Table 4.

Result of protection rates of different groups

	Groups	Positive rate (number of positive/number of test, n = 6)				Infection rate (%)	Protection rate (%)
		PCR	RUT	Immunohistochemistry	Gram stain
Bland group (PBS)		6/6	6/6	6/6	6/6	100	0
Intramuscular injection	CTB	6/6	6/6	6/6	6/6	100	0
	IB	6/6	6/6	6/6	3/6	100	0
	CTB+IB	6/6	6/6	6/6	6/6	100	0
	BIB	4/6	4/6	4/6	4/6	66.7	33.3
Oral group	rCTB	6/6	6/6	6/6	6/6	100	0
	rIB	5/6	6/6	6/6	6/6	100	0
	rCTB+rIB	6/6	6/6	6/6	6/6	100	0
	rBIB	1/6	1/6	3/6	1/6	16.7	83.3