T Hofman, N Cranswick, P Kuna, et al. Tacrolimus ointment does not affect the immediate response to vaccination, the generation of immune memory, or humoral and cell-mediated immunity in children. Arch Dis Child 2006;91:905–10. A typographical error was introduced into the Aims section of the Abstract of this paper. (TAC-O; n  =  21) should read (TAC-O; n  =  121). In addition, the second sentence of the results section of the paper should read: In total, 232 patients formed the per-protocol population (121 patients in the TAC-O group and 111 patients in the hydrocortisone group) and 44 patients formed the control group.