First Human Isolate of Salmonella enterica Serotype Enteritidis Harboring bla(CTX-M-14) in South America

We studied a clinical isolate of Salmonella enterica serotype Enteritidis showing resistance to oxyiminocephalosporins. PCR analysis confirmed the presence of bla CTX-M-14 linked to IS903 in a 95-kb IncI1 conjugative plasmid. Such a plasmid is maintained on account of the presence of a pndAC addiction system. Multilocus sequence typing (MLST) analysis indicated that the strain belongs to ST11. This is the first report of bla CTX-M-14 in Salmonella Enteritidis of human origin in South America. Copyright © 2012, American Society for Microbiology. All Rights Reserved.
CSIC (Comisión Sectorial de Investigación Científica, Uruguay); European Community (FP7-HEALTH-2007-223431); Ministerio de Ciencia e Innovación/Programa Bio-Fundamental (BFU2009-09200)