| Latent TB Infection |
Active TB Disease |
| TB germs are dormant (asleep) in your body. This phase
can last for a very long time - even decades. |
TB germs are reproducing and spreading in your body,
causing tissue damage. |
| You don't look or feel sick. Your chest x-ray
usually is normal. |
You usually feel sick. Typical symptoms include: cough lasting >3
weeks, weight loss, night sweats, and fever. A chest x-ray and other
tests are needed to diagnose TB disease. |
| You can't spread TB to other people. |
If the TB germs are in your lungs or voicebox, you may
spread TB to other people by coughing, sneezing, talking,
or singing. |
| Usually treated by taking one medicine for 9 months. |
Treated by taking three or four medicines for at least
6 months. |
