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. 2018 Jul 19;6(4):10.1128/microbiolspec.arba-0031-2017. doi: 10.1128/microbiolspec.arba-0031-2017

TABLE 4.

Intrinsic or natural antibiotic susceptibility and resistance of Listeria species

Listeria spp.	Naturally susceptible	Naturally resistant
L. monocytogenes	Trimethoprim	Fosfomycin
L. monocytogenes	Co-trimoxazole	Fusidic acid
L. innocua	Trimethoprim	Fosfomycin
	Co-trimoxazole	Fusidic acid
		Enoxacin
		Sparfloxacin
L. welshimeri	Trimethoprim	Fusidic acid
L. welshimeri	Co-trimoxazole	Fusidic acid
L. ivanovii	Fosfomycin	Enoxacin
	Fusidic acid^a	Fusidic acid^a
	Trimethoprim	Fleroxacin
	Co-trimoxazole	Pefloxacin
		Sparfloxacin
L. seeligeri	Trimethoprim	Enoxacin
	Co-trimoxazole	Fleroxacin
		Pefloxacin
		Sparfloxacin
		Fusidic acid
L. grayi	All Fluoroquinolones	Fusidic acid
		Trimethoprim
		Co-trimoxazole

^{^a}

Both fusidic acid-susceptible and -resistant L. ivanovii isolates occur naturally in the environment.