A rare class A carbapenemase FRI-11 in Enterobacter clinical strain.

Eur J Clin Microbiol Infect Dis

Center of Infectious Diseases, West China Hospital, Sichuan University, Guoxuexiang 37, Chengdu, 610041, China.

Published: April 2023

We found a carbapenem-resistant Enterobacter clinical strain which was susceptible to cefotaxime and ceftazidime. This unusual susceptibility profile promoted the investigation. This strain had bla, a rare carbapenemase-encoding gene, on a 93,864-bp plasmid containing two replicons of IncFII(pECLA) and IncFIA(HI1). FRI-11, FRI-2, FRI-3, FRI-4, FRI-6, FRI-7, and FRI-9 belong to the same group of FRI β-lactamases based on the amino acid sequence similarity and their encoding genes are carried by plasmids containing an IncFII(pECLA) replicon. Awareness should be raised towards FRI carbapenemases that are plasmid-encoded and confer an unusual carbapenem-resistant but 3rd-generation-cephalosporin-susceptible resistance profile.

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http://dx.doi.org/10.1007/s10096-023-04565-1DOI Listing

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