TABLE 2.

Frequencies of occurrence of ehxA, eae, and slt in isolates belonging to serotypes of SLTEC less commonly associated with disease in humans

Serotype	No. of isolates		% of isolates with ehxA		% of isolates with eae		% of isolates with slt-I		% of isolates with slt-II
	Human	Bovine	Human	Bovine	Human	Bovine	Human	Bovine	Human	Bovine
O2:H6	2	0	0		0		0		100
O2:H29	0	4		0		0		0		100
O7:H4	0	2		0		0		0		100
O15:H-a	6	0	50		50		33		83
O22:H8	2	12	100	100	0	0	100	92	100	83
O38:H21	2	4	100	100	0	0	50	50	100	100
O45:H2	3	1	100	100	100	100	100	100	0	0
O48:H21	4	0	100		0		50		100
O55:H7	3	0	0		100		33		67
O80:H-	0	3		100		100		33		100
O91:H-	3	1	0	100	0	0	100	100	100	0
O91:H10	2	0	0		0		0		100
O91:H21	6	3	100	100	0	0	0	100	100	100
O98:H-	0	2		100		0		50		50
O113:H4	1	15	0	0	0	0	0	93	100	53
O115:H18	0	2		100		0		100		100
O117:H4	5	4	0	0	0	0	0	75	100	100
O118:H12	2	0	0		0		0		100
O118:H16	0	2		100		100		100		0
O119:H-	0	8		25		13		100		0
O121:H19	8	0	38		88		0		100
O128:H-	2	0	50		0		50		50
O128:H2	5	0	80		0		80		100
O132:H-	0	11		0		0		9		100
O163:H19	0	5		100		0		40		80
O165:H-	0	2		50		100		0		100
O165:H25	2	0	0		100		0		100
OX3:H21	1	35	0	17	0	0	0	14	100	97
O?:H2b	1	9	0	44	0	0	0	56	100	89
O?:H4	0	3		0		0		67		100
O?:H8	0	3		100		0		67		67
O?:H19	0	10		90		0		50		90
O?:H25	0	13		100		8		62		67
O?:H-	1	21	0	71	0	71	0	19	100	81
Othersc	24	8	46	63	21	13	79	50	46	63
%d			46	51	27	14	45	47	79	79

^aH-, no H antigen present. 

^b?, antigen present but not designated. 

^cSerotype for which there was only one isolate in the collection. 

^dPercentage of the total number of isolates (85 human isolates and 183 bovine isolates).