Preliminary trials for the improvement of the locally produced inactivated RVF vaccine

After the last outbreak of RVF in Egypt during 1993, research works were directed towards the development of a much higher immunogenic and more potent inactivated RVF vaccine. The present work reports on the production of a much safer, more economic and potent inactivated vaccine as well as increasing its shelf live validity. The vaccine was safe when tested in suckling mice and potent when tested in adult mice and sheep. It had an ED[50] of 0.0005/ml. Yet, this vaccine has to be tried on a large scale to judge upon its validity for field use and/or replacing the present classical inactivated one