Risk-based surveillance for bluetongue virus in cattle on the south coast of England in 2017 and 2018.
bluetongue
cattle
epidemiology
ruminants
surveys
Journal
The Veterinary record
ISSN: 2042-7670
Titre abrégé: Vet Rec
Pays: England
ID NLM: 0031164
Informations de publication
Date de publication:
28 Nov 2020
28 Nov 2020
Historique:
received:
04
05
2020
revised:
01
07
2020
accepted:
13
07
2020
pubmed:
13
9
2020
medline:
27
5
2021
entrez:
12
9
2020
Statut:
ppublish
Résumé
Bluetongue (BT) is a viral disease of ruminants and camelids which can have a significant impact on animal health and welfare and cause severe economic loss. The UK has been officially free of bluetongue virus (BTV) since 2011. In 2015, BTV-8 re-emerged in France and since then BTV has been spreading throughout Europe. In response to this outbreak, risk-based active surveillance was carried out at the end of the vector seasons in 2017 and 2018 to assess the risk of incursion of BTV into Great Britain. Atmospheric dispersion modelling identified counties on the south coast of England at higher risk of an incursion. Blood samples were collected from cattle in five counties based on a sample size designed to detect at least one positive if the prevalence was 5 per cent or greater, with 95 per cent confidence. No virus was detected in the 478 samples collected from 32 farms at the end of the 2017 vector season or in the 646 samples collected from 43 farms at the end of the 2018 vector season, when tested by RT-qPCR. The negative results from this risk-based survey provided evidence to support the continuation of the UK's official BTV-free status.
Sections du résumé
BACKGROUND
BACKGROUND
Bluetongue (BT) is a viral disease of ruminants and camelids which can have a significant impact on animal health and welfare and cause severe economic loss. The UK has been officially free of bluetongue virus (BTV) since 2011. In 2015, BTV-8 re-emerged in France and since then BTV has been spreading throughout Europe. In response to this outbreak, risk-based active surveillance was carried out at the end of the vector seasons in 2017 and 2018 to assess the risk of incursion of BTV into Great Britain.
METHOD
METHODS
Atmospheric dispersion modelling identified counties on the south coast of England at higher risk of an incursion. Blood samples were collected from cattle in five counties based on a sample size designed to detect at least one positive if the prevalence was 5 per cent or greater, with 95 per cent confidence.
RESULTS
RESULTS
No virus was detected in the 478 samples collected from 32 farms at the end of the 2017 vector season or in the 646 samples collected from 43 farms at the end of the 2018 vector season, when tested by RT-qPCR.
CONCLUSION
CONCLUSIONS
The negative results from this risk-based survey provided evidence to support the continuation of the UK's official BTV-free status.
Identifiants
pubmed: 32917835
pii: vr.106016
doi: 10.1136/vr.106016
pmc: PMC7786256
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
e96Subventions
Organisme : Biotechnology and Biological Sciences Research Council
ID : BBS/E/I/00007033
Pays : United Kingdom
Organisme : Biotechnology and Biological Sciences Research Council
ID : BBS/E/I/00007036
Pays : United Kingdom
Organisme : Biotechnology and Biological Sciences Research Council
ID : BBS/E/I/00007037
Pays : United Kingdom
Organisme : Biotechnology and Biological Sciences Research Council
ID : BBS/E/I/00007038
Pays : United Kingdom
Informations de copyright
© British Veterinary Association 2020. Re-use permitted under CC BY-NC. No commercial re-use. Published by BMJ.
Déclaration de conflit d'intérêts
Competing interests: None declared.
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