Passive Transfer of Tuberculin Sensitivity to Patients with Sarcoidosis

STUDIES in various countries agree that approximately two thirds of patients with sarcoidosis fail to react to second-strength tuberculin — 0.005 mg. of Purified Protein Derivative (PPD) or 1.0 mg. of Old Tuberculin (OT).1 2 3 The failure to react is not merely the result of absence of exposure to tuberculous infection, since patients with sarcoidosis proved unable to develop and maintain tuberculin sensitivity in normal fashion after BCG...