Figure 4From: Efficacy of different DNA and MVA prime-boost vaccination regimens against a Rift Valley fever virus (RVFV) challenge in sheep 12 weeks following vaccinationNeutralizing antibody kinetics. The neutralizing capability of sera from vaccinated and control (mock vaccinated) sheep sampled at different weeks before or after challenge was tested. The values indicate the reciprocal dilution of serum needed to achieve an 80% reduction of viral plaques (PRNT80) in cultured Vero cells.Back to article page