Original Research

Epidemiological studies based on multi-locus sequence typing genotype of methicillin susceptible Staphylococcus aureus isolated from camel’s milk

Alsagher O. Ali, Hassan Y.A.H. Mahmoud
Onderstepoort Journal of Veterinary Research | Vol 84, No 1 | a1425 | DOI: https://doi.org/10.4102/ojvr.v84i1.1425 | © 2017 Alsagher O. Ali, Hassan Y.A.H. Mahmoud | This work is licensed under CC Attribution-NoDerivatives 4.0
Submitted: 27 January 2017 | Published: 22 September 2017

About the author(s)

Alsagher O. Ali, Division of infectious Diseases, Animal Medicine Department, South Valley University, Egypt
Hassan Y.A.H. Mahmoud, Division of infectious Diseases, Animal Medicine Department, South Valley University, Egypt


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Abstract

One hundred milk samples were collected from camel’s milk for the isolation of Staphylococcus aureus. Thirty-one isolates were S. aureus, 45 were other forms of staphylococci and 24 represented other bacteria. Five isolates from S. aureus were methicillin resistant S. aureus (MRSA) and 26 samples were methicillin susceptible S. aureus (MSSA). The whole genome sequence of S. aureus was annotated and visualised by rapid annotation using subsystem technology (RAST) which is a fully-automated service for annotating complete or nearly complete bacterial genomes. Four isolates from MSSA strains were subjected to multi-locus sequence typing (MLST). Three multilocus sequences types or sequence types (MLST/ST) were found, namely ST15, ST1153 and ST130. The phylogenetic analysis of the concatenated sequences of the seven genes forming the MLST profile of S. aureus classification revealed a high degree of similarity and close relationship between the ST15 and ST1153 while the third ST (ST130) was located in a different cluster.

Keywords

MLST; MSSA; Staphylococcus aureus genotyping

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