Vaccination schedule

A horse’s vaccination program should be based on the risk of disease for the horse, the yard and also the economic consequences of an outbreak. In general, the more a horse is in contact with other horses the greater its risk of contracting strangles.

Click on the image to enlarge

The basic vaccination schedule is two submucosal vaccinations four weeks apart.

Horses in higher risk situations should be revaccinated with a single dose every three months.

For horses in medium risk situations revaccination every six months rather than every three months can be considered. If horses are revaccinated every six months, a prompt booster with a single dose should be given if an outbreak of strangles occurs more than three months after the last booster (see table).

There is generally no need to vaccinate horses in lower risk situations.

This information is brought to you by MSD Animal Health, manufacturers of Equilis® StrepE. Equilis® StrepE can only be prescribed by your veterinary surgeon whose advice should be sought. Further information on Equilis® StrepE can be found here.