Table 1. Bacterial strains, plasmids and primers.

Strain, plasmid or primer	Genotype, relevant characteristics or sequence	Source
Strains E. coli
Ec002	RifampicinR derivative of DH5α: F- endA hsdR17 supE44 thi-1 λ- recA1 gyrA96 relA1 φ80 dLacZΔM15	This study
Ec003	Ec002 carrying pJEG011 and pJEG012	This study
K. pneumoniae Kp001	Clinical outbreak-associated isolate carrying pJEG011 and pJEG012	This study
Kp002	Clinical outbreak-associated isolate phenotypically and genotypically indistinguishable from Kp001: isolated after 18 months of intra-abdominal carriage	This study
Plasmids
pJEG011	IncL/M, Tn1999, ISEcp1-bla CTX-M-14, Tn5393jΔ	This study
pJEG012	pir, Tn1331	This study
Primers
aacA4-F	5′- gaagagtatgagtattcaaacatttcc -3′	This study
aacA4-R	5′- ggaagggttaggcaacac -3′	This study
aacC2-F	5′- gtttagaggagatatcgcgatg-3′	This study
aacC2-R	5′- ttgtcgacggcctctaac-3′	This study
CTX-M-14-F	5′- gagagtgcaacggatgatg -3′	This study
CTX-M-14-R	5′- tgcggctgggtaaaatag -3′	This study
OXA-48-F	5′- gcttccaccctaatttgatg -3′	This study
OXA-48-R	5′- cgagcatcagcattttgtc -3′	This study