| characterization of attenuated theileria annulata vaccines from spain and the sudan. | theileriosis caused by theileria annulata can be effectively prevented by vaccination with attenuated, cultured schizonts. although these attenuated vaccines have been applied for a long time, not much is known about the fate of the vaccine strain in the field. here, two experimental spanish vaccine strains originating in cádiz and cáceres, and one sudanese strain are studied to address the development of a carrier status and the infectivity for hyalomma ticks. moreover, the heterogeneity of the ... | 2000 | 11193667 |