People with TB disease of the lungs or airway may be infectious to others until they have received their initial phase of treatment with TB medications. The typical symptoms of TB disease are prolonged cough, weight loss, night sweats, fatigue, fever, and chest pain. When in contact with a patient known or suspected to have active TB disease, place a surgical mask on the patient, if possible, and wear an N95 respirator (or PAPR or SCBA), if one is available. If a respirator is not available, use a surgical mask for yourself.