Frequently Asked Questions (FAQs)
Asked: 23/1/2008, 13:35 by Michelle Maine.
Answered: 26/1/2008, 15:59 by James Urry.
So far you have correctly followed the recommended vaccination schedule for a previously unexposed horse or a horse which has received no colostral immunity from its mother. In my opinion the horse will have a fairly good/strong immunity at this stage and I would not advise you vaccinate it more frequently than that advised by the manufacturers, which is basically once a year following the initial 2 vaccinations 6 months apart. No vaccine is 100% effective anyway (usually 95%) but you would have given it the majority of the immunity (80- 90% at an estimate) it will achieve after the initial 2 vaccinations. Subsequent vaccinations only add a little more each time. One can "over-vaccinate" and consequently the immune system can't respond adequately. A third series within 6 months would do no harm but thereafter annually would be more than sufficient to protect the horse.
Dr Gary Buhrmann, Chief State Veterinarian, Boland