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Wall, Emma C.; Cartwright, Katharine; Scarborough, Matthew; Ajdukiewicz, Katherine M.; Goodson, Patrick; Mwambene, James; Zijlstra, Eduard E.; Gordon, Stephen B.; French, Neil; Faragher, Brian; Heyderman, Robert S.; Lalloo, David G. (2013)
Publisher: Public Library of Science
Journal: PLoS ONE
Languages: English
Types: Article
Subjects: Research Article, wl_200, Infectious Diseases, Meningitis, wa_30, Medicine, Viral Diseases, Bacterial Diseases, Q, Pneumococcus, R, Infectious Diseases of the Nervous System, HIV, Science, Bacterial Meningitis, ws_460, HIV clinical manifestations, Neurology
Mortality from bacterial meningitis in African adults is significantly higher than those in better resourced settings and adjunctive therapeutic interventions such as dexamethasone and glycerol have been shown to be ineffective. We conducted a study analysing data from clinical trials of bacterial meningitis in Blantyre, Malawi to investigate the clinical parameters associated with this high mortality.\ud \ud Methods\ud \ud We searched for all clinical trials undertaken in Blantyre investigating bacterial meningitis from 1990 to the current time and combined the data from all included trial datasets into one database. We used logistic regression to relate individual clinical parameters to mortality. Adults with community acquired bacterial meningitis were included if the CSF culture isolate was consistent with meningitis or if the CSF white cell count was >100 cells/mm3 (>50% neutrophils) in HIV negative participants and >5 cells/mm3 in HIV positive participants. Outcome was measured by mortality at discharge from hospital (after 10 days of antibiotic therapy) and community follow up (day 40).\ud \ud Results\ud \ud Seven hundred and fifteen episodes of bacterial meningitis were evaluated. The mortality rate was 45% at day 10 and 54% at day 40. The most common pathogens were S.pneumoniae (84% of positive CSF isolates) and N.meningitidis (4%). 607/694 (87%) participants tested were HIV antibody positive. Treatment delays within the hospital system were marked. The median presenting GCS was 12/15, 17% had GCS<8 and 44.9% had a seizure during the illness. Coma, seizures, tachycardia and anaemia were all significantly associated with mortality on multivariate analysis. HIV status and pneumococcal culture positivity in the CSF were not associated with mortality. Adults with community acquired bacterial meningitis in Malawi present with a severe clinical phenotype. Predictors of high mortality are different to those seen in Western settings. Optimising in-hospital care and minimising treatment delays presents an opportunity to improve outcomes considerably.

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