Abstract
A total of 270 samples, nine lots of 30 samples each, of imported Moroccan food snails was examined for the presence of Salmonella. Eighty-four samples (an overall incidence of 31.11%) and all nine lots contained Salmonella. No significant difference (P > 0.25) in the number of positive samples was observed by using either selenite cystine broth or tetrathionate broth when the samples had been pre-enriched in lactose broth. When used as direct selective enrichments with samples not pre-enriched in lactose broth, tetrathionate broth was significantly (P < 0.05) more productive than selenite cystine broth. The overall detection of Salmonella-positive samples by direct enrichment was significantly greater (P < 0.001) than by pre-enrichment. A variety of uncommon serotypes representative of several somatic groups was isolated. This study reports the occurrence and incidence, and the concomitant human health potential, of Salmonella in one species of live, imported food snails.
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