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第25号公告板 - Summer 2006

Virology

Porcine Reproductive and Respiratory Syndrome (PRRS)

KESDANGSAKONWUT S, SADA W, LACHAROJE S, SURADHAT S, THANAWONGNUWECH R
Impact of PRRS virus on classical swine fever vaccine.
Proceedings of the International PRRS Symposium, December 2005, poster n°40

An experimental protocol including five groups of 5-7 pigs was designed as follows:

• Pigs infected with classical swine fever virus (CSFV),
• Pigs vaccinated with CSF vaccine and challenged with virulent CSF,
• Pigs infected with porcine reproductive and respiratory syndrome virus (PRRSV) and challenged with CSFV
• Pigs infected with PRRSV, vaccinated with CSF vaccine and challenged with CSFV,
• Control pigs (no infection, no vaccination).

It is noteworthy that CSF vaccination in PRRSV-infected pigs was shown to prolong PRRSV viremia, and that the efficacy of the CSF vaccine failed to protect PRRSV-infected pigs against CSFV.

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