Article ; Online: SARS-CoV-2 Omicron infection augments the magnitude and durability of systemic and mucosal immunity in triple-dose CoronaVac recipients.
2024 Volume 15, Issue 4, Page(s) e0240723
Abstract: The inactivated whole-virion vaccine, CoronaVac, is one of the most widely used coronavirus disease 2019 (COVID-19) vaccines worldwide. There is a paucity of data indicating the durability of the immune response and the impact of immune imprinting ... ...
Abstract | The inactivated whole-virion vaccine, CoronaVac, is one of the most widely used coronavirus disease 2019 (COVID-19) vaccines worldwide. There is a paucity of data indicating the durability of the immune response and the impact of immune imprinting induced by CoronaVac upon Omicron infection. In this prospective cohort study, 41 recipients of triple-dose CoronaVac and 14 unvaccinated individuals were recruited. We comprehensively profiled adaptive immune parameters in both groups, including spike-specific immunoglobulin (Ig) G and IgA titers, neutralizing activity, B cells, circulating follicular helper T (cTfh) cells, CD4 Importance: There is a paucity of data indicating the durability of the immune response and the impact of immune imprinting induced by CoronaVac upon Omicron breakthrough infection. In this prospective cohort study, the anti-severe acute respiratory syndrome coronavirus 2 adaptive responses were analyzed before and after the Omicron BA.5 infection. Our data provide detailed insight into the protective role of the inactivated COVID-19 vaccine in shaping humoral and cellular immune responses to heterologous Omicron infection. Clinical trial: This study is registered with ClinicalTrials.gov as NCT05680896. |
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MeSH term(s) | Humans ; Immunity, Mucosal ; COVID-19 Vaccines ; COVID-19 ; SARS-CoV-2 ; Breakthrough Infections ; CD8-Positive T-Lymphocytes ; Prospective Studies ; Immunoglobulin G ; Immunoglobulin A ; Antibodies, Viral ; Antibodies, Neutralizing ; Vaccines, Inactivated |
Chemical Substances | sinovac COVID-19 vaccine ; COVID-19 Vaccines ; Immunoglobulin G ; Immunoglobulin A ; Antibodies, Viral ; Antibodies, Neutralizing ; Vaccines, Inactivated |
Language | English |
Publishing date | 2024-03-08 |
Publishing country | United States |
Document type | Journal Article |
ZDB-ID | 2557172-2 |
ISSN | 2150-7511 ; 2161-2129 |
ISSN (online) | 2150-7511 |
ISSN | 2161-2129 |
DOI | 10.1128/mbio.02407-23 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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