Community-based therapy for multidrug-resistant tuberculosis in Lima, Peru

Area of Science:

• Infectious Diseases
• Public Health
• Global Health

Background:

• Multidrug-resistant tuberculosis (MDR-TB) poses a significant global health challenge, particularly in low-income countries.
• Effective MDR-TB therapy is often perceived as too expensive and logistically difficult for resource-poor settings.
• This study evaluated community-based MDR-TB treatment in Lima, Peru.

Purpose of the Study:

• To assess the feasibility and outcomes of community-based, ambulatory treatment for multidrug-resistant tuberculosis (MDR-TB).
• To identify predictors of treatment failure or death in patients with chronic MDR-TB.
• To demonstrate that effective MDR-TB treatment can be achieved outside specialized referral centers.

Main Methods:

• Retrospective chart review of 75 patients with chronic MDR-TB receiving individualized ambulatory treatment.
• Analysis of treatment regimens, patient outcomes, and predictors of failure or death.
• Inclusion of patients treated between August 1996 and February 1999 in northern Lima.

Main Results:

• Mycobacterium tuberculosis strains were resistant to a median of six drugs.
• Of 66 patients completing ≥4 months of therapy, 83% achieved probable cure.
• Low hematocrit and body-mass index predicted poor outcomes; pyrazinamide and ethambutol use was associated with favorable outcomes.

Conclusions:

• Community-based outpatient treatment for MDR-TB can achieve high cure rates, even in resource-limited environments.
• Early initiation of appropriate MDR-TB therapy is crucial for preserving drug susceptibility and improving treatment success.
• This model demonstrates the potential for effective MDR-TB management in underserved populations.