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| http://dx.doi.org/10.1016/j.medine.2021.04.009 | DOI Listing |
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Low Neutralization of SARS-CoV-2 Omicron BA5248, XBB15 and JN1 by Homologous Booster and Breakthrough Infection.
J Med Virol
February 2025
Key Laboratory of Artificial Organs and Computational Medicine in Zhejiang Province, Shulan International Medical College, Zhejiang Shuren University, Hangzhou, Zhejiang, P. R. China.
Immunity against Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) can be induced through either infection with the virus or vaccination, providing protection against reinfection or reducing the risk of severe clinical outcomes. In this study, we recruited 172 volunteers who received different vaccination regimens, including 124 individuals who had recovered from breakthrough infections caused by the Omicron variant (27 with 2 doses, 49 with 3 doses, and 48 with 4 doses) and 48 healthy donors who did not experience breakthrough infections (all of whom received a fourth dose during the infection wave). We measured neutralizing antibody levels against Omicron BA.
View Article and Find Full Text PDFSARS-COV-2 re-infection and incidence of post-acute sequelae of COVID-19 (PASC) among essential workers in New York: a retrospective cohort study.
Lancet Reg Health Am
February 2025
World Trade Center Health Program, Renaissance School of Medicine, Stony Brook University, NY, USA.
Background: After surviving Coronavirus Disease 2019 (COVID-19), some people develop symptoms known as post-acute sequelae of COVID-19 (PASC). PASC is an emerging phenomenon yet to be fully understood, and identifying risk factors has been challenging. This study investigated the association between the number of COVID-19 episodes and the incidence of PASC among essential workers.
View Article and Find Full Text PDFScreening for immunodominant epitopes of SARS-CoV-2 based on CD8 T cell responses from individuals with HLA-A homozygous alleles.
Mol Immunol
January 2025
Department of Medical Laboratory Center, General Hospital of Central Theater Command, Wuhan, Hubei 430015, PR China. Electronic address:
Purpose: SARS-CoV-2-specific CD8 cytotoxic T lymphocytes (CTLs) are crucial in viral clearance, disease progression, and reinfection control. However, numerous SARS-CoV-2 immunodominant CTL epitopes theoretically are still unidentified due to the genetic polymorphism of human leukocyte antigen class I (HLA-I) molecules.
Methods: The CTL epitopes of SARS-CoV-2 were predicted by the epitope affinity and immunogenicity prediction platforms: the NetMHCpan and the PromPPD.
COVID-19 Vaccine Booster Dose Fails to Enhance Antibody Response to Omicron Variant in Reinfected Healthcare Workers.
Viruses
January 2025
Department of Microbiology, Clínica Universidad de Navarra, 31008 Pamplona, Spain.
The emergence of new variants and diverse vaccination regimens have raised uncertainty about vaccine effectiveness against SARS-CoV-2. This study aims to investigate the impact of Omicron primo-/reinfection and primary vaccination schedules on the immunogenicity of an mRNA-based booster dose over a six-month period. We conducted a prospective cohort study to assess the durability and level of antibodies of 678 healthcare workers fully vaccinated against COVID-19.
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