Merck Animal Health Prestige Tetanus Horse and Livestock Vaccine has been shown to be effective for the vaccination of healthy horses, cattle, swine and sheep 6 months of age or older against tetanus. This tetanus vaccine for cattle is a core vaccine and should be administered annually. The horse tetanus vaccine may be used with pregnant mares and injured horses. Use this vaccine with horses of all life stages. It's recommended by AAEP for all horses, every year according to AAEP Core Vaccine Guidelines.

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