Centre de Recerca en Sanitat Animal (CReSA), UAB-IRTA, Campus de la Universitat Autònoma de Barcelona, 08193 Bellaterra, Barcelona, Spain.
Prev Vet Med. 2010 Sep 1;96(3-4):263-71. doi: 10.1016/j.prevetmed.2010.06.005.
On the 25th of July 2007, bluetongue virus (BTV) serotype 1 was detected in Andalusia, southern Spain for the first time. A total of 4436 farms infected with BTV-1 were confirmed during that year: 3162 in sheep flocks, 113 in goat flocks, 7 in cattle herds and 1154 in mixed farms (sheep, goat and/or cattle in the same farm). The most common clinical signs were: fever, depression, lethargy, facial edema, and salivation (observed in more than 70% of the infected farms). Lesions in oral mucosa, lameness and dyspnea were also frequently observed. Median morbidity rate in sheep and goat flocks were 6.3% and 2.7% respectively. Median mortality rate was 2.2% in sheep flocks and 1.2% in goat flocks. Median case fatality rate was 29.8% in sheep flocks and 45% in goat flocks. Morbidity and mortality rates were not significantly higher in sheep flocks than in goat flocks (p>0.05), whereas case fatality rate was significant higher in goat flocks compared to sheep flocks (p<0.05). Neither clinical signs nor mortality were observed in cattle herds. The spatial distribution of the risk of BTV infection over Andalusia by municipality was evaluated by means of a hierarchical Bayesian model. The results evidenced that the risk was not homogeneous over the territory, being higher in the western part of the region. The likelihood of BTV infection was increased between 1.01 and 1.16 times by an increase of 10,000 domestic ruminants, and between 1.01 and 1.69 times by the presence of red deer (Cervus elaphus) in the municipality.
2007 年 7 月 25 日，西班牙南部安达卢西亚首次检测到蓝舌病病毒（BTV）血清型 1。当年共确认 4436 个感染 BTV-1 的农场：绵羊群 3162 个，山羊群 113 个，牛群 7 个，混合农场（同一农场中饲养绵羊、山羊和/或牛）1154 个。最常见的临床症状是：发热、抑郁、昏睡、面部水肿和流涎（在 70%以上感染的农场中观察到）。口腔黏膜损伤、跛行和呼吸困难也经常观察到。绵羊和山羊群的平均发病率分别为 6.3%和 2.7%。绵羊群的平均死亡率为 2.2%，山羊群为 1.2%。绵羊群的平均病死率为 29.8%，山羊群为 45%。绵羊群的发病率和死亡率并不明显高于山羊群（p>0.05），但病死率明显高于山羊群（p<0.05）。牛群未观察到临床症状或死亡。通过层次贝叶斯模型评估安达卢西亚各市镇 BTV 感染风险的空间分布。结果表明，该地区的风险分布不均匀，西部风险较高。境内每增加 10000 只反刍动物，BTV 感染的可能性增加 1.01 至 1.16 倍，每增加一个市镇存在赤鹿（Cervus elaphus），BTV 感染的可能性增加 1.01 至 1.69 倍。
