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Acta Vet Scand. 2013 May 1;55:38. doi: 10.1186/1751-0147-55-38.

Congenital infection with Anaplasma phagocytophilum in a calf in northern Germany.

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  • 1Institute for Animal Breeding and Genetics, University of Veterinary Medicine Hannover, Bünteweg 17p, D-30559 Hannover, Germany.


Anaplasma phagocytophilum is a Gram-negative, obligate intracellular tick-transmitted bacterium that replicates in neutrophils. It causes tick-borne fever (TBF) in sheep and cattle, but also elicits febrile disease in humans as well as in other domestic animals such as dogs, horses, and cats. Although increasingly recognized in Europe, the first laboratory-confirmed case of TBF in cattle from Germany has been published only recently. We here present the unusual case of an intrauterine transmission of A. phagocytophilum in a calf from northern Germany. To our knowledge, this is the first report of such an event occurring under field conditions in cattle.

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