Antimicrobial susceptibility among gram-negative isolates collected in the USA between 2005 and 2011 as part of the Tigecycline Evaluation and Surveillance Trial (T.E.S.T.)

Table 1 Numbers of isolates contributed by census region ^a in T.E.S.T.

Pathogen	Pacific	Mountain	West North Central	East North Central	Middle Atlantic	New England	South Atlantic	East South Central	West South Central	Total
A. baumannii	103	72	332	694	721	77	562	162	177	2900
E. coli	240	235	813	1477	1892	226	1248	391	398	6920
K. pneumoniae	181	164	590	1174	1518	170	1096	331	311	5535
K. oxytoca	57	50	176	301	279	45	145	49	68	1170
S. marcescens	87	61	302	544	609	67	475	140	136	2421
Enterobacter spp.	227	192	770	1351	1500	198	1118	339	370	6065
Total	895	774	2983	5541	6519	783	4644	1412	1460	25011

^a Pacific = California, Hawaii, Oregon, and Washington; Mountain = Arizona, Colorado, New Mexico, Montana, and Utah; West North Central = Iowa, Kansas, Minnesota, Missouri, Nebraska, North Dakota, and South Dakota; East North Central = Indiana, Illinois, Michigan, Ohio, and Wisconsin; Middle Atlantic = New Jersey, New York, and Pennsylvania; New England = Connecticut, Maine, Massachusetts, New Hampshire, and Vermont; South Atlantic = Delaware, District of Columbia, Florida, Georgia, Maryland, North Carolina, South Carolina, Virginia, and West Virginia; East South Central = Alabama, Kentucky, Mississippi, and Tennessee; West South Central = Arkansas, Louisiana, Oklahoma, and Texas.

ISSN: 1476-0711