Epidemiology of Staphylococcus aureus in pigs and farmers in the largest farm in Dakar, Senegal.

Cheikh Fall (1) , Abdoulaye Seck (1) , Vincent Richard (1) , Moustapha Ndour (2) , Mbacke Sembene (3) , Frederic Laurent (4) , Sebastien Breurec (1)

1 Bactériologie médicale et Environnementale
2 Department of Breeding
3 Faculté des Sciences et Techniques (FST)
4 Centre National de Reference des Staphylocoques

Between December 2009 and November 2011, we collected 57 (12.3%) Staphylococcus aureus isolates from 464 pigs and 16 (30.8%) isolates from 52 farmers in the largest farm in Dakar. Fifty-one isolates (70%) belonged to four major multilocus sequence typing clonal complexes (CCs): CC152 (26.0%), CC15 (19.2%), CC5 (13.7%), and CC97 (10.9%). The CC variability among the pigs was similar to that observed among the farmers. Six isolates that were recovered only among pigs were resistant to methicillin (10.5%). They were assigned to the ST5-staphylococcal cassette chromosome mec type (SCCmec) IV (n = 5) and ST88-SCCmec IV (n = 1) clones. The luk-PV genes encoding Panton-Valentine leukocidin (PVL), present in 43 (58.9%) isolates overall, including all major CCs and the MRSA ST5-SCCmec IV clone, were highly prevalent compared to data from industrialized countries. This finding is of major concern with regard to the potential virulence of these strains.

Domains: Bacteriology

Cheikh Fall, Abdoulaye Seck, Vincent Richard, Moustapha Ndour, Mbacke Sembene, et al.. Epidemiology of Staphylococcus aureus in pigs and farmers in the largest farm in Dakar, Senegal.. Foodborne Pathogens and Disease, 2012, 9 (10), pp.962-5. ⟨10.1089/fpd.2012.1197⟩. ⟨pasteur-00782614⟩