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October 18, 2025Proceedings of the National Academy of SciencesOpen Access

Virulence hierarchies within the Mycobacterium tuberculosis complex

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Authors

SDSarah N DanchukSDShannon C. DuffyJSJaryd Sullivan

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Overview

This study compares pathogenicity in M. tuberculosis, M. bovis, and M. orygis, revealing virulence hierarchies.

Key Points

  • Animal-adapted Mycobacterium tuberculosis complex strains exhibit significantly greater virulence compared to M. tuberculosis, impacting human and animal health.
  • Virulence measurements showed that M. bovis and M. orygis resulted in rapid mortality in murine models within 24 days of infection.
  • Comparative assessments were conducted using bovine and murine models, highlighting differences in immunopathology and virulence factors.
  • The study identifies key virulence factors, including ESAT-6 and MPT70, underscoring their impact on tuberculosis research and treatment.

Cite This Study

Danchuk et al. (2025) studied this question.

synapsesocial.com/papers/68f3793258f37cefb60d34adhttps://doi.org/10.1073/pnas.2507104122
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