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Epidemiology & Social

Pattern of bacterial diseases in a cohort of HIV-1 infected adults receiving cotrimoxazole prophylaxis in Abidjan, Côte d'Ivoire

Anglaret, Xaviera,b; Messou, Eugèneb; Ouassa, Timothéeb,c; Toure, Siakab; Dakoury-Dogbo, Nicoleb; Combe, Patriceb,c; Mahassadi, Allassaneb,d; Seyler, Catherineb; N'Dri-Yoman, Thérèseb,d; Salamon, Rogera,b; for the ANRS 1203 Study Group

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Background: WHO/UNAIDS recommended that cotrimoxazole should be prescribed in Africa in HIV-infected adults with CD4 cell counts < 500 × 106/l, while closely monitoring bacterial diseases in as many settings as possible.

Methods: Prospective cohort study, describing bacterial morbidity in adults receiving cotrimoxazole prophylaxis (960 mg daily) between April 1996 and June 2000 in Abidjan, Côte d'Ivoire.

Results: Four-hundred and forty-eight adults (median baseline CD4 cell count 251 × 106/l) were followed for a median time of 26 months. The rates of overall bacterial diseases and of serious bacterial diseases with hospital admission were 36.8/100 person-years (PY) and 11.3/100 PY, respectively. Bacterial diseases were the first causes of hospital admissions, followed by non-specific enteritis (10.2/100 PY), acute unexplained fever (8.4/100 PY), and tuberculosis (3.6/100 PY). Among serious bacterial diseases, the most frequent were enteritis (3.0/100 PY), invasive urogenital infections (2.5/100 PY), pneumonia (2.3/100 PY), bacteraemia with no focus (2.0/100 PY), upper respiratory tract infections (1.6/100 PY) and cutaneous infections (0.6/100 PY). Compared with patients with baseline CD4+ cell counts ≥ 200 × 106/l, other patients had an adjusted hazard ratio of serious bacterial diseases of 3.05 (95% confidence interval, 2.00–4.67; P < 0.001). Seventy-five bacterial strains were isolated during serious episodes including 29 non-typhi Salmonella, 14 Escherichia coli, 12 Shigella spp, and 12 Streptococcus pneumoniae.

Discussion: Though with a medium-term rate half that of the short-term rate estimated under placebo before 1998 (26.1/100 PY), serious bacterial morbidity remains the first cause of hospital admission in adults receiving cotrimoxazole in this setting.

© 2003 Lippincott Williams & Wilkins, Inc.


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