Why hasn’t TB evolved to a harmless bacteria?

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As most bacteria evolve to a less deatly version of itself to promote spreading, why hasn’t TB evolved to a more harmless bacteria? It’s so old, so there was plenty of time. Killing the host seems pointless in a evolutionary sense.

Thanks!

In: Biology

9 Answers

Anonymous 0 Comments

It has, while it kills a few( relative to the people it infects) its spreads quickly, about 25% of the worlds population has latent TB

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