Immunogenicity of Influenza, Pneumococcal and Hepatitis B Vaccines in IBD Patients Treated With Vedolizumab

Vaccination for pneumococcal pneumonia will be carried out with either the PSV-23 (Pneumovax, Merck, Whitehouse Station, NJ) or the PCV-13 (Prevnar 13, Pfizer, Philadelphia, PA). Either vaccine is administered in a single dose of 0.5 mL intramuscularly.

Influenza vaccination will be carried out with the 2017-2018 trivalent component vaccine (Afluria, Seqirus USA Inc., King of Prussia, PA) or for patients over 65 years of age (Fluzone, Sanofi Pasteur, Swiftwater, PA). Both of these vaccines are administered in a single dose of 0.5 mL intramuscularly.

Hepatitis B vaccination with be carried out with a single antigen, recombinant hepatitis B vaccine (Energix B, GlaxoSmithKline, Research Triangle Park, NC). This vaccine is administered in a three dose series with 1.0 mL given intramuscularly at 0, 1, and 6 months. For patients receiving a booster, a single intramuscular dose of 1.0 mL will be given.