Multidrug-resistant tuberculosis in Queensland, Australia: an ongoing cross-border challenge
2018
: SETTINGp: Multidrug-resistant tuberculosis (MDR-TB) is a growing concern worldwide. In Australia, although the incidence of MDR-TB remains low, Queensland is at an increased risk due to its proximity to Papua New Guinea (PNG). OBJECTIVE: To examine the epidemiology, clinical features and outcomes of MDR-TB in Queensland, with a comparison between cross-border PNG and non-cross-border patients. DESIGN: Retrospective case series of all MDR-TB patients in Queensland between 1 January 2000 and 31 December 2014. RESULTS: Ninety-six patients were diagnosed with MDR-TB in Queensland between 2000 and 2014. The majority were cross-border PNG nationals diagnosed within the Torres Straight Protected Zone (n = 73, 76%). Cross-border patients were younger (27.4 vs. 36.3 years, P = 0.02), had spent less time in Australia before diagnosis (<1 vs. 19 months, P < 0.01), had higher rates of smear positivity (67.1% vs. 40%, P = 0.04) and were less likely to have received a second-line injectable agent (45.8% vs. 71.4%, P = 0.05). Cross-border patients had significantly lower rates of treatment success than non-cross-border patients (47.9% vs. 85.7%; P < 0.01). CONCLUSION: MDR-TB cases in Queensland are largely a result of cross-border PNG nationals, with poorer outcomes seen in this cohort. Continued strengthening of the region's TB programmes, with a focus on cross-border patients, is required.
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