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Comparative evaluation of the efficacy of commercial and prototype PRRS subunit vaccines against an HP-PRRSV challenge

Do Tien DUY, Hanjin KIM, Jiwoon JEONG, Kee Hwan PARK, Siyeon YANG, Taehwan OH, Seeun KIM, Ikjae KANG and Chanhee CHAE

ABSTRACT. 

The objective of this study was to compare the efficacy of a commercial porcine
reproductive and respiratory syndrome (PRRS) subunit vaccine and a prototype PRRS II
subunit vaccine against a highly pathogenic PRRS virus (HP-PRRSV) in pigs. Both vaccines were
administered intramuscularly in 2 doses at 21 and 42 days of age, and the pigs were challenged
intranasally with HP-PRRSV at 63 days of age. Pigs vaccinated with the prototype PRRS II subunit
vaccine had...

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