The impact of HIV infection on recurrence of tuberculosis in South African gold miners
RESULTS: Recurrence occurred in 37 HIV-positive and 46 HIV-negative men. HIV infection was associated with a significantly higher recurrence rate (8.2 vs 2.2 per 100 person-years; multivariate-adjusted incidence rate ratio [IRR] 4.9, 95% confidence interval [CI] 3.0–8.1), as were post-tuberculous scarring (multivariate-adjusted IRR 1.6 for one or two scarred lung zones, 4.0 for three or more zones; test for trend P < 0.001) and drug resistance (multivariate-adjusted IRR 2.7, 95%CI 1.01–7.4). The recurrence rate was significantly higher following treatment with RHZ than RHZE (multivariate-adjusted IRR 2.1, 95%CI 1.1–4.0). The difference between regimens needs to be interpreted with caution, however, as allocation was not randomised.
CONCLUSION: The high recurrence rate among HIV-positive men requires further investigation to distinguish relapse from re-infection as the predominant cause, leading to consideration of further intensification of the initial regimen or use of secondary prophylaxis.
Document Type: Regular Paper
Affiliations: 1: Aurum Health Research, Welkom, South Africa 2: Medical Research Council, Durban, South Africa 3: Department of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, UK
Publication date: 2000-05-01
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