Analysis of the sanitary survey 2015-2017 conducted in the gulf of La Spezia (Italy): Reclassification of the areas of production of live bivalve molluscs

  • Alice Giusti FishLab, Department of Veterinary Sciences, University of Pisa, Italy.
  • Erica Costa | Liguria Local Health Unit - ASL 5, Complex Unit of Hygiene of Foods and Animal Origin, La Spezia, Italy.
  • Alice Traina FishLab, Department of Veterinary Sciences, University of Pisa, Italy.
  • Daniele Nucera Department of Agriculture, Forest and Food Science, University of Turin, Italy.
  • Patrizia Serratore Department of Veterinary Medical Sciences, University of Bologna, Italy.
  • Mino Orlandi Liguria Local Health Unit - ASL 5, Complex Unit of Hygiene of Foods and Animal Origin, La Spezia, Italy.
  • Andrea Armani FishLab, Department of Veterinary Sciences, University of Pisa, Italy.


The sanitary survey is aimed at classifying and monitoring the production areas of live bivalve molluscs (LBM) and it is performed using standards that are provided by the Centre for Environment, Fisheries and Aquaculture Science’s Guide to Good Practice. In this study, data from the sanitary survey carried out by the Asl5 Spezzino on the production areas of the gulf of La Spezia during the period 2015-2017 were analysed. The number and type of the analysis performed both on the total sampling and on the individual target species, as well as the number and type of found non-compliance (assessed on both mandatory parameters and on parameters fixed by the local monitoring plan) were considered. Data were also compared with those from the sanitary survey 2012-2014. Appropriate statistic tests were used to evaluate data from E. coli and Norovirus monitoring. Overall, 4306 analysis were performed, especially on the species M. galloprovincialis (89%) and they were mostly focused on to the search of biological agents. 160 NC were detected. Most of the NC concerns the Norovirus’s positivity (93.75%) in M. galloprovincialis and C. gigas. A correlation between the levels of E. coli and rainfall/ seasonality (higher levels in the colder months) was proved, especially in the sampling points located in the inner part of the dam and in the Portovenere Bay. Class B was reconfirmed for M. galloprovincialis, the production areas of C. gigas were reclassified as A and those of V. verrucosa were definitively closed. The sanitary survey was therefore confirmed as a useful tool for reclassification and for monitoring LBM production areas.



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Original Articles
Bivalves, sanitary survey, official control, health risk
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How to Cite
Giusti A, Costa E, Traina A, Nucera D, Serratore P, Orlandi M, Armani A. Analysis of the sanitary survey 2015-2017 conducted in the gulf of La Spezia (Italy): Reclassification of the areas of production of live bivalve molluscs. Ital J Food Safety [Internet]. 2020Apr.1 [cited 2021May16];9(1). Available from:

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