What is the prophlaxisIf i was in contact with apatient with open pulmonary TB for ashort period?!! And how much hours can MYcobacterium TBSurvive out side the host ?!
you need a patient with Untreated active pulmonary or laryngeal tuberculosis do Tuberculin skin test (regardless of your BCG vacc status) If tuberculin skin test ≥ 5 mm for nine months treat with isoniazid plus vitamin B6