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[Drug-resistant tuberculosis at a general hospital]
P Miralles Martín1, S Moreno Guillén, F Parras Vázquez
1Unidad de Enfermedades Infecciosas-VIH, Hospital General Universitario Gregorio Marañón, Madrid.
Revista Clinica Espanola
|January 1, 1996
Summary
Drug resistance in Mycobacterium tuberculosis isolates remains low in this general hospital, with no significant association found with HIV infection. This indicates current treatment strategies are largely effective against drug-resistant tuberculosis.
Area of Science:
- Microbiology
- Infectious Diseases
- Public Health
Context:
- Tuberculosis (TB) remains a significant global health challenge, with drug resistance complicating treatment outcomes.
- Understanding drug resistance patterns is crucial for effective TB control strategies, especially in diverse patient populations.
- The co-occurrence of TB and HIV infection presents unique challenges in diagnosis and management.
Purpose:
- To determine the prevalence of drug-resistant Mycobacterium tuberculosis (M. tuberculosis) isolates in a general hospital setting.
- To assess the potential association between drug resistance in M. tuberculosis and HIV infection status.
- To evaluate susceptibility patterns to eight key anti-TB drugs.
Summary:
- A 4-year study (1990-1993) analyzed 760 M. tuberculosis isolates for drug susceptibility.
- Overall, 5.5% of isolates showed resistance to at least one drug; resistance to isoniazid (3.3%) and rifampin (1.6%) were most common.
- While HIV-positive patients had a slightly higher incidence of resistant isolates (7.3%) compared to HIV-negative patients (4.6%), the difference was not statistically significant. No isolates were resistant to ofloxacin.
Impact:
- The findings suggest a low prevalence of drug-resistant tuberculosis in this hospital, indicating effective control measures.
- The study highlights the importance of ongoing surveillance for drug resistance patterns in M. tuberculosis.
- The lack of a significant association with HIV infection suggests that resistance may be driven by other factors in this setting.