Increasing Incidence of Canine Leptospirosis in SwitzerlandReport as inadecuate




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Department of Clinical Veterinary Medicine, Vetsuisse Faculty University of Bern, Länggassstrasse 128, CH-3001 Bern, Switzerland





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Abstract A marked increase in canine leptospirosis was observed in Switzerland over 10 years with a peak incidence of 28.1 diagnosed cases-100,000 dogs-year in the most affected canton. With 95% affected dogs living at altitudes <800 m, the disease presented a seasonal pattern associated with temperature r2 0.73 and rainfall r2 0.39, >90% cases being diagnosed between May and October. The increasing yearly incidence however was only weakly correlated with climatic data including number of summer r2 0.25 or rainy days r2 0.38. Serovars Australis and Bratislava showed the highest seropositivity rates with 70.5% and 69.1%, respectively. Main clinical manifestations included renal 99.6%, pulmonary 76.7%, hepatic 26.0%, and hemorrhagic syndromes 18.2%, leading to a high mortality rate 43.3%. Similar to the human disease, liver involvement had the strongest association with negative outcome OR 16.3. Based on these data, canine leptospirosis presents similar features and severity as the human infection for which it therefore can be considered a model. Its re-emergence in a temperate country with very high incidence rates in canines should thus be viewed as a warning and emphasize the need for increased awareness in other species. View Full-Text

Keywords: leptospirosis; dog; zoonosis; climatic data; one health; renal failure; pulmonary hemorrhage leptospirosis; dog; zoonosis; climatic data; one health; renal failure; pulmonary hemorrhage





Author: Andrea Major, Ariane Schweighauser and Thierry Francey *

Source: http://mdpi.com/



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