Table 2.
Strain | Species | InC type(s)a | MLSTb | KPC | Tn4401 variantc | Size(s) of Tn4401 deletion pattern(s) (bp)d |
---|---|---|---|---|---|---|
1 | K. pneumoniae | N, FIIs | 63 | KPC-4 | b | 160, 278, 430 |
2 | K. pneumoniae | Unk | 76 | KPC-3 | a | 155, 217 |
3 | K. pneumoniae | FIIs | 234 | KPC-2 | a | 289 |
4 | K. pneumoniae | FIIs | 258 | KPC-2 | a | 278, 430 |
5 | K. pneumoniae | FIIs | 258 | KPC-3 | b | 186, 278, 430 |
6 | K. pneumoniae | N, A/C | 258 | KPC-2 | a | 215, 278, 430 |
7 | K. pneumoniae | Unk | 258 | KPC-2 | a | 191, 278, 430 |
8 | K. pneumoniae | FIIs | 258 | KPC-3 | b | 278, 430 |
9 | K. pneumoniae | FIIs | 258 | KPC-3 | −68 | 255 |
10 | K. pneumoniae | A/C | 486 | KPC-2 | b | 278, 430 |
11 | E. coli | L1, N, Y, FIA, FIB, FIIs | 2 | KPC-2 | b | 278, 430 |
12 | E. coli | L1, N, Y, FIA, FIB, FIIs | 2 | KPC-3 | b | 278, 430 |
13 | E. coli | L1, FIA, FIB, FIIs | 43 | KPC-2 | a | 278, 430 |
14 | E. coli | FIB, A/C, Frep | 33 | KPC-2 | a | 278, 430 |
15 | E. coli | A/C | 35 | KPC-3 | b | 278 |
Plasmid replicon typing was performed using a method previously described by Carattoli et al. (2). Unk, unknown.
MLST for K. pneumoniae was performed using the method described by Diancourt et al. (9); MLST for E. coli was performed using the Institut Pasteur MLST scheme (http://www.pasteur.fr/recherche/genopole/PF8/mlst/EColi.html).
Tn4401 variants were identified by PCR (6), followed by DNA sequencing. “−68” indicates the previously described variant with a 68-bp deletion upstream of blaKPC (13).
Tn4401 deletion patterns were identified by nested PCR and are expressed as the PCR product length resulting from amplification with primer set F2/R2.