TABLE 5.

Recovery of C. difficile from 113 Vidas-negative stool samples using six selective media^a

Incubation length and parameter	Result
	IDCd	BBL medium	Oxoid medium	CLO medium	CCEY	CCEY/L
24 h
No. of C. difficile isolates	13 (13)b	7	10	12	9	5
% of total	68 (68)	37	53	63	47	26
No. of isolates of other species	12 (12)	1	2	0	0	0
48 h
No. of C. difficile	16 (16)	14	16	17	16	15
% of total	84 (84)	74	84	89	84	79
No. of isolates of other species	34 (34)	26	9	18	6	9

^aA total of 19 isolates were recovered within 48 h using a combination of all media.

^bNumbers in parentheses indicate number or percentage of isolates forming gray or black colonies.