Antibody Response after SARS-CoV-2 Infection with the Delta and Omicron Variant

The SARS-CoV-2 virus caused a worldwide COVID-19 pandemic. So far, 6,120,834 confirmed cases of COVID-19 with 116,773 deaths have been reported in Poland. According to WHO, a total of 54,662,485 vaccine doses have been administered. New variants emerge that become dominant. The aim of this study was...

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Main Authors: Agata Błaszczuk, Aleksander Michalski, Dominika Sikora, Maria Malm, Bartłomiej Drop, Małgorzata Polz-Dacewicz
Format: Article
Language:English
Published: MDPI AG 2022-10-01
Series:Vaccines
Subjects:
Online Access:https://www.mdpi.com/2076-393X/10/10/1728
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author Agata Błaszczuk
Aleksander Michalski
Dominika Sikora
Maria Malm
Bartłomiej Drop
Małgorzata Polz-Dacewicz
author_facet Agata Błaszczuk
Aleksander Michalski
Dominika Sikora
Maria Malm
Bartłomiej Drop
Małgorzata Polz-Dacewicz
author_sort Agata Błaszczuk
collection DOAJ
description The SARS-CoV-2 virus caused a worldwide COVID-19 pandemic. So far, 6,120,834 confirmed cases of COVID-19 with 116,773 deaths have been reported in Poland. According to WHO, a total of 54,662,485 vaccine doses have been administered. New variants emerge that become dominant. The aim of this study was a comparison of antibody level after infection caused by Delta and Omicron variants. The study included 203 persons who underwent mild COVID-19 despite two doses of vaccine. The obtained results indicate that a significantly lower titer was observed in patients with the Omicron variant infection. Therefore, these patients may be at risk of reinfection with new strains of the Omicron variant. Due to the possibility of reinfection, booster vaccinations are necessary. Further epidemiological and clinical studies are necessary to develop new prevention strategies.
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spelling doaj.art-f200d40d9d874fc9a8f73f6c9a6e77d12023-11-24T03:05:01ZengMDPI AGVaccines2076-393X2022-10-011010172810.3390/vaccines10101728Antibody Response after SARS-CoV-2 Infection with the Delta and Omicron VariantAgata Błaszczuk0Aleksander Michalski1Dominika Sikora2Maria Malm3Bartłomiej Drop4Małgorzata Polz-Dacewicz5Department of Virology with SARS Laboratory, Medical University of Lublin, 20-093 Lublin, Poland1st Clinical Military Hospital with Outpatient Clinic in Lublin, 20-049 Lublin, PolandDepartment of Virology with SARS Laboratory, Medical University of Lublin, 20-093 Lublin, PolandDepartment of Computer Science and Medical Statistics with the e-Health Laboratory, 20-090 Lublin, PolandDepartment of Computer Science and Medical Statistics with the e-Health Laboratory, 20-090 Lublin, PolandDepartment of Virology with SARS Laboratory, Medical University of Lublin, 20-093 Lublin, PolandThe SARS-CoV-2 virus caused a worldwide COVID-19 pandemic. So far, 6,120,834 confirmed cases of COVID-19 with 116,773 deaths have been reported in Poland. According to WHO, a total of 54,662,485 vaccine doses have been administered. New variants emerge that become dominant. The aim of this study was a comparison of antibody level after infection caused by Delta and Omicron variants. The study included 203 persons who underwent mild COVID-19 despite two doses of vaccine. The obtained results indicate that a significantly lower titer was observed in patients with the Omicron variant infection. Therefore, these patients may be at risk of reinfection with new strains of the Omicron variant. Due to the possibility of reinfection, booster vaccinations are necessary. Further epidemiological and clinical studies are necessary to develop new prevention strategies.https://www.mdpi.com/2076-393X/10/10/1728SARS-CoV-2COVID-19SARS CoV-2 antibodyNCPRBDS2
spellingShingle Agata Błaszczuk
Aleksander Michalski
Dominika Sikora
Maria Malm
Bartłomiej Drop
Małgorzata Polz-Dacewicz
Antibody Response after SARS-CoV-2 Infection with the Delta and Omicron Variant
Vaccines
SARS-CoV-2
COVID-19
SARS CoV-2 antibody
NCP
RBD
S2
title Antibody Response after SARS-CoV-2 Infection with the Delta and Omicron Variant
title_full Antibody Response after SARS-CoV-2 Infection with the Delta and Omicron Variant
title_fullStr Antibody Response after SARS-CoV-2 Infection with the Delta and Omicron Variant
title_full_unstemmed Antibody Response after SARS-CoV-2 Infection with the Delta and Omicron Variant
title_short Antibody Response after SARS-CoV-2 Infection with the Delta and Omicron Variant
title_sort antibody response after sars cov 2 infection with the delta and omicron variant
topic SARS-CoV-2
COVID-19
SARS CoV-2 antibody
NCP
RBD
S2
url https://www.mdpi.com/2076-393X/10/10/1728
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