TABLE 1.

Proportions of isolates which required 16S rRNA gene sequence analysis and numbers of unusual isolates

Bacteria	No. of isolates tested	No. (%) of isolates identified by 16S rRNA analysis	No. of rare or unique isolatesa
Gram-positive cocci	75,537	300 (0.40)	6
Gram-positive rodsb	16,487	524 (3.18)	86
Gram-negative bacteria
Enteric bacteria	51,177	132 (0.26)	3
Other bacteria	26,357	225 (0.85)	14
Anaerobic bacteria	5,780	223 (3.86)	11
Total	175,338	1,404 (0.80)	120

^aIsolates from human samples that have been reported 0 to 10 times.

^bIncluding Mycobacterium spp.