months after Injection, Including Four COVID-19 Vaccines
title_sort dynamics of changes in the concentration of igg against the s1 subunit in polish healthcare workers in the period from 1 to 12 months after injection including four covid 19 vaccines
topic SARS-CoV-2
COVID-19
vaccination
antibodies
BNT162b2
mRNA-1273
url https://www.mdpi.com/2076-393X/10/4/506
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