title: A randomized comparison between early and late vaccination with tetanus toxoid vaccine after allogeneic BMT.
abstract: Forty-five adult HLA-matched sibling BMT recipients were randomized to receive tetanus toxoid (TT) vaccine at 6, 8 and 14 months (early group, n = 23) or at 18, 20 and 26 months after BMT (late group, n = 22). At 6 months after BMT, prior to the first vaccination, 90% of the early group patients had a protective tetanus antibody concentration of > or = 0.1 HU/ml (passive haemagglutination test) but only 70% of the late group patients did so at 18 months after BMT. The antibody responses 1 month after each of the three TT vaccine doses were similar in the two vaccination groups, except that after the first dose, four-fold responses occurred more frequently in the late group. All vaccinated patients achieved the protective antibody concentration of > or = 0.1 HU/ml. In the late group the recipient antibody responses after the first and second vaccine doses correlated with the donor anti-TT level. A tetanus vaccination schedule consisting of three vaccine doses is equally immunogenic when started at 6 or 18 months after BMT. Donor immunity against tetanus may influence recipient responses to TT vaccination.
authors.affiliation: Department of Medicine, Helsinki University Central Hospital, Finland.
authors.forename: T
authors.initials: T
authors.lastname: Parkkali
authors.forename: R M
authors.initials: RM
authors.lastname: Olander
authors.forename: T
authors.initials: T
authors.lastname: Ruutu
authors.forename: K
authors.initials: K
authors.lastname: Vuontela
authors.forename: L
authors.initials: L
authors.lastname: Volin
authors.forename: J
authors.initials: J
authors.lastname: Eskola
authors.forename: P
authors.initials: P
authors.lastname: Ruutu
mesh_terms: D000293:Adolescent; D000328:Adult; D016026:Bone Marrow Transplantation / Q000009:adverse effects*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D013742:Tetanus / Q000209:etiology / Q000517:prevention & control*; D013745:Tetanus Toxoid / Q000008:administration & dosage* / Q000276:immunology; D014611:Vaccination
chemical_list: D013745:Tetanus Toxoid