Browsing HIV/AIDS by Journal
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Low uptake of antiretroviral therapy after admission with human immunodeficiency virus and tuberculosis in KwaZulu-Natal, South Africa.(2010-07-01)A prospective cohort study was conducted among human immunodeficiency virus (HIV) infected in-patients with tuberculosis (TB) or other opportunistic infections (OIs) in South Africa to estimate subsequent antiretroviral therapy (ART) uptake and survival.
Performance of FASTPlaqueTB and a modified protocol in a high HIV prevalence community in South Africa.(2009-06)Modifications in the FASTPlaqueTB test protocol have resulted in an increase in the analytical limits of detection. This study investigated whether the performance of a modified prototype was able to increase the detection of smear-negative, culture-positive sputum samples as compared to the first generation FASTPlaqueTB test. Modifications to the FASTPlaqueTB did result in increased detection of smear-negative samples, but this was associated with a decrease in the specificity of the test. Before the FASTPlaqueTB can be considered as a viable replacement for smear microscopy and culture for the identification of tuberculosis, further work is required to resolve the performance issues identified in this study.
Population Differences in Death Rates in HIV-Positive Patients with Tuberculosis.(International Union Against TB and Lung Disease, 2007-10)SETTING: Randomised controlled clinical trial of Mycobacterium vaccae vaccination as an adjunct to anti-tuberculosis treatment in human immunodeficiency virus (HIV) positive patients with smear-positive tuberculosis (TB) in Lusaka, Zambia, and Karonga, Malawi. OBJECTIVE: To explain the difference in mortality between the two trial sites and to identify risk factors for death among HIV-positive patients with TB. DESIGN: Information on demographic, clinical, laboratory and radiographic characteristics was collected. Patients in Lusaka (667) and in Karonga (84) were followed up for an average of 1.56 years. Cox proportional hazard analyses were used to assess differences in survival between the two sites and to determine risk factors associated with mortality during and after anti-tuberculosis treatment. RESULTS: The case fatality rate was 14.7% in Lusaka and 21.4% in Karonga. The hazard ratio for death comparing Karonga to Lusaka was 1.47 (95% confidence interval [CI] 0.9-2.4) during treatment and 1.76 (95%CI 1.0-3.0) after treatment. This difference could be almost entirely explained by age and more advanced HIV disease among patients in Karonga. CONCLUSION: It is important to understand the reasons for population differences in mortality among patients with TB and HIV and to maximise efforts to reduce mortality.
Providing HIV care for co-infected tuberculosis patients: a perspective from sub-Saharan Africa.(2009-01)Human immunodeficiency virus/acquired immune-deficiency syndrome (HIV/AIDS) and tuberculosis (TB) are overlapping epidemics that cause an immense burden of disease in sub-Saharan Africa. This region is home to the majority of the world's co-infected patents, who have higher TB case fatality and recurrence rates than patients with TB alone. A World Health Organization interim policy has been developed to reduce the joint burden of TB-HIV disease, an important component of which is provision of HIV care to co-infected patients. This review focuses on HIV testing of TB patients and, for those who are HIV-positive, the administration of adjunctive cotrimoxazole preventive treatment (CPT) and antiretroviral treatment (ART). HIV testing has moved from a voluntary, client-initiated intervention to one that is provider-initiated and a routine part of the diagnostic work-up. The efficacy and safety of CPT in HIV-infected patients is now well established, and this is an essential part of the package of HIV care. ART scale-up in Africa can substantially improve outcomes in co-infected patients. However, the clinical and programmatic challenges of combining ART with anti-tuberculosis treatment need to be resolved to realise the full potential of this benefit. These include the optimal time to start ART, how best to combine rifampicin-containing regimens with first-line and second-line ART regimens, management of immune reconstitution disease, the role of isoniazid preventive treatment with ART after TB treatment completion, and where and how to provide combined treatment to best suit the patient. Clinical and operational studies in the next few years should help to resolve some of these issues.