alexa Prevalence and Antimicrobial Susceptibility Patterns of Salmonella serovars and Shigella species
ISSN: 1948-5948

Journal of Microbial & Biochemical Technology
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Research Article

Prevalence and Antimicrobial Susceptibility Patterns of Salmonella serovars and Shigella species

Getachew Mengistu1,2,3*, Gebru Mulugeta2, Tsehaynesh Lema1 and Abraham Aseffa1

1 Armauer Hansen Research Institute, Ethiopia

2 College of Health Sciences, Addis Ababa University, Ethiopia

3 College of Health Sciences, Debre Markos University, Ethiopia

*Corresponding Author:
Getachew Mengistu
Department of Microbiology
Immunology and Parasitology
College of Health Sciences
Debre Markos University, Ethiopia
Tel: +251-910-35-1263
E-mail: [email protected]

Published date: February 14, 2014; Published date: March 03, 2014; Published date: March 07, 2014

Citation: Mengistu G, Mulugeta G, Lema T, Aseffa A (2014) Prevalence and Antimicrobial Susceptibility Patterns of Salmonella serovars and Shigella species. J Microb Biochem Technol S2:006. doi:10.4172/1948-5948.S2-006

Copyright: © 2014 Mengistu G, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits nrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited



Background: Salmonellosis and shigellosis are global human health problems, especially in developing countries such as Ethiopia, where substandard hygiene and unsafe water supplies prevail which is aggravated by multidrug resistance. We determined the prevalence and antimicrobial susceptibility patterns of Salmonella and Shigella isolates among diarrheic patients. Which helps in disease management by showing the disease burden and allowing for selection of appropriate antibiotics for empiric treatment in rural communities of resource limited countries such as Ethiopia. Result: Forty (10.5%) Salmonella and 17 (4.5%) Shigella strains were isolated from 382 patients. The Salmonella strains isolated were 6 (15%) group A (Somatic antigen O, O:2), 5 (12.5%) each of group B (O:4), D1 (O:9) and D2 (O:9,46) and 3 (7.5%) group C (O:7/O8) isolates while 16 (40%) could not be typed with the available antisera. Among 17 Shigella species Shigella sonnei founded as 6 (35.3%) followed by Shigella flexneri 5 (29.5%), Shigella dysenteriae 3 (17.6%) and Shigella boydii 3 (17.6%). High frequency of resistance for both Shigella and Salmonella isolates was observed to tetracycline (82.4%, 52.5%), co-trimoxazole (76.5%, 37.5%) and ampicillin (47.1%, 60%), respectively. All isolates were sensitive to ceftriaxone except 6 intermediate level Salmonella isolates. Fifty three percent of Shigella isolates were Multi-Drug Resistant (MDR) (≥ 3 drugs) as compared to 27.5% of Salmonella isolates. Conclusion: Salmonella and Shigella species cause a significant amount of morbidity in rural communities. It is essential for rural hospitals to establish antimicrobial resistance monitoring policies and enforce them to prevent exacerbation of resistance.


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