Merck Prestige Tetanus has been shown to be effective for the vaccination of healthy horses, cattle, swine and sheep 6 months of age or older against tetanus. Duration of immunity has not been established.
For primary vaccination aseptically administer 1 mL intramuscularly, repeat with a single dose in 3-4 weeks. Historically, annual revaccination with this product has been recommended. The need for annual booster vaccination has not been established for this product. For more information on revaccination frequency, consult your veterinarian.