当地和引入的血统驱动埃及驼中的MERS-CoV重组
Mokhtar Gomaa1, Kimberly M Edwards2,3, Ruixuan Wang2,3
1Center of Scientific Excellence for Influenza Viruses, National Research Centre, Giza, Egypt.
Journal of virology
|December 4, 2025
概括
中东呼吸综合征冠状病毒 (MERS-CoV) B类最近从阿拉伯半岛进入埃及,与当地菌株重组. 在大驼中这种基因混合会产生新的MERS-CoV变体,突出风险和加强监测的必要性.
科学领域:
- 兽医病毒学 兽医病毒学
- 动物传播疾病流行病学
- 分子流行病学分子流行病学
背景情况:
- 龙驼是中东呼吸综合征冠状病毒 (MERS-CoV) 的主要储存库.
- 甲B型MERS-CoV在阿拉伯半岛普遍存在,而甲C型在非洲驼中传播,对北非MERS-CoV的了解有限.
- 埃及MERS-CoV的遗传多样性,传播和重组潜力没有得到充分的描述.
研究的目的:
- 调查埃及龙驼和其他牲畜中的MERS-CoV发病率,血清流行率和基因组重组.
- 了解埃及境内的MERS-CoV菌群的遗传起源和相互作用.
- 评估新型MERS-CoV变种出现的可能性和动物感染的潜在影响.
主要方法:
- 在埃及的屠宰场和农场采样龙驼和同类牲畜.
- 检测MERS-CoV RNA和对MERS-CoV抗体进行血清学检测.
- 在获得的MERS-CoV基因组中进行了家族遗传学分析和重组事件的识别.
主要成果:
- 在12%屠宰的驼中检测到MERS-CoV;在其他牲畜中没有感染.
- 屠宰驼的血清流行率 (79%) 比农场驼 (12%) 高.
- 证据表明B类MERS-CoV从阿拉伯半岛引入埃及,B类和C类之间以及类内部发生重组事件.
结论:
- 新引入的MERS-CoV菌株可以与龙驼中的本地病毒重组,产生新型变种.
- 这些遗传相互作用挑战了对有限的跨区域MERS-CoV交换的假设.
- 加强监测,有针对性的控制和一个健康的方法对于减轻MERS-CoV风险至关重要.
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