Genotyping of Staphylococcus aureus isolated from various sites on farms with dairy sheep using pulsed-field gel electrophoresis.

E. Vautor 1, * G. Abadie 1 J.-M. Guibert 1 C. Huard 1 M. Pépin 1
* Auteur correspondant
1 ERRC - Elevage des ruminants en régions chaudes
Abstract : We investigated the genetic diversity of 179 Staphylococcus aureus isolates recovered from various sites in 10 farms producing cheeses manufactured with raw ewe's milk. Isolates were collected from handcrafted cheeses, bulk tank milk, milk from half-udders, skin abscesses on the udder if present, hands and anterior nares of farmers, and air of the milking area. The isolates were typed using pulsed-field gel electrophoresis (PFGE) of DNA SmaI digests and compared to other isolates of S. aureus isolated in different hosts or in different locations. The results showed that nine farms were contaminated by S. aureus isolates with identical banding patterns (named OV) or by genetically related isolates (named OV'). These dominant banding patterns were found in a variable proportion of the samples from each farm (range: 11-100%). Most of the strains isolated from nasal carriage or strains isolated from other regions or from other animal species had different PFGE patterns to OV or OV', except for three strains. These results show that a single clone of S. aureus is widely distributed both in infected mammary glands and in cheese produced from raw milk. This study confirms that infected mammary glands are the main source of the contamination of dairy products in sheep.
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Article dans une revue
Veterinary Microbiology, Elsevier, 2003, 96 (1), pp.69-79
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https://hal-anses.archives-ouvertes.fr/hal-00409350
Contributeur : Eric Vautor <>
Soumis le : jeudi 12 novembre 2009 - 13:44:44
Dernière modification le : jeudi 22 octobre 2015 - 01:06:08

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  • HAL Id : hal-00409350, version 1
  • PUBMED : 14516709

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E. Vautor, G. Abadie, J.-M. Guibert, C. Huard, M. Pépin. Genotyping of Staphylococcus aureus isolated from various sites on farms with dairy sheep using pulsed-field gel electrophoresis.. Veterinary Microbiology, Elsevier, 2003, 96 (1), pp.69-79. 〈hal-00409350〉

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