Abstract

Plasmid-mediated resistance to fosfomycin has been seldom described in Proteus mirabilis. We report two strains harboring fosA3 gene. Whole-genome sequencing revealed a plasmid that encoded fosA3 gene flanked by two insertion sequence (IS)26 mobile elements. Both strains also produced the blaCTX-M-65 gene that was located in the same plasmid. The sequence detected was IS1182-blaCTX-M-65-orf1-orf2-IS26-IS26-fosA3-orf1-orf2-orf3-IS26. The importance of this transposon lies in its ability to spread in Enterobacterales, therefore, epidemiological surveillance should be carried out.

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