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In 2 field trials vaccination or different anthelmintic treatments against D. viviparus infections were used in 6 groups of first year grazing cattle. The antibody response to lungworm infections was determined using an ELISA. Cattle treated once or repeatedly at long intervals with levamisole...

Schnieder, T.; Bellmer, A.; Wheeler, S.
Journal of Veterinary Medicine. Series B, 1992, 39, 8, pp 563-570