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Viewpoint TB diagnostics: what does the world really need?

Karin Weyer1, Susanne Carai, Paul Nunn

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Area of Science:

  • Microbiology
  • Infectious Diseases
  • Diagnostic Technology

Background:

  • Tuberculosis (TB) case detection remains stagnant, with increasing drug resistance.
  • Historically, laboratory services, technology transfer, and diagnostic tools for TB have been under-resourced.
  • The rise in drug-resistant TB and human immunodeficiency virus (HIV) co-infection has spurred diagnostic research.

Purpose of the Study:

  • To review the progress and challenges in TB diagnostic development.
  • To highlight the limitations of conventional methods and the potential of molecular technologies.
  • To discuss the requirements for achieving a point-of-care TB diagnostic test.

Main Methods:

  • Review of current TB diagnostic technologies, focusing on molecular methods.
  • Analysis of the TB diagnostic research pipeline and investment trends.
  • Assessment of factors hindering the development of point-of-care diagnostics.

Main Results:

  • Molecular technologies have largely overcome the limitations of conventional TB diagnosis and drug resistance detection.
  • Despite progress, a widely accessible point-of-care TB test is not yet available.
  • Current strategies and funding may not be sufficient to meet the goal of a point-of-care test.

Conclusions:

  • Modern molecular diagnostics offer significant advantages over traditional methods for TB and drug resistance detection.
  • Achieving a point-of-care TB test necessitates realistic expectations, revised research strategies, and sustained funding.
  • Scaling up TB diagnostics requires simultaneous development of new technologies, optimized use of existing tools, and enhanced treatment capacity.