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Characterisation of community acquired non-typhoidal Salmonella from bacteraemia and diarrhoeal infections in children admitted to hospital in Nairobi, Kenya

Kariuki, Samuel; Revathi, Gunturu; Kariuki, Nyambura; Kiiru, John; Mwituria, Joyce and Hart, Charles A. (2006) Characterisation of community acquired non-typhoidal Salmonella from bacteraemia and diarrhoeal infections in children admitted to hospital in Nairobi, Kenya. BMC Microbiology, 6 . Article Number: 101. ISSN 1471-2180

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Abstract

Background: In sub-Saharan Africa community-acquired non-typhoidal Salmonella (NTS) is a major cause of high morbidity and death among children under 5 years of age especially from resource poor settings. The emergence of multidrug resistance is a major challenge in treatment of life threatening invasive NTS infections in these settings. Results: Overall 170 (51.2%) of children presented with bacteraemia alone, 28 (8.4%) with gastroenteritis and bacteraemia and 134 (40.4%) with gastroenteritis alone. NTS serotypes obtained from all the cases included S. Typhimurium (196; 59%), S. Enteritidis (94; 28.3%) and other serotypes in smaller numbers (42; 12.7%); distribution of these serotypes among cases with bacteremia or gastroenteritis was not significantly different. A significantly higher proportion of younger children (< 3 years of age) and those from the slums presented with invasive NTS compared to older children and those from upper socio-economic groups (p < 0.001). One hundred and forty-seven (44.3%) NTS were resistant to 3 or more antibiotics, and out of these 59% were resistant to ampicillin, chloramphenicol and tetracycline. There was no significant difference in antibiotic resistance between the two serotypes, S. Typhimurium and S. Enteritidis. Ceftriaxone and ciprofloxacin were the only antibiotics tested to which all the NTS were fully susceptible. Using Pulsed Field Gel Electrophoresis (PFGE) there were 3 main patterns of S. Typhimurium and 2 main patterns of S. Enteritidis among cases of bacteraemia and gastroenteritis. Conclusion: Serotype distribution, antibiotic susceptibility and PFGE patterns of NTS causing bacteraemia and gastroenteritis did not differ significantly. The high prevalence of NTS strains resistant to most of the commonly used antimicrobials is of major public health concern.

Item Type:Article
Additional Information:Published: 15 December 2006. 10 pages (page numbers not for citation purposes).
Uncontrolled Keywords:NONTYPHOIDAL SALMONELLA; ANTIBIOTIC-RESISTANCE; BACTERIAL-MENINGITIS; CHILDHOOD; TANZANIA; MALAWI
Subjects:Q Science > QR Microbiology
Departments, Research Centres and Related Units:Academic Faculties, Institutes and Research Centres > Faculty of Medicine > School of Infection & Host Defence
DOI:10.1186/1471-2180-6-101
Publisher's Statement:© 2006 Kariuki et al; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Related URLs:
Refereed:Yes
Status:Published
ID Code:751
Deposited On:26 Jun 2008 16:34
Last Modified:24 Apr 2012 10:40

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