htherto the provisions for the ineradication of have been on of the use of livetenuated vacines that facines available
Hitherto, the provisions for the control and eradication of bluetongue have been based on experience of the use of live attenuated vaccines that were the only vaccines available.
Hitherto, the provisions for the and eradication of have been on of the use of live attenuated vaccines that vaccines available.