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Publisher: Public Library of Science
Journal: PLoS ONE
Languages: English
Types: Article
Subjects: Microbial Pathogens, Research Article, Diagnostic medicine, Infectious Diseases, Immunodeficiency Viruses, HIV, HIV immunopathogenesis, Immunology, Bacteremia, Biology and life sciences, Microbiology, wc_503_5, wc_503, wc_503_2, Medicine, Viral Diseases, Bacterial Diseases, Q, Medical Microbiology, Viral Pathogens, R, Clinical immunology, wh_120, Science, HIV clinical manifestations, Medicine and health sciences

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mesheuropmc: human activities, bacterial infections and mycoses
Introduction\ud \ud Blood-stream infection (BSI) is one of the principle determinants of the morbidity and mortality associated with advanced HIV infection, especially in sub-Saharan Africa. Over the last 10 years, there has been rapid roll-out of anti-retroviral therapy (ART) and cotrimoxazole prophylactic therapy (CPT) in many high HIV prevalence African countries.\ud \ud Methods\ud \ud A prospective cohort of adults with suspected BSI presenting to Queen's Hospital, Malawi was recruited between 2009 and 2010 to describe causes of and outcomes from BSI. Comparison was made with a cohort pre-dating ART roll-out to investigate whether and how ART and CPT have affected BSI. Malawian census and Ministry of Health ART data were used to estimate minimum incidence of BSI in Blantyre district.\ud \ud Results\ud \ud 2,007 patients were recruited, 90% were HIV infected. Since 1997/8, culture-confirmed BSI has fallen from 16% of suspected cases to 10% (p<0.001) and case fatality rate from confirmed BSI has fallen from 40% to 14% (p<0.001). Minimum incidence of BSI was estimated at 0.03/1000 years in HIV uninfected vs. 2.16/1000 years in HIV infected adults. Compared to HIV seronegative patients, the estimated incidence rate-ratio for BSI was 80 (95% CI:46–139) in HIV-infected/untreated adults, 568 (95% CI:302–1069) during the first 3 months of ART and 30 (95% CI:16–59) after 3 months of ART.\ud \ud Conclusions\ud \ud Following ART roll-out, the incidence of BSI has fallen and clinical outcomes have improved markedly. Nonetheless, BSI incidence remains high in the first 3 months of ART despite CPT. Further interventions to reduce BSI-associated mortality in the first 3 months of ART require urgent evaluation.

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