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Phenotypic and molecular characterisation of multidrug-resistant Salmonella enterica serovar Hadar in Greece, from 2007 to 2010

All 120 strains of Salmonella enterica serovar Hadar isolated during 2007–2010 in Greece were characterized by phenotypic and molecular methods. High rates of resistance to nalidixic acid (92%) and low levels of ciprofloxacin resistance (88%) were observed. Pulsenet-pulsed field gel electrophoresis profile SHADXB.0001 was predominant in Greece (58%) as in Europe but PT1, a rare phage type in Europe, was frequent in Greece (56%). The SHADXB.0001 and PT1 clone (38%) were found in humans, animals and food of animal origin with R-type ApSpTNxpCp being predominant (25%). The data indicate that this clone (possibly endemic) was circulating through the food chain in Greece during the study period.

Keywords:

Antimicrobial susceptibility, clone, phage typing, pulsed field gel electrophoresis, Salmonella Hadar

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