Table 2. Clinical isolates identified by Vitek MS and Vitek 2 ANC card.

Organisms[No. of isolates]	No. [%] of isolates identified by
	Vitek 2 ANC Card						Vitek MS
	Correct identification to		Low discrimination	No identification	Mis-identification		Correct identification to		Low discrimination	No identification	Mis-identification
	Species level	Genus level					Species level	Genus level
Gram-negative bacilli [35]	32	33	0	2	1		32	33	1	2	0
Bacteroides spp. [31]	30	31	0	0	1		30	31	1	0	0
B. Fragilis [26]	26	26	0	0	0		26	26	0	0	0
B. Thetaiotaomicron [3]	3	3	0	0	0		3	3	0	0	0
B. Stercoris [1]	0	1	0	0	1		1	1	0	0	0
B. Vulgatus [1]	1	1	0	0	0		0	1	1	0	0
Parabacteroides spp. [3]	1	1	0	2	0		1	1	0	2	0
P. Distasonis [1]	1	1	0	0	0		1	1	0	0	0
P. goldsteinii [2]	0	0	0	2	0		0	0	0	2	0
Fusobacterium spp. [1]
F. Nucleatum [1]	1	1	0	0	0		1	1	0	0	0
Gram-positive cocci [6]	5	5	0	1	0		5	5	0	0	1
Peptostreptococcus anaerobius [2]	2	2	0	0	0		2	2	0	0	0
Parvimonas micra [2]	2	2	0	0	0		2	2	0	0	0
Finegoldia magna [1]	1	1	0	0	0		1	1	0	0	0
Anaerococcus tetradius [1]	0	0	0	1	0		0	0	0	0	1
Non-spore forming Gram-positive bacilli [2]	2	2	0	0	0		2	2	0	0	0
Collinsella aerofaciens [1]	1	1	0	0	0		1	1	0	0	0
Propionibacterium acnes [1]	1	1	0	0	0		1	1	0	0	0
Spore forming Gram-positive bacilli [7]
Clostridium difficile [7]	4	7	3	0	0		7	7	0	0	0
Cumulative totals [50]	43 [86]	47 [94]	3 [6]	3 [6]	1 [2]		46 [92]	47 [94]	1 [2]	2 [4]	1 [2]

Vitek MS, Vitek mass spectrometry; Vitek 2 ANC card, Vitek 2 anaerobe and Corynebacterium card.