TB is caused by bacteria called Mycobacterium tuberculosis (M.tuberculosis). TB is spread through airborne contact and therefore it primarily infects the respiratory system (mainly the lungs). The bacteria enter the upper respiratory tract (the nose and mouth) and travel down into the tiny air sacs (alveoli) in the lungs. While in the alveoli, the bacteria multiply and can eventually enter into the bloodstream, where they are distributed throughout the body. In most cases, if you become infected with TB, the immune system will effectively respond to the infection. If the immune system is unable to fight off the infection, then you may go on to develop TB disease either now or in the future.
A Rough Guide to TB
This book provides information about TB, how you can contract it and ways of reducing the risk of becoming infected. There are also chapters covering the various tests (diagnostics and monitoring) and what treatment and vaccines are available.
While learning about TB, this book will help you to gain an understanding of the medical procedures that may be involved and therefore what to expect. We hope this will remove some of the anxiety that many people have.