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Bulletin No. 19 - Fall 2004
18th IPVS Congress, Hamburg, Germany, 2004Porcine Reproductive and Respiratory Syndrome (PRRS)
LEBRET A, LACLADERE S, TESSIER P
Potential influence of repeated vaccination against PRRS on the detection of virus infected sows in French herds proposed for eradication
Proceedings of the 18th IPVS Congress, Hamburg, Germany, 2004 - Volume 1:92
Sows from a PRRSV-negative herd were submitted to the following vaccination schedule: priming and booster followed by an additional vaccination at 60-70 days of each gestation. They were serologically monitored during two gestations by IDEXX ELISA. Repeated vaccination with a killed vaccine was shown not to hinder the identification of PRRSV-positive sows by blood testing providing that sampling be done at least 3 months after the last injection. Therefore the use of a killed vaccine can be useful when associated to sow replacement in a context of PRRS eradication.
