Fig. 5.

Absence of virus replication in vaccinated animals. Viremia in blood samples was determined by RT-PCR. Ct values are represented with a colour gradient from green (high) to red (low) corresponding low to high viral loads. Values above 40 were considered as not detected (ND). Control animals in group C (C1 & C2) were respectively euthanized at 11 and 10 days post challenge, due to severe AHS symptoms (black). (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)