Issa Al Jahdhami (MD, MRCP) Senior Consultant, Chest Physician. Armed Forces Hospital, Department of Medicine, Muscat, Sultanate of Oman, PO Box 282 PC 124. E-mail: [email protected] Reactivation of Latent Tuberculosis is an important source of active infection with Mycobacterium tuberculosis. Thus, testing for latent TB is one of the important steps in the control of TB disease around the...