| theileria parva (kasoba): isolation and challenge of cattle recovered from infection with other theileria parva stocks. | a pathogenic theileria stock was isolated from control cattle during an east coast fever (ecf) field immunization trial at kasoba near karonga town in northern malawi. a stabilate of this stock caused severe fevers and prolonged parasitosis in theileria parva naive cattle, resulting in the death of 5 out of 12 cattle despite treatment. in contrast, this parasite stock caused mild to moderate reactions in 17 cattle immunized with the trivalent t. parva stabilate except in 3 animals which develope ... | 1996 | 8881419 |