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Salmonella serovar distribution from non-human sources in Italy; results from the IT-Enter-Vet network
  1. Marzia Mancin1,
  2. Lisa Barco1,
  3. Carmen Losasso1,
  4. Simone Belluco1,
  5. Veronica Cibin1,
  6. Matteo Mazzucato2,
  7. Stefano Bilei3,
  8. Maria Rosaria Carullo4,
  9. Lucia Decastelli5,
  10. Elisabetta Di Giannatale6,
  11. Mario D’Incau7,
  12. Elisa Goffredo8,
  13. Stefano Lollai9,
  14. Chiara Piraino10,
  15. Stefania Scuota11,
  16. Monica Staffolani11,
  17. Silvia Tagliabue7 and
  18. Antonia Ricci1
  1. 1OIE and National Reference Laboratory for Salmonella, Istituto Zooprofilattico Sperimentale delle Venezie, Padova, Italy
  2. 2GIS Unit, Istituto Zooprofilattico Sperimentale delle Venezie, Padova, Italy
  3. 3Istituto Zooprofilattico Sperimentale del Lazio e della Toscana, Roma, Italy
  4. 4Istituto Zooprofilattico Sperimentale del Mezzogiorno, Portici, Italy
  5. 5Istituto Zooprofilattico Sperimentale del Piemonte e Valle D’Aosta, Torino, Italy
  6. 6Istituto Zooprofilattico Sperimentale dell’Abruzzo e del Molise, Teramo, Italy
  7. 7Istituto Zooprofilattico Sperimentale della Lombardia ed Emilia Romagna, Brescia, Italy
  8. 8Istituto Zooprofilattico Sperimentale della Puglia e Basilicata, Foggia, Italy
  9. 9Istituto Zooprofilattico Speimentale delle Sardegna, Sassari, Italy
  10. 10Istituto Zooprofilattico Sperimentale della Sicilia, Palermo, Italy
  11. 11Istituto Zooprofilattico Sperimentale dell’Umbria e delle Marche, Perugia, Italy
  1. E-mail for correspondence; lbarco{at}izsvenezie.it

Abstract

The study summarises the results obtained over the period 2002–2013 by the Italian IT-Enter-Vet network, aimed at collecting data on Salmonella isolates from non-human sources. A total of 42,491 Salmonella isolates were reported with a progressive decrease over the years. S. Typhimurium was the most frequent serovar up to 2011, but then, it was overtaken by S. 4,[5],12,:i:-, S. Derby, S. Livingstone and S. Enteritidis alternated as the third most commonly isolated serovars. With regard to the sources of isolation, S. Typhimurium was distributed ubiquitously among the animal species. On the contrary, S. 4,[5],12,:i:- and S. Derby were strictly associated with pigs, whereas S. Livingstone, S. Enteritidis and S. Infantis were clearly related to poultry. Intriguingly, when the frequency of serovar distribution along the food chain was considered, it was evident that S. Typhimurium and S. Derby tended to persist along the chain, as they were isolated even more frequently from foods than from animals. A similar distribution was found for S. Enteritidis and S. Hadar. Despite limitations related to non-mandatory participation of laboratories in the network, the data presented are valuable to obtain a picture of the evolution of Salmonella from non-human sources over time in Italy.

  • surveillance
  • veterinary sources
  • salmonella serovars
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Footnotes

  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Competing interests None declared.

  • Provenance and peer review Not commissioned; externally peer reviewed.

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