Active Disease and Latent TB Infection

Active TB Disease

Latent TB Infection

Can be spread
to others
Yes, through droplets in the air No, TB is present,
but “inactive”.
Chest x-ray Abnormal findings;
will show signs of damage

Abnormal findings

rarely seen

Sputum Test
(SSM)
Test may be positive Test will be negative
Antibiotic
treatment
Yes, to treat
active disease
Yes, to prevent
active disease