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)

I undestand that the disease is transmitted by midges and can "over-winter" in animals such as zebras but what is the orginal pathogen of the disease?

Asked: 13/1/2008, 16:49 by Abby Chapman.
Answered: 20/1/2008, 21:42 by James Urry.

African Horse Sickness is a virus. It affects all species of Equidae.It is classified as an Orbivirus of the Reoviridae family of which there are 9 serotypes. All serotypes (1-9) are distributed throughout South Africa. The virus is transmitted from animal to animal when Culicoides midge feeds on an infected animal, acquires the virus,and then feedson a susceptible animal, transmitting the virus to the susceptible animal. The virus over-winters during periods of low midge activity (winter) in resistant Equines such as zebra.


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