TABLE 2.

Number of blood cultures required to detect common microorganisms causing unimicrobial bacteremia and fungemia

Microorganism(s)	Four blood cultures obtained					Three blood cultures obtained
	No. of BSI episodes	Cumulative % detected by culture no.:				No. of BSI episodes	Cumulative % detected by culture no.:
		1	2	3	4		1	2	3
S. aureus	100	93	97	100		75	87	93	100
Coagulase-negative staphylococci	66	64	85	100		41	71	98	100
Enterococcus spp.	36	67	80	89	100	47	68	87	100
Streptococci	26	77	85	100		20	85	100
Escherichia coli	43	72	91	95	100	20	65	90	100
Klebsiella pneumoniae	40	78	90	98	100	25	76	88	100
P. aeruginosa	15	60	85	100		16	62	94	100
C. albicans	20	60	85	95	100	15	60	83	100
Candida glabrata	8	75	88	100		10	80	100