TABLE 1.

Origins and epidemiological features of the clinical strains investigated^a

Strain	Collection date (yr)	Source	Origin	DHA-1 plasmid transfer	TEM type	SHV type	PFGE type	DHA-1 plasmid fingerprint	orf513-specific PCR result
Salmonella serovar Enteritidis KF92	1992	Stool	Dhahran Saudi Arabia	Tc E. coli HB101(pSAL-1)	−	−	ND	ND	+
K. pneumoniae Kp760	1998	Blood	Rothschild Hospital, Paris	Tc E. coli C600(pKp760)	−	−	I	ND	+
K. pneumoniae TN58647	1999	Urine	Tenon Hospital, Paris	Tc E. coli J53(pTN58647)	TEM-1	SHV-2a	A	1a	−
K. pneumoniae RDDHA	1999	Urine	R. Debré Hospital, Paris	Tc E. coli C600(pRDDHA)	−	SHV-2	G	ND	+
K. pneumoniae RBDHA	2002	Urine	R. Ballanger Hospital, Parisian region	Tc E. coli J53(pRBDHA)	−	−	H	2	+
K. pneumoniae JDDHA	2002	Urine	Joffre-Dupuytren Hospital, Parisian region	Tc E. coli J53(pJDDHA)	TEM-1	SHV-2a	A	1a	−
K. oxytoca MPDHA	2002	Urine	Massy-Palaiseau Hospital, Parisian region	No	TEM-1	−	ND	NT	+
K. pneumoniae TN60013	2002	Urine	Tenon Hospital, Paris	Tc E. coli C600(pTN60013)	TEM-1	SHV-2a	A	1c	−
K. pneumoniae STA1DHA	2003	Mesentery	St. Antoine Hospital, Paris	Ep E. coli DH10B(pSTA1DHA)	−	−	B	1b	−
K. pneumoniae TN26033	2003	Catheter	Tenon Hospital, Paris	No	−	−	D	NT	−
K. pneumoniae STA2DHA	2003	Urine	St. Antoine Hospital, Paris	Ep E. coli DH10B(pSTA2DHA)	−	−	C	1a	−
K. pneumoniae IGR1DHA	2003	Urine	Institut Gustave Roussy, Parisian region	Tc E. coli J53(pIGR1DHA)	−	−	E	1a	−
K. pneumoniae IGR2DHA	2003	Stool	Institut Gustave Roussy, Parisian region	Tc E. coli J53(pIGR2DHA)	−	−	F	1a	−

^aAbbreviations: Tc, transconjugant; Ep, transformant; −, negative; NT, no transfer; ND, not determined.