TABLE 2.

MLST, PFGE, O-antigen serotyping, and ompA and rpoB analyses of Cronobacter strains isolated from an infant formula production factory in China from 2009 to 2012^a

Cronobacter species	Strain no.	ID	Source	ST	CC	PT	OT	ompA allele designation	rpoB cluster
C. sakazakii	CE61	887	Final product	4	4	21	O2	55	1
C. sakazakii	CE64	888	Final product	4	4	22	O2	6	1
C. sakazakii	CE67	889	Final product	4	4	23	O2	6	1
C. sakazakii	CE60	863	U valve tube	1	1	3	O1	3	2
C. sakazakii	CE63	864	Powder lumps after spray drying	1	1	3	O1	3	2
C. sakazakii	CE70	866	Final product	1	1	3	O1	3	2
C. sakazakii	CE71	867	Final product	1	1	3	O1	3	2
C. sakazakii	CE72	868	Final product	1	1	3	O1	3	2
C. sakazakii	CE73	869	Final product	1	1	3	O1	3	2
C. sakazakii	CE74	870	Powder lumps on fluidized bed	1	1	3	O1	3	2
C. sakazakii	CE59	862	Raw material	1	1	12	O1	3	2
C. sakazakii	CE79	871	Powder lumps on fluidized bed	1	1	14	O1	3	2
C. sakazakii	CE30	906	Final product	64	64	2	O2	6	3
C. sakazakii	CE31	908	Final product	64	64	2	O2	6	3
C. sakazakii	CE36	911	Powder lumps on fluidized bed	64	64	2	O2	6	3
C. sakazakii	CE62	913	Powder lumps on fluidized bed	64	64	2	O2	6	3
C. sakazakii	CE68	914	Powder lumps on fluidized bed	64	64	2	O2	6	3
C. sakazakii	CE77	915	Final product	64	64	2	O2	6	3
C. sakazakii	CE78	916	Final product	64	64	2	O2	6	3
C. sakazakii	CE75	711	Final product	261	64	2	O2	6	3
C. sakazakii	CE76	922	Final product	261	64	2	O2	6	3
C. sakazakii	CE33	909	Raw material	64	64	34	O2	6	3
C. sakazakii	CE58	896	Raw material	17	17	27	O2	22	6
C. sakazakii	CE32	904	Final product	50		2	O2	21	3
C. sakazakii	CE65	710	Fixed bed	269		13	O7	6	10
C. sakazakii	CE66	921	Fixed bed	269		6	O7	6	10
C. malonaticus	CMa5	920	Raw material	258		7	MaO2	24	9

^aID, strain identification code in the Cronobacter MLST databases; ST, sequence type; CC, clonal complex (defined as clusters of sequence types with single-locus variants); PT, pulsotype; OT, O-antigen serotype.