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Molecular and Serological Detection of Anaplasma phagocytophilum in Dogs from Germany (2008-2020).


ABSTRACT: Anaplasma phagocytophilum is an obligate intracellular bacterium that causes granulocytic anaplasmosis in domestic animals, wildlife, and humans and is primarily transmitted by ticks of the Ixodes persulcatus complex. This retrospective study aims to determine the percentages of dogs that tested positive for A. phagocytophilum in Germany. It included the results of direct (polymerase chain reaction [PCR]) and indirect (immunofluorescence antibody test [IFAT], antibody-enzyme-linked immunosorbent assay [ELISA]) detection methods performed in the laboratory LABOKLIN on canine samples provided by German veterinarians from 2008 to 2020. Out of a total of 27,368 dogs tested by PCR, 1332 (4.9%) tested positive, while 24,720 (27.4%) of the 90,376 dogs tested by IFAT/ELISA had positive serology. High rates of positive PCR results were observed in months with known peaks in vector activity, showing that the dynamics of A. phagocytophilum infections in dogs in Germany are consistent with vector activity. In dogs with a positive PCR result, peaks in serology could be observed four weeks after initial testing. Male and senior dogs had higher rates of positive serology. A possible impact of environmental factors such as changes in climate should be investigated further. Overall, the upward trend in positive test results over the years indicates that canine granulocytic anaplasmosis will continue to become increasingly important for veterinary medicine.

SUBMITTER: Schafer I 

PROVIDER: S-EPMC9952382 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature

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Molecular and Serological Detection of <i>Anaplasma phagocytophilum</i> in Dogs from Germany (2008-2020).

Schäfer Ingo I   Kohn Barbara B   Silaghi Cornelia C   Fischer Susanne S   Marsboom Cedric C   Hendrickx Guy G   Müller Elisabeth E  

Animals : an open access journal from MDPI 20230217 4


<i>Anaplasma phagocytophilum</i> is an obligate intracellular bacterium that causes granulocytic anaplasmosis in domestic animals, wildlife, and humans and is primarily transmitted by ticks of the <i>Ixodes persulcatus</i> complex. This retrospective study aims to determine the percentages of dogs that tested positive for <i>A. phagocytophilum</i> in Germany. It included the results of direct (polymerase chain reaction [PCR]) and indirect (immunofluorescence antibody test [IFAT], antibody-enzyme  ...[more]

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