Journal
MICROBES AND INFECTION
Volume 2, Issue 1, Pages 25-31Publisher
ELSEVIER
DOI: 10.1016/S1286-4579(00)00289-6
Keywords
plague; Yersinia pestis; epidemiology; lethality; resistance; Madagascar
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From 1996 to 1998, 5 965 patients with suspected plague were identified in 38 districts of Madagascar (40% of the total population are exposed). Using standard bacteriology, 917 of them were confirmed or presumptive (C + P) cases. However, more than 2 000 plague cases could be estimated using F1 antigen assay. Two out of the 711 Yersina pestis isolates tested were resistant to chloramphenicol and to ampicillin (both isolates found in the harbour of Mahajanga). Urban plague (Mahajanga harbour and Antananarivo city) accounted for 37.4% of the C + P cases. Bubonic plague represented 97.2% of the cases, and the lethality rate was still high (20%). In comparing the exposed population, plague was more prevalent in males (M:F sex ratio 1.3:1)and patients under 20 years (2.7% babies under two years). Buboes were mainly localised in the inguinal/femoral regions (55.8%). The epidemiological risk factors are discussed. (C) 2000 Editions scientifiques et medicales Elsevier SAS.
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