Department of Theriogenology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran.
Private Veterinary Practitioner, Tehran, Iran.
Vet Med Sci. 2023 Nov;9(6):2791-2795. doi: 10.1002/vms3.1288. Epub 2023 Sep 30.
Bluetongue virus (BTV) is an arthropodborne Orbivirus that belongs to the Reoviridae family. Bluetongue is one of the most important diseases of sheep. A flock of 300 Lacon sheep just arrived from France, located in the countryside of Qazvin city, Iran, was examined, in August 2022. In history taking and clinical examination, submandibular oedema (216/300, 72%), fever (216/300, 72%), inappetence (216/300, 72%), stomatitis (216/300, 72%), nasal discharge (90/300, 30%) and lameness (30/300, 10%) were recorded. Foot-and-mouth disease, bluetongue (BT), contagious ecthyma and peste des petits ruminants were the most important differential diagnosis with reference to clinical signs. Tongue scraping samples from four clinically affected sheep were sent to the laboratory for PCR tests and, in all of them, BTV was detected. The affected flock had a history of vaccination with an attenuated live vaccine in the previous 4 months. The morbidity rate, mortality rate and case fatality rate were 72% (216/300), 7% (21/300) and 9.7% (21/216), respectively. This report is the first documented clinical form of BT in sheep from Iran.
蓝舌病病毒（BTV）是一种节肢动物传播的呼肠孤病毒，属于呼肠孤病毒科。蓝舌病是绵羊最重要的疾病之一。2022 年 8 月，对来自法国的一群 300 只拉康绵羊进行了检查，这些绵羊位于伊朗卡兹温市的农村。在病史询问和临床检查中，记录到以下症状：下颌水肿（216/300，72%）、发热（216/300，72%）、食欲不振（216/300，72%）、口炎（216/300，72%）、鼻腔分泌物（90/300，30%）和跛行（30/300，10%）。根据临床症状，口蹄疫、蓝舌病（BT）、传染性脓疱性皮炎和小反刍兽疫是最重要的鉴别诊断。从 4 只临床受影响的绵羊身上采集舌刮样标本送往实验室进行 PCR 检测，结果均检测到 BTV。受影响的羊群在过去 4 个月内曾接种过减毒活疫苗。发病率、死亡率和病死率分别为 72%（216/300）、7%（21/300）和 9.7%（21/216）。这是伊朗首次有记录的绵羊蓝舌病临床病例。
