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Bulletin No. 17 - Winter 2003
VirologyPorcine Reproductive and Respiratory Syndrome (PRRS)
New data on homologous protection.
Allen D. Leman Swine Conference 2003: 52-54
BO98440
Homologous immunity should not be taken as granted and PRRSV clearly proves it: animals are not completely protected against further homologous virus challenge since it is followed by a brief viremia, suggesting that, under experimental conditions, homologous immunity, though significant, does not provide a unfailing shield. To what extent this incomplete homologous immunity may have repercussions under field conditions has yet to be determined.
