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Seybold, Nele Kristin (2011): Prävalenz von Angiostrongylus vasorum bei Hunden in Bayern. Dissertation, LMU München: Faculty of Veterinary Medicine
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Abstract

Latest studies show, that not only worldwide, but also in Germany the prevalence of A. vasorum has increased in the dog population over the last years (Barutzki und Schaper, 2009; Hermosilla et al., 2009; Taubert et al., 2009). Therefore, the aim of this study was to investigate the relevance of this lungworm in dogs in the state of Bavaria, Germany. Faecal samples of three consecutive days were examined for presence of A. vasorum larvae in a total of 276 dogs from Bavaria between April 2008 and April 2010 by the Baermann funnel technique. Of these 276 dogs, 160 showed clinical signs suspicious for canine angiostrongylosis. Of those 160 dogs, 90 showed respiratory disease, 47 had neurological signs, and 23 dogs had bleeding disorders. In addition, a control group of 116 clinically healthy dogs from Bavaria were coprologically examined for lungworm infections. A second aim of the study was to investigate clinical, laboratory, and radiological findings of A.-vasorum-positive dogs. Only one of the 276 examined dogs was tested positive for A. vasorum. This dog belonged to the group with respiratory signs. Thus, the prevalence for all 276 dogs was 0.36 %. The prevalence for the 160 dogs with suspicious clinical signs was 0.63 %, while 1.11 % of dogs in the respiratory group were A.-vasorum-positive. The A.-vasorum-infected dog was an eleven year old, female Labrador-Mix from the city of Munich. The dog was presented because of acute cough, retching, and anorexia. Laboratory findings were eosinophilia, thrombocytopenia, and hyperglobulinemia. Thoracic radiographs showed a mixed alveolar-interstitial lung pattern with diffuse micronodular opacities. The prevalences established in this study show that the risk of an infection with A. vasorum in dogs with suspicious clinical signs as well as in clinically healthy dogs in Bavaria can be considered low at the moment. However, recent studies have shown that the prevalence of A. vasorum has increased over the last years in Germany (Barutzki und Schaper, 2009; Hermosilla et al., 2009; Taubert et al., 2009), and high prevalences have been detected in the German states of Baden-Wurttemberg and Saarland (Barutzki und Schaper, 2009). Therefore, it cannot be excluded that the prevalence of A. vasorum in Bavaria and other German states might increase in the future. As a consequence, practicing veterinarians in Germany should be familiar with the various clinical signs associated with canine angiostrongylosis and should always consider an infection as a possible differential diagnosis in dogs with suspicious clinical signs.