TABLE 3

Carba NP test and Rapid CARB screen kit results for Enterobacteriaceae and Pseudomonas aeruginosa clinical isolates referred to the Belgian national reference center (n = 356)

GroupTestaTest resultNo. of isolates with indicated carbapenemase:Total no. of isolates
OXA-48NDMKPCVIMIMPOXA-198Negative
EnterobacteriaceaeCNPPositive56 (6)b5 (3)4469
Negative36366
RCSUninterpretable621716
Positive51 (11)3 (1)4314 (11)75
Negative24244
    Total Enterobacteriaceae59c5d4e4f63g135
Pseudomonas aeruginosaCNPPositive51 (1)1 (1)52
Negative3166169
RCSUninterpretable8917
Positive43 (1)169 (67)113
Negative38891
    Total P. aeruginosa5113166221
  • a CNP, Carba NP test; RCS, Rapid CARB screen kit.

  • b The number of weak-positive results is in parentheses for all positive results.

  • c Includes 42 K. pneumoniae, 10 E. coli, 3 K. oxytoca, 2 E. cloacae, 1 Enterobacter asburiae, and 1 E. kobei isolates.

  • d Includes 2 E. cloacae, 1 K. pneumoniae, 1 E. coli, and 1 C. freundii isolates.

  • e Includes 3 K. pneumoniae and 1 E. cloacae isolates.

  • f Includes 2 E. cloacae, 1 K. pneumoniae, and 1 C. freundii isolates.

  • g Includes 24 K. pneumoniae, 10 E. coli, 10 E. cloacae, 8 E. aerogenes, 4 K. oxytoca, 2 E. asburiae, 2 E. kobei, 1 C. freundii, 1 S. marcescens, and 1 P. mirabilis isolates.