Horses, inject one 1 mL dose intramuscularly using aseptic technique.
Administer a second 1 mL dose 4 to 8 weeks after the first dose.
Revaccinate annually using one 1 mL dose.
PRECAUTIONS: Store in the dark at 2° to 7°C (35° to 45°F). AVOID FREEZING. SHAKE WELL. Transitory local reactions at the injection site may occur. Do not vaccinate within 21 days before slaughter. In case of anaphylactoid reaction, administer epinephrine.