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| http://dx.doi.org/10.1056/NEJMc2107799 | DOI Listing |
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Novel oral adjuvant to enhance cytotoxic memory like NK cell responses in HIV vaccine platform.
NPJ Vaccines
January 2025
Department of Microbial Infection and Immunity, College of Medicine, The Ohio State University, Columbus, OH, USA.
Natural killer (NK) cell-driven effector mechanisms, such as antibody-dependent cell-mediated cytotoxicity, emerged as a secondary correlate of protection in the RV144 HIV vaccine clinical trial, the only vaccine thus far demonstrating some efficacy in human trials. Therefore, leveraging NK cells with enhanced cytotoxic effector responses may bolster vaccine-induced protection against HIV. Here, we investigated the effect of orally administering indole-3-carbinol (I3C), an aryl hydrocarbon receptor (AHR) agonist, as an adjuvant to an RV144-like vaccine platform in a mouse model.
View Article and Find Full Text PDFVariability in Vaccine Response and Trajectory in Early Childhood and Association with Demographic Variables, Antibiotic Exposure and Infection Proneness.
J Infect Dis
January 2025
College of Mathematical Sciences, College of Science, Rochester Institute of Technology, Rochester, NY.
Introduction: We sought to explore the variability of antibody responses to multiple vaccines during early life in individual children, assess the trajectory of each child longitudinally, determine the associations of demographic variables and antibiotic exposures with vaccine-induced immunity, and link vaccine responsiveness to infection proneness.
Methods: In 357 prospectively-recruited children, age six through 36 months, antibody levels to 13 routine vaccine antigens were measured in sera at multiple time points and normalized to their respective protective thresholds to categorize children into four groups: very low, low, normal, and high vaccine responder. Demographic variables and frequency of antibiotic exposure data were collected.
Expert consensus on the benefits of neuraminidase in conventional influenza vaccines: a Delphi study.
BMC Infect Dis
January 2025
Patient-Centered Research, Evidera, London, UK.
Background: Seasonal vaccination is the mainstay of human influenza prevention. Licensed influenza vaccines are regularly updated to account for viral mutations and antigenic drift and are standardised for their haemagglutinin content. However, vaccine effectiveness remains suboptimal.
View Article and Find Full Text PDFVaccine-induced T cell responses control Orthoflavivirus challenge infection without neutralizing antibodies in humans.
Nat Microbiol
January 2025
Program in Emerging Infectious Diseases, Duke-NUS Medical School, Singapore, Singapore.
T cells have been identified as correlates of protection in viral infections. However, the level of vaccine-induced T cells needed and the extent to which they alone can control acute viral infection in humans remain uncertain. Here we conducted a double-blind, randomized controlled trial involving vaccination and challenge in 33 adult human volunteers, using the live-attenuated yellow fever (YF17D) and chimeric Japanese encephalitis-YF17D (JE/YF17D) vaccines.
View Article and Find Full Text PDFNationwide population-based infection- and vaccine-induced SARS-CoV-2 antibody seroprevalence in Germany in autumn/winter 2021/2022.
Euro Surveill
January 2025
RKI-SOEP-2 Study Group is acknowledged at the end of the article.
BackgroundThe first Corona Monitoring Nationwide (RKI-SOEP) study (October 2020-February 2021) found a low pre-vaccine SARS-CoV-2 antibody seroprevalence (2.1%) in the German adult population (≥ 18 years).AimThe objective of this second RKI-SOEP (RKI-SOEP-2) study in November 2021-March 2022 was to estimate the prevalence of SARS-CoV-2-specific anti-spike and/or anti-nucleocapsid (anti-N) IgG antibodies (combined seroprevalence), past infection based on infection-induced seroprevalence (anti-N), and basic immunisation (at least two antigen contacts through vaccination or infection) in individuals aged ≥ 14 years.
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