解HP-PRRSV亚系8.7的线条引入,持久性和传输驱动器
Yankuo Sun1,2,3,4, Jiabao Xing1, Samuel L Hong5
1Key Laboratory of Zoonosis Prevention and Control of Guangdong Province, College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China.
Nature communications
|October 13, 2024
概括
猪生殖和呼吸系统综合征病毒 (PRRSV) 在中国的演变是复杂的,由重组和人类活动驱动. 广东是关键的枢纽,改性活疫苗 (MLVs) 可能有一个"泄漏"时期.
科学领域:
- 兽医病毒学 兽医病毒学
- 分子流行病学分子流行病学
- 猪病的动态 猪病的动态
背景情况:
- 猪生殖和呼吸系统综合征病毒 (PRRSV) 亚系8.7已经迅速扩大,但它的进化模式和分散因素仍然不太清楚.
- 长期国家监测数据为调查中国PRRSV演变提供了基础.
研究的目的:
- 在中国分析PRRSV亚系8.7的进化,重组和原始地理模式.
- 确定影响PRRSV传播的因素,包括人类活动和猪产业的分布.
- 研究可用的改性活疫苗 (MLVs) 的基因组特征和潜在的"泄漏"时期.
主要方法:
- 来自20年国家监测项目的PRRSV亚系8.7的基因组测序和分析.
- 独立的跨系和内系复合分析.
- 贝叶斯族族地理分析以推断空间传播和识别感染中心.
- 基因组测序和对可用的改性活疫苗 (MLVs) 的分析.
主要成果:
- 在整个研究期间观察到异质重组模式.
- 广东成为亚洲的重要感染枢纽.
- PRRSV的空间传播与人类活动和猪业的分布密切相关,受传统养殖系统的影响.
- 在2011-2017年期间,确定了高致病性PRRSV (HP-PRRS) MLVs的潜在"泄漏"时期,与特定的氨基酸突变相关.
结论:
- 这项研究提供了对中国PRRSV演变和传播动态的全面了解.
- 调查结果强调了广东作为一个关键枢纽的作用,以及社会经济因素对病毒传播的影响.
- 鉴定到的"漏洞"时期和MLVs相关突变为未来的疫苗开发和疾病控制策略提供了关键的见解.
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