[Vaccination against hepatitis B in patients with inflammatory bowel disease: immune response and associated factors.]

Abstract

Objective: Patients with Inflammatory Bowel Disease (IBD) are at increased risk of hepatitis B virus (HBV) infection as well as a lower response to vaccination. This study aimed to analyze the immune response after vaccination against HBV in patients diagnosed with IBD and its associated factors.

Methods: A retrospective observational study was conducted on patients with IBD treated at the vaccination clinic for at-risk patients at the Complejo Hospitalario Universitario de Albacete during the period 2011-2018. Immune response after vaccination and associated factors were determined using logistic regression models.

Results: 231 patients were included. HBV Vaccination had an optimal immune response in 82.7% of the patients. The likelihood of response to vaccination increased in those diagnosed with ulcerative colitis (OR 2.90; 95% CI 1.11-7.61) and decreased with age (80% lower in those aged 40-55 years (OR 0.20; 95% CI 0.05-0.83) and 88% lower in those over 55 years of age (OR 0.12; 95% CI 0.03-0.53) compared to those under 40 years of age) and pharmacological immunosuppression (OR 0.20; 95% CI 0.58-0.71).

Conclusions: The decrease in the immunogenicity of the vaccine against hepatitis B in patients with IBD after the beginning of immunosuppressive treatment, as well as with age, make early vaccination a priority in this kind of patients.