Table 4

Genotypic characterization of CTX-M-15-producing E. coli and K. pneumoniae isolates

Species and isolateCityHospitalaPhylogenetic groupCloneGenetic context of blaCTX-M-15b
E. coli
    CM2Buenos AiresH6B2Ec1II
    L4Buenos AiresH3B2Ec2I
    M1Buenos AiresH7AEc3II
    SM4Buenos AiresH8AEc4II
    SM5Buenos AiresH8AEc5I
    T1ChubutH13B2Ec2I
    T3ChubutH13B2Ec6I
K. pneumoniae
    B4Buenos AiresH4NDcKp2I
    CL1Buenos AiresH1NDKp3I
    CL4Buenos AiresH1NDKp1I
    CL6Buenos AiresH1NDKp7II
    CL9Buenos AiresH1NDKp4I
    CM4Buenos AiresH6NDKp1I
    CV1Buenos AiresH7NDKp5II
    I3Santa FeH5NDKp1I
    I4Santa FeH5NDKp1I
    L5Buenos AiresH3NDKp6I
    T8ChubutH13NDKp8I
  • a H1, Hospital de Clínicas, Universidad de Buenos Aires; H3, Hospital Alemán, Ciudad Autónoma de Buenos Aires (CABA); H4, Hospital Británico, CABA; H5, Hospital Iturraspe, Santa Fe; H6, CEMIC, CABA; H7, Sanatorio Mater Dei, CABA; H8, Hospital Eva Perón, Buenos Aires; H13, Hospital de Trelew, Chubut.

  • b I, international blaCTX-M-15 genetic environment (GenBank accession no. NC013121.1; II, truncated ISEcp1-blaCTX-M-15 genetic environment (GenBank accession no. HQ157353) (11).

  • c ND, not determined.