Multidrug-resistant tuberculosis in Western Australia, 1998-2012

Area of Science:

• Epidemiology
• Infectious Diseases
• Public Health

Background:

• Multidrug-resistant tuberculosis (MDR-TB) poses a significant global health challenge.
• Understanding the specific epidemiology and clinical course of MDR-TB in Western Australia is crucial for effective management.
• Drug-susceptible tuberculosis (TB) serves as a baseline for comparison to highlight MDR-TB's unique characteristics.

Purpose of the Study:

• To delineate the epidemiology, clinical features, healthcare utilization, treatment, and outcomes of MDR-TB cases in Western Australia.
• To compare these aspects of MDR-TB cases with a matched cohort of drug-susceptible TB patients.
• To inform public health strategies and clinical management of MDR-TB.

Main Methods:

• A retrospective case-control study design was employed.
• Data were collected for all MDR-TB cases notified in Western Australia between January 1, 1998, and December 31, 2012.
• Matched controls with drug-susceptible TB were used for comparison, with data sourced from the Western Australia Tuberculosis Control Program.

Main Results:

• Sixteen MDR-TB cases were identified, representing 1.2% of all TB notifications.
• MDR-TB patients were more likely to have a history of previous TB treatment and experienced longer delays in receiving effective therapy.
• While MDR-TB patients required more frequent hospitalization and longer treatment durations with more adverse effects, treatment success rates were comparable to drug-susceptible TB patients.

Conclusions:

• MDR-TB, though uncommon in Western Australia, presents distinct management challenges.
• Effective treatment strategies can lead to successful outcomes in MDR-TB patients, even with initial therapeutic delays.
• Specialized TB services are essential for the comprehensive management and prevention of MDR-TB.