Tuberculosis (patient information)

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What is Tuberculosis?

Tuberculosis, or TB is a bacterial infection that kills 3 million people worldwide, more people than any other infection in the world. Approximately one-third of the world is infected, and 15 million people in the US. Active tuberculosis kills 60% of the time if not treated, but treatment cures 90% of patients.

Most people are infected with TB have latent TB. This means that the bacteria is controlled by the body's immune system. People with latent TB do not have symptoms and cannot transmit TB to other people. However, later if the infected person has a weakened immune system, from AIDS or another infection, the bacteria can break out leading to active TB.

What are the symptoms of Tuberculosis?

Latent TB is held in the alveoli of the lungs. As active TB develops, the bacteria spreads out from the alveoli to the lungs and then to other organ systems, killing cells and making granulomas. As a result, depending on what organ system is affected, the symptoms can be very different. Some symptoms of early active TB include:

• weight loss
• fever
• night sweats
• loss of appetite

How is Tuberculosis spread?

Tuberculosis is spread from person to person through the air as person with active tuberculosis coughs or sneezes. Tuberculosis is not often spread on surfaces or by objects of a person infected with active tuberculosis.

Where to find medical care for Tuberculosis

Directions to Hospitals Treating Tuberculosis