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Original article

Presumptive shigellosis: Clinical and laboratory characteristics of Bangladeshi patients

, , , , &
Pages 96-100 | Received 12 Aug 2004, Accepted 25 Oct 2004, Published online: 08 Jul 2009
 

Abstract

The aim of the study was to examine some selected clinical and laboratory parameters in distinguishing non-Shigella invasive diarrhoeas from culture-confirmed Shigella cases. We conducted a clinic-based, cross-sectional study at the Dhaka Hospital of ICDDR,B located in Bangladesh. In total, 389 patients of all age groups and of both genders, with a history of diarrhoea of less than 96 h and presence of visible blood and/or mucus in the stool were presumed to have shigellosis and enrolled in the study. Shigella was isolated from faecal cultures in 227 (58.4%) patients. The remaining 162 (41.6%) patients did not have Shigella isolated from their faecal cultures and constituted the comparison group. Another 238 randomly selected patients with non-Shigella diarrhoea from the Diarrhoeal Disease Surveillance System database of the Dhaka Hospital constituted another comparison group. Cases of culture-proven Shigella were similar to non-Shigella invasive diarrhoeal patients with presumptive shigellosis with regard to several biosocial variables. The nutritional status of children with shigellosis was significantly inferior to those with non-Shigella diarrhoea. The presence of macrophages more than 5/HPF in stool microscopic examination was significantly more frequent among patients infected with Shigella. Empirical antimicrobial therapy for shigellosis might be considered for malnourished diarrhoeal children presenting with history of visible blood and/or mucus in stool, and children older than 1 y of age. Further studies are needed in different geographical settings to identify clinical and laboratory parameters that could help identify patients with shigellosis.

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