Table 1.

Grouping and treatment of experimental pigs

Group	Vaccine	Vaccine dose (TCID50)	Vaccination day	Challenge dose (TCID50)	Challenge day
1	Live-attenuated PCV1-2b	2 × 103.5	21	2 × 104.8	49
2	Live-attenuated PCV1-2b	2 × 104.0	21	2 × 104.8	49
3	Inactivated PCV1-2b vaccine	2 × 105.0	21	2 × 104.8	49
4a	Inactivated PCV2b vaccine X	2 ml	21	2 × 104.8	49
5	Challenge without vaccination	-	-	2 × 104.8	49
6	Mock group	-	-	-	-

^aOne pig died after routine bleeding at 7 DPV due to massive hemorrhaging