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Infect Genet Evol. 2012 Jun;12(4):678-85. doi: 10.1016/j.meegid.2011.08.010. Epub 2011 Aug 17.

Old and new selective pressures on Mycobacterium tuberculosis.

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  • 1Swiss Tropical and Public Health Institute, Basel, Switzerland.

Abstract

Tuberculosis (TB) has been affecting humans for millennia. There is increasing indication that human-adapted Mycobacterium tuberculosis complex (MTBC) has been co-evolving with different human populations. Some of the most important drivers of MTBC evolution have been the host immune response and human demography. These old selective forces have shaped many of the features of human TB we see today. Two new selective pressures have emerged only a few decades ago, namely HIV co-infection and the use of anti-TB drugs. Here we discuss how the emergence of HIV/TB and drug resistance could impact the long-term balance between MTBC and its human host, and how these changes might influence the future evolutionary trajectory of MTBC.

Copyright © 2011 Elsevier B.V. All rights reserved.

PMID:
21867778
[PubMed - indexed for MEDLINE]
PMCID:
PMC3253320
Free PMC Article
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