Tuberculosis (TB) is among the top 10 infectious diseases in the world, ranking at the top three spot along with malaria and HIV/AIDS. Tuberculosis causes nearly 2 million deaths every year, and the World Health Organization (WHO) estimates that nearly 1 billion people will be infected between 2000 and 2020 if more effective preventive procedures are not adopted.
What is Tuberculosis (TB)?
TB is a systemic bacterial infection most often found in the lungs. It is mainly caused by mycobacterium tuberculosis. Other mycobacteria such as Mycobacterium bovis, Mycobacterium africanum, Mycobacterium canetti, and Mycobacterium microti can also cause tuberculosis, but these species do not usually affect healthy adults. Over one-third of the world’s population has been exposed to the TB bacterium, and new infections occur at a rate of one per second. It doesnt necessarily happen that a person infected develops the full-blown disease, so asymptomatic, latent TB infection is most common. However, one in ten latent infections will progress to active TB disease, which, if left untreated, kills more than half of its victims.
TB is generally classified into...
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