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Background: Salmonella enterica subsp. enterica serovar Bredeney (antigenic formula 1,4,12,27:l,v:1,7 [z40]) is a serovar of the O:4 (B) serogroup. Serovar Bredeney is a rare serovar, in the US, 405 cases were reported in humans between 1999-2009; in addition, 11 isolates were obtained from turkeys in the US during the same period. In Ireland, a different trend was observed, as it was reported as the third most common serovar during the years 1998-2000.

NCBI PD link for serovar Bredeney: https://www.ncbi.nlm.nih.gov/pathogens/isolates/#(taxgroup_name:%22Salmonella%20enterica%22)%20AND%20computed_types:(%22serotype=Bredeney%22)

Genetic characteristics: In the Netherlands one isolate of serovar Bredeney was reported to harbor an IncN plasmid carrying the qnr genes (quinolone resistance genes). Among 112 isolates collected in Ireland, a high proportion (74%) of isolates were susceptible to all antimicrobial agents tested, while 21% showed resistance to both sulfonamide and trimethoprim, and a single isolate (0.9%) exhibited resistance to multiple (five) antimicrobial agents.

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