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.
Site Information
Last Updated:
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Frequently Asked Questions (FAQs)

When is the most ideal time to vaccinate?

Asked: 22/11/2007, 10:03 by renate du plessis.
Answered: 24/11/2007, 16:08 by Douglas Welsh, James Urry.

The best time to vaccinate is 5 months prior to the anticipated outbreak period. This is due to the fact that it takes 5 months for the horse to build immunity to the highest level from the vaccine. It is also the best time as the midge population will be at low levels so these will be no risk to the horses.Theanticipated outbreak is most severe in March according to our data, so the ideal time to vaccinate is around November.


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