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Tuberculosis , or TB, is a bacterial infection caused by the Mycobacterium tuberculosisbacterium. The bacteria typically infect the lungs, but they can infect other areas of the body, like the kidney, spine, or brain.
TB is spread from the lungs of a person with TB through coughing. When a person coughs or sneezes, the bacteria travel into the air and may be inhaled by a person standing nearby. TB is most commonly spread through repeated contact, such as within a family. However, short-term exposure can also cause TB.
Children are at increased risk of getting TB. Because of these risks, preventing TB through vaccination is very important to children’s health in countries where TB is common
At one point, TB was the leading cause of death in the US. As treatments were developed, the...