“…Intestinal barrier impairment and malnutrition are additional risk factors (4). Although the incidence of vaccine-preventable infections in patients with IBD is not well established, severe forms of pneumococcal infection (fulminant sepsis) (5)(6)(7), pneumonia by the varicella-zoster virus (8,9), hepatitis B virus reactivation in patients with latent infection (10, 11), and a high incidence of shingles have all been described (12,13). In addition, there is a high risk for cervical dysplasia and cancer (14,15), particularly in women with Crohn's disease, due to a greater prevalence of infection with the human papillomavirus.…”