A randomized placebo-controlled trial of the efficacy and safety of a terbinafine, florfenicol and betamethasone topical ear formulation in dogs for the treatment of bacterial and/or fungal otitis externa

Table 3 MIC₅₀ and MIC₉₀^a

Bacteria genus/species	# isolates tested	MIC₅₀ (μg/mL FFC)	MIC₉₀ (μg/mL FFC)
Escherichia coli	25	16	16
Proteus mirabilis	17	8	8
Pseudomonas aeruginosa	52	> 64	> 64
Staphylococcus pseudintermedius	170	4	4
Streptococcus spp	52	2	2
Yeast genus/species	# isolates tested	MIC₅₀ (μg/mL TRB)	MIC₉₀ (μg/mL TRB)
Malassezia pachydermatis	239^b	0.015	0.06

^aThese data represent all 392 isolates (284 from Day 0 and 108 from treatment failure cases)
^bTwenty-one M. pachydermatis samples tested did not grow in the MIC plates

ISSN: 1746-6148