. 2014 Jul 10;159(11):2977–2987. doi: 10.1007/s00705-014-2163-7

Table 1.

Experimental design for sow immunization

Group	Time prior to farrowing
Group	6 weeks	4 weeks	2 weeks
1	Placebo^a	PEDV live vaccine^b	Inactivated PEDV vaccine^b
2	Placebo	PEDV live vaccine	PEDV S1 immunogen
3	PEDV S1 immunogen^a	PEDV S1 immunogen	PEDV S1 immunogen
4	Placebo	Placebo	Placebo

^aPlacebo (cell culture medium) and protein (PEDV S1) immunizations were given intramuscularly with the oil-in-water adjuvant

^bCommercial PEDV live and inactivated vaccines were administrated intramuscularly according to the manufacturers’ instructions with the oil-in-water adjuvant