Calves Previously Immunized with Bluetongue Virus
نویسندگان
چکیده
* Corresponding author 20 Email addresses: 21 Ludovic Martinelle : [email protected] 22 Fabiana Dal Pozzo : [email protected] 23 Pierre Sarradin: [email protected] 24 Willem Van Campe : willem.vancampe@coda-cerva 25 Ilse De Leeuw: [email protected] 26 Kris De Clercq : [email protected] 27 Christine Thys : [email protected] 28 Etienne Thiry : [email protected] 29 Claude Saegerman : [email protected] 30 31
منابع مشابه
Colostral antibody induced interference of inactivated bluetongue serotype-8 vaccines in calves
Since its introduction into northern Europe in 2006, bluetongue has become a major threat to animal health. While the efficacy of commercial vaccines has been clearly demonstrated in livestock, little is known regarding the effect of maternal immunity on vaccinal efficacy. Here, we have investigated the duration and amplitude of colostral antibody-induced immunity in calves born to dams vaccina...
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The effect of a superinfection with bluetongue virus serotype 1 (BTV1) was evaluated on two groups of four calves. One group received a commercial inactivated BTV serotype 8 (BTV8) vaccine. This group and the non-vaccinated group of calves were challenged twice (4 months apart) with the European BTV8 strain isolated during the 2006-2007 epidemics. Calves were then infected with a BTV1 inoculum ...
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A modified passive cutaneous anaphylaxis test and an ELISA were used to identify IgE in calves vaccinated (sensitized) with chlorine dioxide-inactivated bluetongue virus (BTV) and in calves inoculated with infectious BTV. The levels of IgE were greatest in the vaccinated calves after challenge with infectious virus, which correlated with development of clinically apparent dermatitis and stomati...
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The presence of bluetongue virus (BTV) and Epizootic Haemorrhagic Disease virus (EHDV) in indigenous calves in western Kenya was investigated. Serum was analysed for BTV and EHDV antibodies. The population seroprevalences for BTV and EHDV for calves at 51 weeks of age were estimated to be 0.942 (95% CI 0.902-0.970) and 0.637 (95% CI 0.562-0.710), respectively, indicating high levels of circulat...
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To determine whether transplacental transmission could explain overwintering of bluetongue virus in the United Kingdom, we studied calves born to dams naturally infected during pregnancy in 2007-08. Approximately 33% were infected transplacentally; some had compromised health. In all infected calves, viral load decreased after birth; no evidence of persistent infection was found.
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