![]() ![]() The World Health Organization (WHO) estimates that, annually, around 8 million people develop active tuberculosis globally, and nearly 2 million people die from the disease. The lung is the most commonly involved organ, other organ systems commonly affected include the gastrointestinal system, the musculoskeletal system, the lymphoreticular system, skin, liver, and the reproductive system. Reactivation Tb is the most common form of active tuberculosis, representing 90% of the cases. Reactivation tuberculosis, as the name suggests, is the reactivation of contained mycobacterial infection. Primary tuberculosis occurs when the immune system is unable to defend against the Mycobacterium tuberculosis bacterium (MTB) infection. Accordingly, active tuberculosis could be primary tuberculosis or reactivation tuberculosis. Active tuberculosis is a multiorgan disease caused by primary infection or as a reactivation of latent tuberculosis. ![]()
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