TABLE 1.

B. wadsworthia isolates used in this study

Strain	Date of isolation (yr/mo/day)	Patient data				Other isolate(s) from patient:
		Age (yr)/sexa	Specimen	Type of infection	Underlying condition	Anaerobic	Aerobic
NBW1	1995/6/9	60/F	Pus	Abscess	Cholelithiasis	B. fragilis	None
NBW2	1995/8/11	69/F	Resected tissue	Peritonitis	Appendicitis	B. fragilis	Escherichia coli, Streptococcus spp.
NBW3	1995/10/31	53/F	Pus	Liver abscess	Cholangiocarcinoma	None	Klebsiella pneumoniae, Staphylococcus epidermidis
NBW4	1996/7/22	82/M	Pus	Abscess	Ileus following diverticulitis	None	E. coli, Pseudomonas aeruginosa, Enterococcus faecalis
NBW5	1996/7/31	79/F	Pus	Abscess	Colon cancer	B. fragilis	K. pneumoniae
NBW6	1996/11/18	4/M	Peritoneal fluid	Peritonitis	Appendicitis	B. fragilis, Peptostreptococcus prevotii	E. coli

^aF, female; M, male.