Bluetongue in Captive Yaks

Mauroy, Axel; Guyot, Hugues; Clercq, Kris De; Cassart, Dominique; Thiry, Étienne; Saegerman, Claude

doi:10.3201/eid1404.071416

Cited by 28 publications

(24 citation statements)

References 5 publications

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“…In a survey conducted in 1996, four ruminant species (sheep, goat, buffalo, cattle) were found susceptible to BTV with the presence of vector species of Culicoides in China (Li et al 1996). The bluetongue disease in a captive yak was reported first time in 2008 in Belgium (Mauroy et al 2008) making this specie also susceptible to BTV like other ruminants. In our study, BTV antibodies were investigated in yaks, the major ruminant population in Tibetan plateau, in three different counties of Tibetan region and Hongyuan area of Sichuan Province.…”

Section: Discussionmentioning

confidence: 98%

Seroprevalence of Bluetongue virus in domestic yaks (Bos grunniens) in Tibetan regions of China based on circulating antibodies

Shahzad

et al. 2015

Trop Anim Health Prod

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The bluetongue (BT) is an infectious, non-contagious disease of ruminants with a substantial impact on income and welfare of animals. To date, scarce information about this disease in domestic yaks is available in Tibetan area of China. Seroprevalence of circulating antibodies to Bluetongue virus (BTV) in yaks from three regions of Tibet and Hongyuan area of Sichuan Province in China was investigated by a commercial competitive enzyme-linked immunosorbent assay kits. A total of 736 blood samples were collected during the year 2012 and 2013, and nearly 2% serum samples were found positive for BTV antibodies in Hongyuan area during the year 2012, and 4.89 and 3.88% of samples showed positive results for BTV in Tibetan and Hongyuan area, respectively, in 2013. The results indicated the occurrence of BT infection in Chinese yaks for the first time in Tibet and Hongyuan area of Sichuan Province with the presence of BTV antibodies in these ruminants.

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Section: Discussionmentioning

confidence: 98%

Seroprevalence of Bluetongue virus in domestic yaks (Bos grunniens) in Tibetan regions of China based on circulating antibodies

Shahzad

et al. 2015

Trop Anim Health Prod

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“…Cattle and other ruminants may have ocular discharge, conjunctivitis, oral mucosal congestion, ulceration of muzzle, and teats (reviewed in Maclachlan, 2009) (Maclachlan et al, 2009). Previous studies showed that ruminants of African origin are apparently resistant to the infection (Fernandez-Pacheco et al, 2008;Mauroy et al, 2008). This resistance to BTV might explain why the disease was never described in Madagascar.…”

Section: Introductionmentioning

confidence: 99%

Detection in and circulation of Bluetongue virus among domestic ruminants in Madagascar

Andriamandimby

Viarouge²,

Ravalohery

et al. 2015

Veterinary Microbiology

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So far, no published data was available concerning the circulation of Bluetongue virus (BTV) in Madagascar. During a survey on Rift Valley Fever, we were able to detect a virus belonging to BTV. Therefore, we conducted a study aiming at characterizing molecularly the BTV isolated and assess the importance of circulation of BTV in Madagascar. A total of 4393 sera from ruminants selected randomly by stratification and sampled in 30 districts of Madagascar were tested for BTV. Moreover, 175 cattle were followed during 11 months. Phylogenetic analyses were performed from virus isolated from unfed pools of mosquitoes. Overall, the estimated mean seroprevalence of infection at the national level was 95.9% (95% CI: [95.2-96.5]) in cattle and 83.7% (95% CI: [81.4-85.9]) in small ruminants. Estimation of incidence rate was 54 per 100 cattle-years assuming that the incidence rate is constant all year along. Phylogenetic analyses revealed that BTV detected belong to serotype 2. In conclusion, our results showed that BTV is endemic in Madagascar and highly prevalent among cattle. In our study we did not work on the vector involved in transmission of BTV in cattle. Thus, research should be conducted to better describe epidemiology of BTV in Madagascar including vectors and assess economic impact of the disease associated to BTV infections.

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“…Cattle, sheep, goats, wild ruminants, SAC, exotic herbivores, and carnivores are susceptible to BTV infection. 4,7,9,11,19,20,[22][23][24][25] To date, death attributable to BTV infection in SAC has been reported in 1 alpaca and 2 llamas only. 19,20 Previous reports have shown that SAC can be infected with BTV and produce antibodies.…”

Section: Discussionmentioning

confidence: 99%

Serological Survey of Bluetongue Virus Serotype-8 Infection in South American Camelids in Switzerland (2007-2008)

Zanolari

Chaignat²,

Kaufmann³

et al. 2010

Journal of Veterinary Internal Medicine

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Background: Outbreak of bluetongue virus serotype-8 (BTV-8) infection in domestic ruminants in Northern Europe. Objective: To investigate the South American camelids' (SAC) susceptibility to BTV-8 infection, their role in the epidemiology of the disease, and the use of currently available serological screening tests in SAC in an endemic region.Animals: Three hundred and fifty-four unvaccinated and 27 vaccinated SAC (170 llamas, 201 alpacas), ranging in age from 1 month to 17 years between June and August 2008. The SAC originated from 44 herds throughout the country, representing 10% of the Swiss SAC population.Methods: Prospective, observational study of a convenience sample of SAC. Serum samples were analyzed with 2 serological screening tests. When results diverged, a 3rd ELISA was carried out for confirmation (ID Screen Bluetongue Competition ELISA kit).Results: All sera from the 354 unvaccinated animals were negative in the endemic region. Reliable seroconversion was observed after administration of 2 doses of vaccine.Conclusions and Clinical Importance: This study suggests a low susceptibility of SAC to BTV-8 despite the presence of the virus in the cattle and small ruminant population, indicating that SAC do not play a major role in the epidemiology of BTV-8. Furthermore, these results indicate that commercially available serological tests for BTV-8 can be used in SAC.

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Bluetongue in Captive Yaks

Cited by 28 publications

References 5 publications

Seroprevalence of Bluetongue virus in domestic yaks (Bos grunniens) in Tibetan regions of China based on circulating antibodies

Seroprevalence of Bluetongue virus in domestic yaks (Bos grunniens) in Tibetan regions of China based on circulating antibodies

Detection in and circulation of Bluetongue virus among domestic ruminants in Madagascar

Serological Survey of Bluetongue Virus Serotype-8 Infection in South American Camelids in Switzerland (2007-2008)

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