Journal
VETERINARY PARASITOLOGY
Volume 173, Issue 3-4, Pages 255-261Publisher
ELSEVIER
DOI: 10.1016/j.vetpar.2010.06.037
Keywords
Angiostrongylus vasorum; Canine angiostrongylosis; Lungworm; Emerging disease; Dog; Epidemiology; Parasite
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Funding
- Royal College of Veterinary Surgeons' Trust
- Morris Animal Foundation [D06CA-308]
- Novartis Animal Health
- Petplan Charitable Trust
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Infection with the nematode Angiostrongylus vasorum is an emerging cause of canine disease in Europe and part of North America, yet published data on its epidemiology in endemic areas are lacking. This study tested faecal samples from 897 dogs attending veterinary practices in the southern part of Great Britain, a long standing endemic focus. Among 790 dogs presenting with respiratory or other signs broadly suggestive of angiostrongylosis, 16% tested positive on a single Baermann's examination, compared with 2% of healthy dogs in the same catchment areas. Risk factors for positive tests included age (higher risk in younger dogs), season (more cases earlier in the calendar year), and worming history (lower risk if given milbemycin oxime in the past 12 weeks). Sex, neutering status and breed were not significant in terms of risk of testing positive. The most common clinical signs in infected dogs were respiratory, along with non-specific signs such as lethargy and exercise intolerance, while bleeding, neurological and gastrointestinal signs were also recorded. Around half the dogs sampled that showed signs of extra-pulmonary disease also had respiratory signs. Direct faecal smears and Baermann's tests read after one hour detected 56% and 83% of diagnosed cases respectively. The data confirm that A. vasorum is commonly associated with disease in endemic areas, which manifests with a broad range of signs at primary care level. Information on risk factors is useful in diagnosis and control, and forms a basis for further epidemiological investigation. (C) 2010 Elsevier B.V. All rights reserved.
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