Figure 5.

Overview of the induction of fever (body temperature > 40 °C) in piglets originating from routinely PRRSV vaccinated, seropositive sows (E+ piglets) or piglets originating from routinely PRRSV vaccinated, seronegative/slightly seropositive sows (E− piglets)Piglets were either non-vaccinated (NoVac), intramuscularly vaccinated (IM) or intradermally vaccinated (ID) at 3 weeks of age with the same PRRSV-1 MLV as used in the sows and all piglets were intranasally challenged with the PRRSV-1 07V063 strain at 6 weeks of age. Fever induction was determined from the day of infection to 24 days post-infection and visualized as the area under the curve (AUC) value for fever (left) or as the number of days with fever (right). The mean values ± standard error of the mean are shown as error bars for each experimental group.