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Latent TB can develop into Active TB. When the TB is latent, the mycobacteria causing the infection has been targeted and effectively "trapped" within calcified lumps in the affected organ / tissue. If the immune system becomes weakened for some reason (eg. old age, other disease) then the TB bacteria is often able to break through the lumps, and so becomes active.

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โˆ™ 2010-10-14 21:03:56
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Q: If were treated for latent tb can still develope active tb?
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