Unique EHV-1 antigen and novel adjuvant. Proven efficacious against EHV-1 & EHV-4 by chal­lenge studies. Flexible routes of administration. Proven safe with minimal vaccine site reaction. Safe for use in pregnant mares. Asceptically inoculate horses IM with a 2 mL dose. Administer a second 2 mL dose IM in 3-4 weeks using a different injection site. Administer a third 2 mL dose in 3-4 weeks either IM or IN. Revac­cinate annually and prior to anticipated exposure, either IM or IN.