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Anaplasmosis in Cattle

Description


Anaplasmosis, formerly known as gall sickness, traditionally refers to a disease of ruminants caused by obligate intraerythrocytic bacteria of the order Rickettsiales, family Anaplasmataceae, genus Anaplasma . Cattle, sheep, goats, buffalo, and some wild ruminants can be infected with the erythrocytic Anaplasma . Anaplasmosis occurs in tropical and subtropical regions worldwide (~40° N to 32° S), including South and Central America, the USA, southern Europe, Africa, Asia, and Australia. The Anaplasma genus has recently been expanded to include species transferred from the genus Ehrlichia , now named Anaplasma phagocytophilum (compiled from species previously known as Ehrlichia phagocytophila , E equi , and human granulocytic ehrlichiosis agent), A bovis (previously E bovis ), and A platys (previously E platys ), all of which invade blood cells other than erythrocytes of their respective mammalian hosts. Bovine anaplasmosis is of economic significance in the cattle industry.

Additional information


Anaplasmosis is an infectious, arthropod-borne hemoparasitic disease of cattle and other ruminants. Important in area where vectors, especially ticks, are common. Common in cattle but a minor problem in sheep and goats. Signs due to red cell damage by the intraerythrocytic rickettsiae ANAPLASMA MARGINALE and A. CENTRALE in cattle and A. OVIS in sheep and goats. Hemoglobinuira is not present. Older cattle are more susceptible to clinical disease.Anaplasmosis, formerly known as gall sickness, traditionally refers to a disease of ruminants caused by obligate intraerythrocytic bacteria of the order Rickettsiales, family Anaplasmataceae, genus Anaplasma . Cattle, sheep, goats, buffalo, and some wild ruminants can be infected with the erythrocytic Anaplasma . Anaplasmosis occurs in tropical and subtropical regions worldwide (~40° N to 32° S), including South and Central America, the USA, southern Europe, Africa, Asia, and Australia. The Anaplasma genus has recently been expanded to include species transferred from the genus Ehrlichia , now named Anaplasma phagocytophilum (compiled from species previously known as Ehrlichia phagocytophila , E equi , and human granulocytic ehrlichiosis agent), A bovis (previously E bovis ), and A platys (previously E platys ), all of which invade blood cells other than erythrocytes of their respective mammalian hosts. Bovine anaplasmosis is of economic significance in the cattle industry.
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