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Salmonella enterica subsp. enterica serovar Newport str. SL317

S. Newport is prevalent in many geographic regions. Outbreak investigations and targeted studies have identified dairy cattle as the main reservoir of S. Newport. Antimicrobial resistance (Newport MDR-AmpC) is particularly problematic in this serotype, where the prevalence of Newport MDR-AmpC among S. Newport isolates from humans in the United States increased from 0% during 1996-1997 to 26% in 2001. MDR strains of S. Newport have been recorded as resistant to ampicillin, chloramphenicol, streptomycin, sulphonamides and tetracycline (ACSSuT) and many of these strains show intermediate or full resistance to third-generation cephalosporins, kanamycin, potentiated sulphonamides, and gentamicin. Two distinct evolutionary lineages exist in this serotype; antibiotic susceptible strain SL317 is from one lineage, while MDR strain SL254 is from the other.

Tools

NCBI Blast