Prevalence of Listeria spp. and characterization of Listeria monocytogenes isolated from food products in Tetouan, Morocco
Intitulé de l'article | Prevalence of Listeria spp. and characterization of Listeria monocytogenes isolated from food products in Tetouan, Morocco |
Revue |
Volume 84,, Pages 436-441 |
Date de publication | February 2018 |
Auteurs |
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Abstract | A total of 1096 food samples were purchased in Tetouan, North-Western of Morocco, to examine the presence of Listeria spp. Eighty (7.3%) of the tested samples were found positive for the presence ofListeriaspp., whileL. monocytogeneswas detected in 16 (1.5%) samples.L. monocytogenes isolates belonged to clonal complexes CC2 (PCR serogroup IVb) and CC199 (PCR serogroup IIa) and to 8 different combinedAscI/ApaIpulsed-field gel electrophoresisprofiles. Core genomemultilocus sequence typing(cgMLST) allowed to distinguish 12 different cgMLST types and revealed the presence of 3 clusters of closely-related isolates from different samples, suggesting the existence of common sources of contamination. Isolates showed no resistance to the referenceantibioticsused for the treatment of listeriosis. This study underlines the circulation ofL. monocytogenesstrains of clonal complex CC2 in Morocco and highlights the importance of microbiological surveillance in order to minimize consumers’ exposure to this foodborne pathogen. |
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