Abstract
Shigella is a major cause of severe diarrhea in children less than the age of 5 years in sub-Saharan Africa. The aim of this study was to describe the (sub-)serotype distribution and antimicrobial susceptibility of Shigella serogroups from Centrafrican patients with diarrhea between 2002 and 2013. We collected 443 Shigella isolates in total. The most common serogroups were Shigella flexneri (N = 243, 54.9%), followed by Shigella sonnei (N = 90, 20.3%) and Shigella dysenteriae (N = 72, 16.3%). The high diversity of (sub-)serotypes of S. flexneri and S. dysenteriae may impede the development of an efficient vaccine. Rates of resistance were high for ampicillin, chloramphenicol, tetracycline, and cotrimoxazole but low for many other antimicrobials, confirming recommendations for the use of third-generation cephalosporins (only one organism resistant) and fluoroquinolones (no resistance). However, the detection of one extended-spectrum beta-lactamase-producing Shigella organism highlights the need for continued monitoring of antimicrobial drug susceptibility.
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