Eryvac® is registered for the control of Erysipelas polyarthritis in lambs and sheep. Erysipelas infection may result in damage to the joints of sheep leading to arthritis. To protect lambs from birth for 6-8 weeks, vaccinate the ewe before lambing (safe in all stages of pregnancy). Lambs can be vaccinated from 3 weeks of age, with 2 doses they are protected for 12 months. This product may be used in the Glanvac+Eryvac Dual Vaccinator and reused for 30 days after opening after following label instruction.