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First page of Tuberculosis

Tuberculosis (TB) is an infectious disease that has coevolved with humans and has been described in human records at least since Neolithic times, 10,000 BCE, when the development of farming began. Tuberculosis is typically caused by Mycobacterium tuberculosis and occasionally by Mycobacterium bovis and Mycobacterium africanum. The most frequently infected organs are the lungs, although other modes of infection with M tuberculosis can occur by contamination of an open wound, such as an insect bite or an abrasion of the skin. Congenital infection occurs either transplacentally or by inhalation of infected amniotic fluid at the time of delivery. Infection...

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