Abstract
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.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Adult
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Animals
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Anti-Bacterial Agents / pharmacology
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Bacterial Proteins / genetics
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Bacterial Proteins / isolation & purification
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Bacterial Toxins / isolation & purification
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Bacterial Toxins / metabolism
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Cloning, Molecular
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DNA, Bacterial / genetics
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DNA, Bacterial / isolation & purification
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Exotoxins / isolation & purification
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Exotoxins / metabolism
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Female
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Gene Expression Profiling
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Genotype
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Humans
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Leukocidins / isolation & purification
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Leukocidins / metabolism
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Male
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Methicillin / pharmacology
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Methicillin Resistance
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Middle Aged
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Multilocus Sequence Typing / veterinary
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Penicillin-Binding Proteins
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Senegal / epidemiology
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Staphylococcal Infections / epidemiology*
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Staphylococcal Infections / microbiology
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Staphylococcal Infections / veterinary*
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Staphylococcus aureus / drug effects
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Staphylococcus aureus / genetics
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Staphylococcus aureus / isolation & purification
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Staphylococcus aureus / pathogenicity*
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Swine / microbiology*
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Swine Diseases / epidemiology*
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Swine Diseases / microbiology
Substances
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Anti-Bacterial Agents
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Bacterial Proteins
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Bacterial Toxins
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DNA, Bacterial
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Exotoxins
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Leukocidins
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Panton-Valentine leukocidin
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Penicillin-Binding Proteins
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mecA protein, Staphylococcus aureus
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Methicillin