Interspecies transfer of vancomycin, erythromycin and tetracycline resistance among Enterococcus species recovered from agrarian sources

Table 4 Antibiotic resistance profiles of enterococcus isolates and transconjugants

Enterococcal isolates and transconjugants	MIC (μg/ml) at 24 h
	VA	E	SM	TET	TMP	TE	KAN
E.faecalis MF06035	R	R	R	R	R	R	64
E.faecalis MF06036	R	R	R	R	R	R	64
E.faecalis MW01038	4	<0.25	256	<0.5	R	0.5	256
E.faecalis MW02102	4	<0.25	256	<0.5	R	1	64
E.faecalis MW03020	4	<0.25	256	R	0.25	<0.25	64
E.faecalis MW03025	R	<0.25	256	1	1	<0.25	64
E.faecalis MW03051	4	<0.25	256	1	0.5	1	64
E.faecalis ST02011	4	32^R	128	<0.5	0.25	<0.25	1024
E.faecium MF06019	1	R	64	<0.5	0.06	<0.25	>1024^HLR
E.faecalis MF04010	1	<0.25	R	R	0.13	<0.25	256
E.faecalis MF06030	0.5	<0.25	64	R	0.13	<0.25	>1024^HLR
E.faecium MF03061	1	1	32	R	0.06	<0.25	1024
E.faecalis MW01105^Rif	1	0.5	R	<0.5	0.13	2	128
E.faecalis MW02043^Rif	0.5	<0.25	32	<0.5	0.06	<0.25	>1024^HLR
E.faecium ST01109^Rif	2	R	128	<0.5	0.5	<0.25	256
T1	R	R	R	2	R	R	64
T2	1	<0.25	R	R	0.13	2	64
T3	1	<0.25	R	R	0.5	<0.25	128
T4	R	R	R	R	R	R	128
ECOFF	VA	E	SM	TET	TMP	TE	KAN
E.faecalis	4	4	512	4	1	2	ND
E.faecium	4	4	128	4	ND	2	ND

VA vancomycin, E erythromycin, SM streptomycin, TET tetracycline, TMP trimethoprim, TE teicoplanin, KAN kanamycin. ECOFF Environmental cut-off [17]
^HLR, High level resistant*; ^R, Resistant
^Rif, Rifampicin resistant mutant; ND Not determined
Kanamycin resistance is ≥ 2000 μg/ml [35]

ISSN: 1471-2180