Extended-spectrum cephalosporin resistance and PMQR in Salmonella Heidelberg isolated from poultry farms in Argentina

DOMINGUEZ, J.; CHACANA P.; HERRERA M.; GUTKIND G.; MERCADO E.; DI CONZA J.

Boston

Congreso; ASM Microbe 2016; 2016

American Society of Microbiology

Salmonella infections are important zoonoses worldwide. Historically, S. Typhimurium and S. Enteritidis have been the most prevalent serovars in both humans and poultry but in the last years, in Argentina, S. Heildelberg (SH) has been found to be the more common serovar isolated from broilers and thus more studies are needed in order to evaluate implications that this emerging serovar. Resistance to third generation cephalosporins (TGC) and fluoroquinolone has been described in SH isolates but very little is known on the associated mechanisms. The aim of this study was to characterize them mechanisms, especially those encoded in plasmids, in SH isolated from broiler farms, in Argentina, between years 2010 and 2012.