Please, someone advise me on the infection control guideline for tuberculosis in settelite dialysis center. My dialysis pt's husband is contracted with TB. He used to stay with her wife just sitting near her during her dialysis. He will spend around 2 to 3 hours inside the clinical area and only about 1 hr outside and at the waiting area. He is positive for TB now. My nurse manager said no action is needed as we can not place the patient (his Wife) in the isolation room because she is not the one with TB. We all staff have the concern of TB transmission. Just recently, 2 Nurses from other DC contracted with TB from their patient. Please kindly advise me what we should do. So much appreciation for your kind suggestions. Thank you.