Results 21 to 30 of about 2,017 (204)

Demonstration of coinfection with and recombination by caprine arthritis-encephalitis virus and maedi-visna virus in naturally infected goats. [PDF]

open access: yesJ Virol, 2007
Recombination of different strains and subtypes is a hallmark of lentivirus infections, particularly for human immunodeficiency virus, and contributes significantly to viral diversity and evolution both within individual hosts and within populations ...
Pisoni G   +4 more
europepmc   +2 more sources

Failure to detect Schmallenberg virus RNA in ram semen in the UK (2016–2018)

open access: yesVeterinary Record Open, Volume 9, Issue 1, December 2022., 2022
Abstract Background Schmallenberg virus (SBV) is a midge‐borne arbovirus that first emerged in the European ruminant population in 2011 and has since settled to an endemic pattern of disease outbreaks on an approximately 4‐year cycle when herd immunity from the previous circulation drops to a point allowing renewed widescale virus circulation.
Alice Curwen   +8 more
wiley   +1 more source

To scan or not to scan? Efficacy of transthoracic ultrasonography for ovine pulmonary adenocarcinoma screening in a large commercial UK sheep flock

open access: yesVeterinary Record, Volume 191, Issue 3, 6/13 August 2022., 2022
Abstract Background Transthoracic ultrasonography (TTUS) is currently the only widely used method to diagnose preclinical or subclinical ovine pulmonary adenocarcinoma (OPA) in the live sheep. However, little is known about the test characteristics of TTUS.
Peers Davies   +5 more
wiley   +1 more source

Association of Ovar‐DRB1 alleles with innate immune responses in sheep

open access: yesVeterinary Medicine and Science, Volume 8, Issue 2, Page 752-757, March 2022., 2022
Results of this study provided additional support for the association between Ovar‐DRB1 alleles and regulation of immune responses in sheep population. Description of MHC polymorphism and its role in the controlling of immune responses will increase our understanding of host‐pathogen interactions, and ultimately facilitate the selection of disease ...
Atefeh Esmailnejad   +3 more
wiley   +1 more source

A novel enterovirus in lambs with poliomyelitis and brain stem encephalitis

open access: yesTransboundary and Emerging Diseases, Volume 69, Issue 2, Page 227-234, March 2022., 2022
Abstract An Austrian organic dairy sheep farm experienced cases of recumbency and sudden deaths in 3‐ to 4‐week‐old lambs. Two animals were subjected to thorough clinical and pathological investigations. Pathohistological analysis identified severe nonsuppurative myelitis and mild nonsuppurative encephalitis.
Herbert Weissenböck   +8 more
wiley   +1 more source

Visna in a UK flock and the biosecurity risk arising from the onward sale of likely infected pedigree stock

open access: yesVeterinary Record Case Reports, Volume 9, Issue 3, September 2021., 2021
Abstract Small ruminant lentivirus infections in sheep most commonly present with respiratory signs (maedi) and indurative mastitis, while primary neurological signs (visna) have rarely been reported in Great Britain (GB). Most reports of visna describe signs referable to myelitis, although central signs associated with encephalitis may feature.
Mike Evans   +5 more
wiley   +1 more source

Pestivirus apparent prevalence in sheep and goats in Northern Ireland: A serological survey

open access: yesVeterinary Record, Volume 188, Issue 1, January 2021., 2021
Abstract Background: Bovine viral diarrhoea virus (BVDV) and border disease virus (BDV) can cause significant health problems in ruminants and economic impacts for farmers. The aim of this study was to evaluate pestivirus exposure in Northern Ireland sheep and goat flocks, and to compare findings with a previous study from the region. Methods: Up to 20
Emma Campbell   +10 more
wiley   +1 more source

Duplicated sequence motif in the long terminal repeat of maedi-visna virus extends cell tropism and is associated with neurovirulence. [PDF]

open access: yesJ Virol, 2007
Maedi-visna virus (MW) is a lentivirus of sheep causing chronic inflammatory disease of the lungs (maedi) and the nervous system (visna). We have previously shown that a duplicated sequence in the long terminal repeat (LTR) of MVV is a determinant of ...
Oskarsson T   +9 more
europepmc   +3 more sources

Genetic evaluation of small ruminant lentivirus susceptibility in Valais blacknose sheep

open access: yes, 2021
Animal Genetics, Volume 52, Issue 5, Page 781-782, October 2021.
Anna Letko   +5 more
wiley   +1 more source

PREVALENCE OF MAEDI-VISNA IN SHEEP HERDS

open access: yesArchives of Veterinary Medicine, 2008
Progressive sheep pheumonia and maedi are terms that denote chronic virus sheep disease. Maedi-visna virus causes a disease named visna, which is a disease of nervous system with the symptoms of paresis and paralyses.
Branka Vidić   +4 more
doaj   +1 more source

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