TABLE 5.

Comparative yield of clinically important unimicrobial episodes of bacteremia and fungemia by FN versus SN anaerobic blood culture bottles paired with an FA bottle

Microorganism	No. of isolates detected by:			P value
	Both sets	FA-FN only	FA-SN only
Gram-positive bacteria
Staphylococcus aureus	109	21	3	<0.001
Coagulase-negative staphylococci	55	1	0	NSa
Streptococcus spp.b	11	1	1	NS
Enterococcus spp.c	32	1	0	NS
Bacillus sp.	0	1	0	NS
Gram-negative bacilli
Enterobacteriaceaed	55	8	0	<0.025
Other gram-negative bacillie	10	0	2	NS
Anaerobic bacteriaf	5	5	0	NS
Yeastsg	16	0	1	NS
All microorganisms	293	38	7	<0.001

^aNS, not significant (P > 0.05).

^bIncludes six isolates of viridans group streptococci, five of Streptococcus pneumoniae, and two of Streptococcus pyogenes.

^cIncludes 20 of Enterococcus faecalis and 13 of Enterococcus faecium.

^dIncludes 21 of Escherichia coli; 15 of Klebsiella pneumoniae; 11 of E. cloacae; 4 of Serratia marcescens; 3 of Enterobacter aerogenes; 3 of Klebsiella oxytoca; 2 of Proteus mirabilis; and 1 each of Ewingella americana, Morganella morganii, Serratia liquefaciens, and Salmonella sp.

^eIncludes nine of P. aeruginosa and one each of A. baumannii, Oligella sp., and Haemophilus influenzae.

^fIncludes three of Bacteroides fragilis, two of the Bacteroides fragilis group, and one each of Clostridium clostridioforme, Clostridium ramosum, Bacteroides caccae, Bacteroides distasonsis, and Bacteroides thetaiotaomicron/ovatus.

^gIncludes five of Candida albicans, five of Candida glabrata, three of C. parapsilosis, three of Candida tropicalis, and one of Candida lusitaniae.