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Distribution of various Amblyomma species in Africa

Term: 2013
Published: February 15, 2013
Revised: October 15, 2013

Heartwater (cowdriosis) is a tick-borne disease of cattle, sheep, goats and some wild ruminants which is caused by a rickettsia, previously known as Cowdria ruminantium, but recently reclassified as Ehrlichia ruminantium. It is now known that there is far more genetic variability among E. ruminantium organisms than had ever been suspected. This has hampered the development of a safe and effective vaccine and the disease remains one of the major causes of stock losses in sub-Saharan Africa, as well as some tropical Pacific and Indian Ocean islands.

About The Instructor

Dr Hein Stoltsz

Dr Hein Stoltsz

  • BVSc(Pret)
  • Senior Lecturer, Department of Veterinary Tropical Diseases,Faculty of Veterinary Science, University of Pretoria, South Africa
Creative Commons Attribution 3.0 Unported
This Work, Heartwater, by Dr Hein Stoltsz is licensed under a Creative Commons Attribution license.