Reduced immune responses to hepatitis B primary vaccination in obese individuals with nonalcoholic fatty liver disease (NAFLD)
npj Vaccines·
- DOI
- 10.1038/s41541-020-00266-4
- PMID
- 33431890
- PMCID
- PMC7801497
- OpenAlex
- W3120401733
- Study type
- Journal article
- Publisher
- Springer Science and Business Media LLC
- Article type
- journal-article
- Integrity
- current
Why this research matters now
The findings suggest that obese individuals with NAFLD may have suboptimal immune responses to standard hepatitis B vaccination, potentially requiring modified vaccination strategies or monitoring in this population.
Structured evidence summary
Research question
The study assessed hepatitis B vaccine efficacy in adults with nonalcoholic fatty liver disease, stratified by obesity risk class.
Study design
Sixty-eight HBV-naïve adults with NAFLD completed a three-dose HBV or HBV/HAV vaccine series through the Canadian HBV network. Anti-HBs titers were measured one to three months after the third dose, and T-cell responses were assessed in a subset of 31 participants. A mouse model of NAFLD was also used to study immune response.
Population and setting
The study enrolled HBV-naïve adults with NAFLD in Canada, stratified into low-risk obesity (BMI less than 35) and medium/high-risk obesity (BMI 35 or greater) groups.
Main findings
Anti-HBs titers were significantly lower in medium/high-risk obesity patients compared to low-risk obesity patients. High-risk obesity cases also exhibited reduced vaccine-specific CD4+ T-cell responses and dysfunctional follicular T-helper cells. The NAFLD mouse model similarly showed lower anti-HBs levels and T-cell responses versus controls.
Public-health relevance
The findings suggest that obese individuals with NAFLD may have suboptimal immune responses to standard hepatitis B vaccination, potentially requiring modified vaccination strategies or monitoring in this population.
Important limitations
This summary is limited to the supplied single-article abstract and metadata. The original paper is required for decision-grade interpretation, including details on sample selection, potential confounders, statistical power, and generalizability beyond the Canadian cohort.
GIDS interpretation
This peer-reviewed journal article on vaccine effectiveness in NAFLD patients was published in npj Vaccines and is indexed under hepatitis B, treatment, vaccination, and vaccine effectiveness topics. It may inform clinical guidance for at-risk populations but does not represent surveillance or outbreak data.
Related GIDS surveillance
Literature context does not validate, explain, or change a surveillance signal. Exact and contextual relationships are shown separately.
Evidence relationships
This article has 12 auditable classifier relationships to diseases, places, topics, and study design.