Bluetongue disease in sheep in New South Wales - April 2023.
bluetongue disease
bluetongue virus
serotype 16
sheep
Journal
Australian veterinary journal
ISSN: 1751-0813
Titre abrégé: Aust Vet J
Pays: England
ID NLM: 0370616
Informations de publication
Date de publication:
29 Sep 2023
29 Sep 2023
Historique:
received:
27
06
2023
accepted:
10
09
2023
medline:
29
9
2023
pubmed:
29
9
2023
entrez:
29
9
2023
Statut:
aheadofprint
Résumé
In 2016, bluetongue virus (BTV), serotype 16 (BTV-16), was detected in New South Wales (NSW) in sentinel cattle for the first time. Over the next 6 years, BTV-16 has been detected regularly and over an increasing area of the BTV zone in NSW. In April 2023, disease was reported in sheep on two farms on the Northern Tablelands of NSW. The consistent clinical signs included reduced exercise tolerance, facial swelling, serous nasal discharges with encrustation of the nasal plane, subcutaneous oedema of the neck and brisket and variable congestion of the coronary band. Affected sheep were mainly mature ewes and rams, with an estimated morbidity of 20% over a period of 6-8 weeks. Although there were several unexpected deaths, no veterinary examination was sought. Predominantly BTV-16 RNA was detected in sick sheep, with an incidence of infection of approximately 40% in a cross section of one flock. These events represent the first confirmation of disease due to bluetongue virus in NSW. As these cases occurred in a region with a high density of sheep, if there is ongoing transmission of BTV-16 during subsequent summers, further disease might be expected.
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Subventions
Organisme : Animal Health Australia
Organisme : NSW Department of Industry
Informations de copyright
© 2023 The Authors. Australian Veterinary Journal published by John Wiley & Sons Australia, Ltd on behalf of Australian Veterinary Association.
Références
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