TABLE 3.

Detection of enterotoxin genes in food-borne Aeromonas spp.

Organism	Source	No. of foods positive for Aeromonas spp.	No. of enterotoxin-positive strain isolates	Occurrence of enterotoxin gene amplicon profile:
				act	alt	act/alt	act/alt/ast	alt/ast	None
A. caviae complex	Beef	14	10	1	3	5	0	0	1
	Fish	21	8	0	1	7	0	0	0
	Lamb	5	2	0	1	1	0	0	0
	Poultry	44	44	3	13	23	0	0	5
	Pork	18	14	0	2	11	0	0	1
	Vegetables	118	99	2	79	6	0	0	12
	Salmon swabs	48	0	0	0	0	0	0	0
	Sausages	9	10	0	2	5	0	1	2
	Seafood	53	4	0	0	4	0	0	0
Subtotal		330	191	6	101	62	0	1	21
A. hydrophila complex	Beef	14	18	1	1	16	0	0	0
	Fish	21	16	1	3	12	0	0	0
	Lamb	5	7	0	1	6	0	0	0
	Poultry	44	48	2	2	38	0	0	6
	Pork	18	28	2	1	24	0	1	0
	Vegetables	118	60	2	6	40	4	2	6
	Salmon swabs	48	5	0	0	4	0	0	1
	Sausages	9	13	1	1	8	0	1	2
	Seafood	53	11	0	0	10	0	0	1
Subtotal		330	206	9	15	158	4	4	16
A. sobria complex	Beef	14	1	0	1	0	0	0	0
	Fish	21	0	0	0	0	0	0	0
	Lamb	5	0	0	0	0	0	0	0
	Poultry	44	6	1	0	1	0	0	4
	Pork	18	5	1	2	2	0	0	0
	Vegetables	118	1	1	0	0	0	0	0
	Salmon swabs	48	0	0	0	0	0	0	0
	Sausages	9	0	0	0	0	0	0	0
	Seafood	53	0	0	0	3	0	0	0
Subtotal		330	13	3	3	3	0	0	4
Aeromonas spp.	Beef	14	0	0	0	0	0	0	0
	Fish	21	0	0	0	0	0	0	0
	Lamb	5	0	0	0	0	0	0	0
	Poultry	44	0	0	0	0	0	0	0
	Pork	18	0	0	0	0	0	0	0
	Vegetables	118	0	0	0	0	0	0	0
	Sausages	9	0	0	0	0	0	0	0
	Salmon swabs	48	89	9	7	65	0	0	8
	Seafood	53	38		3	2	27	0	0
Subtotal		330	127	12	9	92	0	0	14
Total		330	537	30 (6%)	128 (23.8)	315 (58.7)	4 (0.7)	5 (0.9)	55 (10.2)