Multidrug- and extensively drug-resistant tuberculosis in Africa and South America: epidemiology, diagnosis and management in adults and children

Clin Chest Med. 2009 Dec;30(4):667-83, vii-viii. doi: 10.1016/j.ccm.2009.08.019.

Abstract

Available data show that Africa, together with the Americas and western and central Europe, reported the lowest prevalence of multidrug-resistant tuberculosis (MDR-TB). However, sub-Saharan Africa has a high TB incidence and the highest human immunodeficiency virus (HIV) prevalence in the world, and because of the high number of TB cases, Africa still presents 14% of the global burden of new MDR-TB cases. Until recently, Africa and South America were deprived of second-line antituberculosis drugs, preventing the development of extensively drug-resistant TB (XDR-TB). Current efforts, introducing improved laboratory infrastructure and second-line TB treatment in resource-limited countries, need to be carried out with care to minimize the development of MDR/XDR-TB in these countries. Recent diagnostic developments now need evaluation and implementation in resource-limited areas, and delays in diagnosis also need to be addressed. Outcomes for MDR/XDR-TB have improved, but prevention of MDR/XDR-TB by early diagnosis and treatment, improvement of adherence, and proper infection control remains the mainstay for the future.

Publication types

  • Review

MeSH terms

  • Adult
  • Africa / epidemiology
  • Antitubercular Agents / therapeutic use*
  • Child
  • Extensively Drug-Resistant Tuberculosis* / diagnosis
  • Extensively Drug-Resistant Tuberculosis* / drug therapy
  • Extensively Drug-Resistant Tuberculosis* / epidemiology
  • Humans
  • Incidence
  • Mycobacterium tuberculosis / drug effects*
  • Mycobacterium tuberculosis / isolation & purification
  • Population Surveillance / methods*
  • Prevalence
  • South America / epidemiology

Substances

  • Antitubercular Agents