Tuberculosis (TB) is an infectious disease caused by bacteria that are spread from person to person through the air.
TB usually affects the lung (pulmonary TB), but it can also affect other parts of the body, such as the brain, the kidneys, or the spine (extra pulmonary TB).
TB germs are expelled into the air when a person with TB infection of the lungs coughs or sneezes. These germs can stay in the air for several hours, depending on the environment. Persons who breathe in the air containing these TB germs can become infected; this is called TB infection. When the immunity of a person with TB infection weakens they may develop TB disease.
A person suspected to have TB disease should submit 2 sputum samples for examination. One sample should be on the spot and the other early in the morning before taking breakfast.
Taking a combination of several drugs for 6 months can treat TB disease. It is very important that people who have TB disease complete the treatment course, and take the drugs exactly as prescribed to avoid recurrence of the disease or development of resistance to the drugs.
TB that is resistant to drugs is harder and more expensive to treat. It is important that the health worker meets with regularly the patient in the course of treatment to monitor their progress.
Irregular treatment can lead to drug resistance TB. MDR-TB Multi Drug Resistant-TB is highly infectious. It is about 100 times more expensive to treat, with treatment taking 24 months in strict isolation wards and no guarantee for cure.
