Table 3. Neutralizing antibody response to FMDV C-S8c1 in sera of pigs vaccinated with C-S8p260.

Animals	Virus neutralization titers (VNT)a at the indicated day after immunization
	0	15	30	32 (D2 pc)b	39 (D7 pc)c
Group #1
1	<0	1.2	1.8	2.5	3.7
2	<0	1.3	1.5	3.0	3.6
3	<0	2.2	3.4	3.4	3.5
4	<0	1.9	2.5	2.5	3.3
5	<0	1.5	2.3	2.3	3.4
6	<0	1.3	2.8	2.7	2.7
Group #2
7	<0	2.4	2.3	2.5	2.8
8	<0	<0	1.8	2.3	3.0
9	<0	<0	2.2	2.5	3.0
Group #3
10	<0	<0	1.8	1.8	2.7
11	<0	<0	1.4	1.3	3.0
Group #4
12	<0	<0	<0	1.7	1.7
13	<0	0.4	2.0	2.0	3.1
14	<0	2.5	2.5	2.6	3.2
Group #5
15	<0	<0	<0	<0	2.3d
16	<0	<0	<0	<0	3.1d
17	<0	<0	<0	<0	2.2d

^aVNT, virus neutralization titer (log₁₀ of the reciprocal of the last dilution able to neutralize 70% of 100 PFUs of FMDV C-S8c1).

^bDay 2 post-challenge with 10⁵ PFUs of FMDV C-S8c1.

^cDay 7 post-challenge with 10⁵ PFUs of FMDV C-S8c1.

^dFor control animals, VNT was obtained at day 12 pc.