Extended spectrum beta-lactamase SHV-12-producing Salmonella from poultry |
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Authors: | Chiaretto Giuseppina Zavagnin Paola Bettini Francesca Mancin Marzia Minorello Claudio Saccardin Cristina Ricci Antonia |
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Institution: | National Reference Laboratory for Salmonella, Istituto Zooprofilattico delle Venezie, Viale dell'Università 10, 35020 Legnaro (Padova), Italy. gchiaretto@izsvenezie.it |
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Abstract: | Salmonella strains isolated from poultry and poultry products over the period 2005-2006 have been investigated in order to ascertain the presence of extended spectrum cephalosporins (ESC) resistance. Twelve (ESC)-resistant isolates (n=1 S. Enteritidis, n=1 S. Braenderup and n=10 S. Livingstone) were characterized as SHV-12-positive. The multi-drug resistant S. Livingstone SHV-12-producing isolates, untypeable by pulsed-field gel electrophoresis (PFGE), showed a clonal relationship by random amplified polymorphic DNA (RAPD) analysis. The SHV-12 beta-lactamase is reported for the first time in Salmonella enterica strains isolated from poultry in Italy. The results suggest poultry as a source of Salmonella carrying extended spectrum beta-lactamases (ESBLs) genes and highlights the need of monitoring animal productions to prevent spreading of (ESC)-resistant strains. |
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