Efficacy assessment of an MVA vectored Rift Valley Fever vaccine in lambs by Busquets, N, Lorenzo, G, Lopez-Gil, E, Rivas, R, Solanes, D, Galindo-Cardiel, I, Xavier Abad, F, Rodriguez, F, Bensaid, A, Warimwe, G, Gilbert, S, Domingo, M, Brun, A