病例报告:台湾南部乳牛零星感染牛乳头状口炎病毒的病例

Huan-Yu Hsu, Yu-Ching Chuang, Wei-Yu Hsu, Chih-Wei Huang, Guan-Ming Ke
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引用次数: 0

摘要

据报道,2023 年 8 月,台湾爆发了一起在小牛嘴唇、鼻子和舌头上出现多发性糜烂丘疹和溃疡的疾病。11 头 2-4 个月大的乳牛中有 5 头患病。经采集口腔拭子、鼻腔拭子和食道咽液,并通过实时定量聚合酶链式反应检测(qPCR),所有受影响的小牛均对牛乳头状口炎病毒(BPSV)呈阳性反应。疫情爆发 1 个月后,所有阳性犊牛的 BPSV 检测结果仍为阳性,在此期间,受影响犊牛的病毒载量并未下降。为确定此次疫情毒株的遗传特征,利用 BPSV 的部分 B2L 序列进行了系统发育分析。结果显示,该病毒株与日本、美国和法国的分离株关系密切。这是自 1988 年以来首次报告在这一特定地区爆发的疫情,也是台湾首次对 BPSV 进行分子鉴定。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
CASE REPORT: A SPORADIC BOVINE PAPULAR STOMATITIS VIRUS INFECTION IN DAIRY CALVES IN SOUTH TAIWAN
An outbreak of a disease with multiple erosive papules and ulcers on the lips, noses, and tongues of calves was reported in Taiwan in August 2023. Five of 11 2–4-month-old dairy calves were affected. Oral swabs, nasal swabs, and esophageal–pharyngeal fluid were collected and tested positive for bovine papular stomatitis virus (BPSV) via quantitative real-time polymerase chain reaction assay (qPCR) for all of the affected calves. All of the positive calves remained positive for BPSV after 1 month of the outbreak, and the viral loads of the affected calves did not decrease within this period. To determine the genetic characteristics of this outbreak strain, phylogenetic analysis was performed with the partial B2L sequence of BPSV. The results revealed that the virus strain was closely related to isolates from Japan, the United States, and France. This is the first report on an outbreak in this particular region since 1988 and the first molecular characterization of BPSV in Taiwan.
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