Traumatic catheterization or soon after transurethral resection (TUR) or biopsy of bladder tumor (associated w/ haematuria) in 7-14 days. Immunosuppressed patients. Active TB. Febrile illness, UTI or gross hematuria. Current or previous evidence of systemic BCG reactions. Fever of unknown origin. Concomitant immunosuppressant therapy or radiation. Pregnancy.