Comparison of Host Immune Responses to Homologous and Heterologous Type II Porcine Reproductive and Respiratory Syndrome Virus (PRRSV) Challenge in Vaccinated and Unvaccinated Pigs
Figure 1
Vaccination with PRRSV-MLV induced complete protection from homologous PRRSV challenge and partial protection from heterologous challenge. (a) Experimental timeline. (b) Rectal temperature of pigs was monitored daily after PRRSV challenge. (c) Gross lung lesion scores present in all lung lobes on DPC 14 were scored using a 4-point scale. (d) PRRSV viral RNA in the serum throughout the study was determined by qPCR. Each bar represents the average of samples from five pigs ± SEM. *.
