Fig. 5. No infectious virus recovered from plasma of RVFV-4s inoculated marmosets.

Plasma samples were assessed for the presence of viral RNA by RT-qPCR (a, b) and for infectious virus by virus isolation (c, d). Samples that tested negative are depicted at the detection limit of the PCR (2.6 log10 RNA copies/ml) or virus isolation (1.95 log10 TCID₅₀/ml). In the first week post inoculation, the animals were allotted to one of two sampling groups. Animals in each group were bled every other day to minimize withdrawal volumes (see Fig. 1). Averages and SEM are presented for each group.