How Pulmonary TB Develops
Tubercular infection typically goes through three stages in the human being:
- The first stage, called "Early Infection", often heals without being noticed or might be passed off as a "cold or flu".
- The second stage of TB, called "Dormant TB" or "Sleeping TB", occurs when germs remain in the body and may be wide spread, but seem to have no effect on the health of their host.
- Finally, a third stage of TB may develop when this dormant infection "wakes up" and causes sores in the lungs and other parts of the body. This third stage is referred to as "Active TB".