Disease suspected to be caused by Ross River virus infection of horses

Ross River Virus (RRV) was believed to be the cause of acute illness in four horses around the Bellarine peninsula in south‐west Victoria, Australia. The horses presented with clinical signs including petechial haemorrhages, lymphadenopathy, distal limb swelling and reluctance to move. Fibrinogen wa...

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Bibliographic Details
Published in:Australian veterinary journal 2008-09, Vol.86 (9), p.367-370
Main Authors: El-Hage, C.M, McCluskey, M.J, Azuolas, J.K
Format: Article
Language:English
Subjects:
acute course
Aedes
Aedes camptorhynchus
Alphavirus Infections - epidemiology
Alphavirus Infections - veterinary
Alphavirus Infections - virology
Animals
Antibodies, Viral - blood
case studies
Culicidae - virology
disease diagnosis
disease outbreaks
Disease Outbreaks - veterinary
Female
Gait Ataxia - epidemiology
Gait Ataxia - veterinary
Gait Ataxia - virology
horse diseases
Horse Diseases - epidemiology
Horse Diseases - virology
Horses
insect vectors
Insect Vectors - virology
Male
Ross River virus
Ross River virus - immunology
Ross River virus - isolation & purification
Ross River virus - pathogenicity
seroconversion
serodiagnosis
signs and symptoms (animals and humans)
Victoria - epidemiology
viral diseases of animals and humans
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Summary:Ross River Virus (RRV) was believed to be the cause of acute illness in four horses around the Bellarine peninsula in south‐west Victoria, Australia. The horses presented with clinical signs including petechial haemorrhages, lymphadenopathy, distal limb swelling and reluctance to move. Fibrinogen was also elevated in three of the four horses. Whilst no virus was isolated, serological testing revealed elevated RRV IgM titres in all horses indicating acute infection. The outbreak occurred at a time when a known RRV vector, the mosquito Aedes camptorhynchus was recorded at very high levels in the region. This report is one of very few to attribute specific signs of disease to RRV in horses in conjunction with serological evidence of infection.
ISSN:0005-0423
1751-0813
DOI:10.1111/j.1751-0813.2008.00339.x