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Also Known As: '''''Gall sickness''''' — '''''Gallsickness''''' — '''''Tick fever''''' (Australia) — '''''Tristeza''''' (Portugal)
Also Known As: '''''Gall sickness''''' — '''''Gallsickness''''' — '''''Tick fever''''' (Australia) — '''''Tristeza''''' (Portugal)
Caused by: '''''[[Anaplasma marginale]] — Anaplasma ovis — A. ovis — Ehrlichia bovis
Caused by: '''''Anaplasma marginale — Anaplasma ovis — A. ovis — Ehrlichia bovis
==Introduction==
==Introduction==
[[File:Anaplasmosis.jpg|thumb|200px|right|''Rickettsia'' sp. inside tick haemolymph cells (sourced from Wikimedia Commons)]]
[[File:Anaplasmosis.jpg|thumb|200px|right|''Rickettsia'' sp. inside tick haemolymph cells (sourced from Wikimedia Commons)]]
Anaplasmosis is a ruminant disease caused by the [[:Category:Rickettsiales|'''rickettsial''']] pathogens ''[[Anaplasma marginale]]'', ''A. ovis'', ''A. mesaeterum'' and ''Ehrlichia bovis''.
Anaplasmosis is a ruminant disease caused by the [[:Category:Rickettsiales|'''rickettsial''']] pathogens ''Anaplasma marginale'', ''A. ovis'', ''A. mesaeterum'' and ''Ehrlichia bovis''.
These rickettsial parasites reside exclusively within the '''[[erythrocytes| red blood cells]]''' of their hosts.
These rickettsial parasites reside exclusively within the '''[[erythrocytes| red blood cells]]''' of their hosts.
Cattle, sheep, deer, antelope and wild ruminants can all be affected.
Cattle, sheep, deer, antelope and wild ruminants can all be affected.
''A. marginale'' is usually the causative agent in cattle and wild ruminants, while ''A. ovis'' is most commonly isolated in sheep and goats.
''A. central'' caused mild disease in cattle and is now the foundation for some vaccines.
''A. central'' caused mild disease in cattle and is now the foundation for some vaccines.
Animal Health & Production Compendium, Anaplasmosis datasheet, accessed online 02/06/2011 @ http://www.ahpc.org/
Animal Health & Production Compendium, Anaplasmosis datasheet, accessed online 02/06/2011 @ http://www.ahpc.org/
{{review}}
[[Category:Lymphoreticular and Haematopoietic Diseases - Cattle]]
[[Category:Lymphoreticular and Haematopoietic Diseases - Cattle]]
[[Category:CABI Expert Review]]
[[Category:CABI Expert Review]]