Prevalence of primary and acquired resistance of Mycobacterium tuberculosis to antituberculosis drugs in Benin after 12 years of short-course chemotherapy

Int J Tuberc Lung Dis. 1999 Jun;3(6):466-70.


Setting: Benin National Tuberculosis Programme, West Africa.

Objective: To measure the prevalence of primary and acquired resistance of Mycobacterium tuberculosis to the antituberculosis drugs isoniazid, rifampicin, ethambutol and streptomycin in Benin from 1994-1995, after 12 years of short-course chemotherapy regimens.

Methods: Prospective study by cluster sampling according to the methodology recommended by the International Union Against Tuberculosis and Lung Disease (IUATLD) and the World Health Organization (WHO).

Results: The survey of primary resistance included 333 strains, of which 28 (8.4%) were drug-resistant, one to both rifampicin and isoniazid (multidrug-resistant). For acquired resistance, out of 57 strains tested 26 (45.6%) were resistant, six of which (11%) were multidrug-resistant.

Conclusion: Despite the considerable increase in the number of tuberculosis cases observed in recent years (52% between 1987 and 1995), direct observation of patients taking their antituberculosis drugs during the intensive phase of treatment has limited the development of drug resistance in Benin.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Adult
  • Africa / epidemiology
  • Age Distribution
  • Aged
  • Antitubercular Agents / pharmacology
  • Antitubercular Agents / therapeutic use*
  • Child
  • Child, Preschool
  • Developing Countries
  • Drug Administration Schedule
  • Drug Resistance, Multiple*
  • Female
  • Health Surveys
  • Humans
  • Infant
  • Male
  • Microbial Sensitivity Tests
  • Middle Aged
  • Mycobacterium tuberculosis / drug effects*
  • Prevalence
  • Sex Distribution
  • Tuberculosis, Multidrug-Resistant / drug therapy
  • Tuberculosis, Multidrug-Resistant / epidemiology*
  • Tuberculosis, Pulmonary / drug therapy*
  • Tuberculosis, Pulmonary / epidemiology*


  • Antitubercular Agents