Table 3. Results obtained from control group G1, G2, and G3 (non-vaccinated and challenged at 7 weeks of age) at euthanization.

Group	Pig #	Euthanization				Virus isolation from spleen	RNA viral from spleen	Note
		Day	Body temperature (℃)	Clinical scores	White blood cell (106/mL-1)
Control G1	46	8	41.2	16	14.3	Positive	Positive	No vaccine, challenge at day 49 with VN91
	47	7	40.9	16	14.1	Positive	Positive
	48	10	41.9	15	13.5	Positive	Positive
	49	8	41.2	16	13.6	Positive	Positive
	50	9	41.8	17	11.2	Positive	Positive
Control G2	51	8	40.7	15	11.1	Positive	Positive	No vaccine, challenge at day 49 with RAHO3/NA
	52	7	40.8	9	13.1	Positive	Positive
	53	9	41.4	9.8	13.7	Positive	Positive
	54	8	40.6	11	14.1	Positive	Positive
	55	11	40.5	16	11.5	Positive	Positive
Control G3	56	8	40.6	15	13.5	Positive	Positive	No vaccine, challenge at day 49 with NAM DINH
	57	8	40.8	10	12.6	Positive	Positive
	58	12	41.1	11	13.5	Positive	Positive
	59	7	40.2	13	13.5	Positive	Positive
	60	7	40.7	16	12.8	Positive	Positive