background: prompt diagnosis and treatment of latent tuberculosis (tb) infection (ltbi) are needed to control tb. the aim of the study was to compare the performance of quanti feron-tb test (qft) with conventional tst for the diagnosis of ltbi. methods: in this analytical - comparison study, we enrolled 87 nurses working in teaching hospitals in ahvaz. all study subjects were tested by tst.  ts...

current guidelines suggest that the ppd mantoux tuberculin test should be read after 48 or 72 hours. we have compared the measurements at these time points. a 5-tuberculin unit (tu) ppd mantoux test was administered to 100 subjects (91% with bacillus calmette- guerin scars). induration was measured 48 and 72 hours following the injection. results the measurements made at 72nd hour were signific...

After Mantoux testing with purified protein derivative (PPD) equivalent to 5 tuberculin units (TU), a 28 yr old man developed extensive erythema, induration and proximal lymphangitis. This is the only such case observed after Mantoux testing in approximately 500,000 subjects during 10 yrs in the Greek Army.