African Horse Sickness
Early Warning System
2016/2017 outbreak.
Outbreak Alert:
Maltahoehe, NAM.
Outbreak Alert:
White river, MPU.
Outbreak Alert:
Kyalami, GAU.
Urgent! Press Release
AHS Trust Research Support and Programmes
Posted: 3/2/2017, 19:58.
Notice of restricted African Horse Sickness Vaccination Period
Notice of restricted African Horse Sickness Vaccination Period
Posted: 14/4/2015, 21:33.
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Frequently Asked Questions (FAQs)

When is the best time to vaccinate a new born foal? I read that the anti-bodies the foal receives from the mare, will only last 3 weeks and that the foal only starts building its own antibodies by the age of 3 months?

Asked: 3/1/2008, 12:26 by Antia Schulze.
Answered: 20/1/2008, 21:51 by Douglas Welsh, James Urry.

  1. If the mare was vaccinated prior to the foaling, do not vaccinate the foal under 4 months of age.
  2. Antibodies in foals from vaccinated mares wane between 4-6 months.
  3. If the mare was not vaccinated, then you can vaccinate the foal from 3 months of age and repeat 6 months later.
  4. The foals own immune process does not function under 3 months.
  5. As you are entering AHS time, take all precautions with repellants etc.

Submitted by: Dave Mullins, Equine Veterinarian


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