(1) Whether she has been informed of independent tests being conducted to establish if the vaccines (a) Smithburn and (b) Clone 13 produced by Onderstepoort Biological Products Ltd (OBP) is still effective to combat Rift Valley fever; if not, what is the position in this regard; if so, what actions were taken to assist OBP in establishing the effectiveness of vaccines; (2) what steps are being taken (a) by her department to deal with the potential consequences of defective vaccines for the agricultural sector and (b) to ensure that the spread of Rift Valley fever is contained?