Materials and methods:
A cross sectional study was performed on 44 hemodialysis patients who had been on dialysis thrice a week for at least 2 months. Quantitation of tetanus-specific antibodies was achieved by ELISA technique. Then, for Manteaux test 0.1ml of 1/10 saline diluted solution of tetanus and diphtheria toxoid was injected intradermally to the volar surface of the shunt-free arm. Induration was recorded 48-72h and 7-9 days after the injection.