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Bluetongue in captive yaks.

Mauroy A, Guyot H, De Clercq K, Cassart D, Thiry E, Saegerman C - Emerging Infect. Dis. (2008)

View Article: PubMed Central - PubMed

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In August 2006, several northern European countries including Belgium reported cases of bluetongue (BT)... Yaks living in captivity in a Belgian animal park showed clinical signs of BT... A clinical examination performed on 1 yak showed loss of weight associated with a progressive weakness linked to anorexia, ulcerative and necrotic lesions on the muzzle with some crusts and mucopurulent nasal discharge, and udder erythema with papules and crusts... Necropsies were performed on carcasses of this and another yak... The main lesions found were severe diffuse congestion of the lungs with edema and emphysema, acute hemorrhagic enteritis restricted to the ileum and jejunum, and petechial hemorrhages on the abomasums... A real-time reverse transcription quantitative–PCR (RT-qPCR) targeting BTV segment 5 (RT-qPCR_S5) was used to detect BTV RNA in tissues samples... The specificity of the RT-qPCR used had been previously tested against prototype strains of genetically related viruses (9 strains of epizootic hemorrhagic disease virus and 9 strains of African horse sickness virus)... The RT-qPCR tests confirmed BTV viremia... The yak species in its natural biotope is usually rarely exposed to competent Culicoides vectors... Antibodies against BTV have been found in many wild ruminants, and our results extend the number of ruminant species susceptible to BTV... Some wild ruminant species in captivity could also play this role in European countries affected by the recent BT outbreak... Moreover, the source of BTV-8 in the northern European outbreak remains unclear, and the role of wild ruminant species has to be taken into account... In the future, European authorities should consider vaccination to prevent the spread of the disease in European member states.

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A captive yak infected with bluetongue virus. Tongue is swollen, cyanotic, and protruding from the mouth.
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Figure 1: A captive yak infected with bluetongue virus. Tongue is swollen, cyanotic, and protruding from the mouth.

Mentions: Yaks living in captivity in a Belgian animal park showed clinical signs of BT. A clinical examination performed on 1 yak showed loss of weight associated with a progressive weakness linked to anorexia, ulcerative and necrotic lesions on the muzzle with some crusts and mucopurulent nasal discharge, and udder erythema with papules and crusts. The tongue was severely swollen and cyanotic and protruded from the mouth (Figure). The animal was reluctant to move and was recumbent (possibly as a consequence of podal lesions linked to BT); it died 7 days after examination. Necropsies were performed on carcasses of this and another yak. The main lesions found were severe diffuse congestion of the lungs with edema and emphysema, acute hemorrhagic enteritis restricted to the ileum and jejunum, and petechial hemorrhages on the abomasums. No lesions characteristic of coronitis were noted.


Bluetongue in captive yaks.

Mauroy A, Guyot H, De Clercq K, Cassart D, Thiry E, Saegerman C - Emerging Infect. Dis. (2008)

A captive yak infected with bluetongue virus. Tongue is swollen, cyanotic, and protruding from the mouth.
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC2570917&req=5

Figure 1: A captive yak infected with bluetongue virus. Tongue is swollen, cyanotic, and protruding from the mouth.
Mentions: Yaks living in captivity in a Belgian animal park showed clinical signs of BT. A clinical examination performed on 1 yak showed loss of weight associated with a progressive weakness linked to anorexia, ulcerative and necrotic lesions on the muzzle with some crusts and mucopurulent nasal discharge, and udder erythema with papules and crusts. The tongue was severely swollen and cyanotic and protruded from the mouth (Figure). The animal was reluctant to move and was recumbent (possibly as a consequence of podal lesions linked to BT); it died 7 days after examination. Necropsies were performed on carcasses of this and another yak. The main lesions found were severe diffuse congestion of the lungs with edema and emphysema, acute hemorrhagic enteritis restricted to the ileum and jejunum, and petechial hemorrhages on the abomasums. No lesions characteristic of coronitis were noted.

View Article: PubMed Central - PubMed

AUTOMATICALLY GENERATED EXCERPT
Please rate it.

In August 2006, several northern European countries including Belgium reported cases of bluetongue (BT)... Yaks living in captivity in a Belgian animal park showed clinical signs of BT... A clinical examination performed on 1 yak showed loss of weight associated with a progressive weakness linked to anorexia, ulcerative and necrotic lesions on the muzzle with some crusts and mucopurulent nasal discharge, and udder erythema with papules and crusts... Necropsies were performed on carcasses of this and another yak... The main lesions found were severe diffuse congestion of the lungs with edema and emphysema, acute hemorrhagic enteritis restricted to the ileum and jejunum, and petechial hemorrhages on the abomasums... A real-time reverse transcription quantitative–PCR (RT-qPCR) targeting BTV segment 5 (RT-qPCR_S5) was used to detect BTV RNA in tissues samples... The specificity of the RT-qPCR used had been previously tested against prototype strains of genetically related viruses (9 strains of epizootic hemorrhagic disease virus and 9 strains of African horse sickness virus)... The RT-qPCR tests confirmed BTV viremia... The yak species in its natural biotope is usually rarely exposed to competent Culicoides vectors... Antibodies against BTV have been found in many wild ruminants, and our results extend the number of ruminant species susceptible to BTV... Some wild ruminant species in captivity could also play this role in European countries affected by the recent BT outbreak... Moreover, the source of BTV-8 in the northern European outbreak remains unclear, and the role of wild ruminant species has to be taken into account... In the future, European authorities should consider vaccination to prevent the spread of the disease in European member states.

Show MeSH
Related in: MedlinePlus