Abstract
Indirect competitive ELISA test used, for detection of non-structural protein (3ABC) in 460 serum samples of infected animals revealed that 421 samples were positive (91.5%) and 39 samples were negative (8.5%), with 91.5% sensitivity and 28.4% specifity. Blood picture revealed significant (P<0.05) increase in total leukocytic count, mean corpuscular volume, mean corpuscular hemoglobin and the percentage of granulocytes, and significant decrease in the total erythrocytic count and packed cell volume.