Epidemiology and Infection

Characterization of virulence factors in the newly described Salmonella enterica serotype Keurmassar emerging in Senegal (sub-Saharan Africa)

A. GASSAMA-SOW a1c1, A. A. WANE a1, N. A. CANU a2, S. UZZAU a2, A. AIDARA- KANE a1 and S. RUBINO a2
a1 Laboratoire de Bactériologie Expérimentale, Institut Pasteur, Dakar, Sénégal
a2 Department of Biomedical Sciences, Center for Biotechnology, Development and Biodiversity Research, University of Sassari, Viale San Pietro, Sassari, Italy

Article author query
gassama-sow a   [PubMed][Google Scholar] 
wane aa   [PubMed][Google Scholar] 
canu na   [PubMed][Google Scholar] 
uzzau s   [PubMed][Google Scholar] 
kane aa   [PubMed][Google Scholar] 
rubino s   [PubMed][Google Scholar] 


From 2000 to 2001, nine strains of Salmonella enterica belonging to the new serotype Keurmassar have been isolated from human and poultry samples at the Senegalese National Salmonella and Shigella Reference Laboratory at the Pasteur Institute, in Dakar. All strains carried virulence factors including Salmonella Pathogenicity Islands (SPI)-1, -2, -3 and -5 encoded genes. Strains did not harbour virulence plasmid. Ribotyping analysis revealed a single clone identical to Salmonella Decatur isolated in Zimbabwe. These data suggest that strains are closely related, and may have been spread clonally. In this new serotype, insertion sequence IS200 is not present.

(Accepted November 10 2005)
(Published Online January 18 2006)

c1 Laboratoire de Bactériologie Expérimentale, Institut Pasteur, 220 Dakar, Sénégal. (Email: gassama@pasteur.sn)