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Trop Med Int Health. 2011 Apr;16(4):518-26. doi: 10.1111/j.1365-3156.2011.02731.x. Epub 2011 Feb 1.

Randomised, placebo-controlled trial to evaluate co-trimoxazole to reduce mortality and morbidity in HIV-infected post-natal women in Zambia (TOPAZ).

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1
Medical Research Council Clinical Trials Unit, London, UK. ajn@ctu.mrc.ac.uk

Abstract

OBJECTIVE:

To evaluate the role of prophylactic trimethoprim-sulfamethoxazole (co-trimoxazole) antibacterial prophylaxis in reducing morbidity and mortality in HIV-infected post-natal women in southern Africa.

METHODS:

Double-blind placebo-controlled trial. HIV-infected women with WHO stage 2 or 3 HIV disease who had recently delivered in the Department of Obstetrics and Gynaecology at the University Teaching Hospital, Lusaka, Zambia were randomised to receive daily co-trimoxazole (cotox) or matched placebo daily for the duration of the trial. Participants were followed up for a minimum of 1 year. Primary outcome measures were mortality from any cause or hospital admission and serious adverse events.

RESULTS:

Of 600 women randomised, follow-up information was available from 355 (180 cotox, 175 placebo) participants. Thirty-six (17 cotox, 19 placebo) women died during the trial, and another 11 (5 cotox, 6 placebo) were admitted to hospital. There was no significant difference in the combined event rates between the two treatment arms: HR = 0.82, 95% CI (0.46, 1.45), P = 0.49; morbidity was reduced over a range of symptoms. Secondary analyses of the outcome in babies indicated some evidence of reduced mortality in those whose mothers were allocated cotox.

CONCLUSIONS:

Follow-up rates were poor; there was no evidence that co-trimoxazole prophylaxis reduced mortality or hospital admission rates, although fewer symptoms were reported in the cotox arm. Cotox was safe and well tolerated.

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