Ticiency of the
1350 serum samples were collected from slaughtered sheep from 9 governorates (Cairo, Giza, Qalubia, El-Sharkia, El-Behara, Fayoum, Minia, Matrouh and Aswan) as well as from 140 living sheep at kome Osheim, Fayoum province. The sera were subjected to CFT, AGPT and SNT to reveal the efficiency of the locally produced inactivted RVF vaccine in EGYPT and/or to detect the subclinical infection of RVF virus in sheep. The results of the screening with CF, AGP and SN tests as well as the titration of some positive samples with CFT and SNT are presented in this work together with its explanation and interpretation.