Mask Requirements for Tuberculosis Patients

Key Distinction: LTBI vs Active TB

• The Centers for Disease Control and Prevention recommends that only patients with active pulmonary or laryngeal TB require masks to prevent transmission of infectious droplet nuclei 1, 2, 3, 4

When Masks ARE Required (Active TB Only)

• Patients with active TB should wear surgical masks when outside isolation rooms to reduce expulsion of droplet nuclei into the air 1, 2, 3, 4
• Patients should never wear respirators with exhalation valves as these do not prevent expulsion of droplet nuclei 1, 2, 3, 4
• Healthcare workers need N95 respirators when entering isolation rooms of patients with active TB, as recommended by the Centers for Disease Control and Prevention 5
• During transport, active TB patients should wear surgical masks or valveless respirators, according to the Centers for Disease Control and Prevention guidelines 6, 5

Common Pitfall to Avoid

• The Centers for Disease Control and Prevention guidelines apply exclusively to patients with active, infectious tuberculosis—not to those with LTBI, and mask requirements should not be confused between the two conditions 1, 7, 2, 6, 3, 4