Table 1. Studies of potency test of HS vaccine (P-52), before passage in calf (natural host) from June 12 to June 18, 2008.

Vaccinated group	Culture dilute	Mortality	Dead	Survive	Accumulated value		Mortality ratio	Percentage of mortality
					Dead	Survive
A1	10−1	3/5	3	2	16	2	16/18	88.88
A2	10−2	4/5	4	1	13	3	13/16	81.25
A3	10−3	3/5	3	2	9	5	9/14	64.24
A4	10−4	4/5	4	1	6	6	6/12	50.00
A5	10−5	2/5	2	3	2	9	2/11	18.18
A6	10−6	0/5	0	5	0	14	0/14	00
A7	10−7	0/5	0	5	0	19	0/19	00
A8	10−8	0/5	0	5	0	24	0/24	00
A9	10−9	0/5	0	5	0	29	0/29	00
A10	10−10	0/5	0	5	0	34	0/34	00