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Background: Patients with chronic hepatitis C virus (HCV) do not respond to hepatitis B virus (HBV) vaccination as efficiently as the general population. We assessed if revaccination after HCV treatment resulted in improved response.
Methods: Previous HBV vaccine nonresponders were prospectively recruited for revaccination after HCV eradication. Hepatitis B surface antibody (HBsAb) testing was performed 1 month after series completion.
Results: Follow-up HBsAb testing was performed in 31 of 34 enrolled patients with 21 (67.7%) reactive results. There were no significant differences in HBsAb reactivity based on age, sex, race, or advanced fibrosis presence.
Conclusions: HBV vaccine nonresponders should be considered for revaccination following HCV cure.
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http://dx.doi.org/10.1093/infdis/jiad301 | DOI Listing |
Nat Commun
August 2025
Center for Vaccines and Immunity, The Research Institute at Nationwide Children's Hospital, Columbus, OH, USA.
An effective vaccine for the hepatitis C virus (HCV) remains an unmet medical need. There is no animal model for assessing HCV vaccines; however, rodent hepacivirus (RHV) infection in laboratory rats recapitulates the lifelong chronic hepatotropic infection and immune evasion of HCV. Here, we designed a live-attenuated vaccine (LAV) for RHV and determined its immunogenicity and efficacy for preventing chronic infection.
View Article and Find Full Text PDFBMC Public Health
February 2025
Diretor do Programa Nacional de Imunizações, Ministério da Saúde, Secretaria de Vigilância em Saúde e Ambiente, Departamento de Doenças Imunopreveníveis. Doutor em Saúde Coletiva pela Faculdade de Medicina da Universidade de São Paulo - FMUSP, Ministério da Saúde, Brasília, Brazil.
Objective: To analyze the classification of the risk of transmission of vaccine-preventable diseases in Brazilian municipalities before and after the National Movement for Vaccination and Multivaccination proposed by the Ministry of Health.
Methods: This is an epidemiological, ecological study using secondary data on vaccination coverage, dropout rates, and homogeneity of vaccination coverage (HCV) for ten immunobiologicals recommended for children under 2 years of age. The study aims to compare the years 2022 and 2023 in Brazil.
Eur J Immunol
January 2025
Pandemic Sciences Institute, Nuffield Department of Medicine, University of Oxford, Oxford, UK.
CD4 T cells have been established as central orchestrators of cellular and humoral immune responses to infection or vaccination. However, the need for CD4 T cell help to generate primary CD8 T cell responses is variable depending on the infectious agent or vaccine and yet consistently required for the recall of CD8 T cell memory responses or antibody responses. Given the deployment of new vaccine platforms such as nucleoside-modified mRNA vaccines, we sought to elucidate the requirement for CD4 T cell help in the induction of cellular and antibody responses to mRNA and adenovirus (Ad)-vectored vaccines against SARS-CoV-2.
View Article and Find Full Text PDFJ Med Virol
July 2024
Department of Infectious Diseases, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
The genetic diversity of killer cell immunoglobulin-like receptors (KIRs) and human leukocyte antigen (HLA) genes influences the host's immune response to viral pathogens. This study aims to explore the impact of five single nucleotide polymorphisms (SNPs) in KIR3DL2 and HLA-A genes on hepatitis C virus (HCV) infection. A total of 2251 individuals were included in the case-control study.
View Article and Find Full Text PDFPLoS One
May 2024
Department of Epidemiology, School of Global Public Health, New York University, New York, NY, United States of America.
Background: Persons who inject drugs (PWID) may be unengaged with healthcare services and face an elevated risk of severe morbidity and mortality associated with COVID-19 due to chronic diseases and structural inequities. However, data on COVID-19 vaccine uptake, particularly booster vaccination, among PWID are limited. We examined COVID-19 vaccine uptake and factors associated with booster vaccination among PWID in New York City (NYC).
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