Bacterial contamination of shellfish in Slovenia
2005
Biasizzo, M., Ljubljana Univ. (Slovenia). Veterinary Fac. | Kirbis, A. | Marinsek, J.
In 2003 and 2004 we examined 182 shellfish samples according to the present applicable rules. The samples were tested for the presence of Salmonella and enumeration of Escherichia coli with the methods recommended by European Community. More then 90 % of samples fulfilled the veterinary conditions about placing live shellfish on the market, concerning the level of 230 E. coli in 100 g of flesh. We detected the presence of Salmonella at 0.5 % of samples. That represents a rare but possible occasional appearance of this bacteria in shellfish. Concerning other contaminants that may cause poisoning by shellfish consumption, like pathogenic strains of Vibrio parahaemolyticus, Norovirus or hepatitis A virus, a lot of studies have been done, in a view to prepare new microbiological criteria for foodstuffs in Europe. It is now well recognised that bacterial indicators of faecal pollution (E. coli and faecal coliforms) do not adequately indicate the presence of enteric viruses. Another problem is that depuration process is more effective in removing E. coli and coliforms than viruses from shellfish.
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