关于沙门氏菌 (Salmonella enterica Serovar Infantis) 的一个健康视角,这是一个新兴的人类多抗药性病原体
Emerging infectious diseases
|March 25, 2024
概括
沙门氏菌幼虫菌株显示抗菌素耐药性 (AMR) 增加,特别是在家禽中. 全基因组分析揭示了不同的全球集群,并将家禽相关的AMR与pESI大质粒联系起来.
科学领域:
- 微生物学 微生物学
- 基因组学就是基因组学.
- 公共卫生 公共卫生
背景情况:
- 沙门氏菌 (Salmonella enterica serovar Infantis) 是一个日益严重的全球公共卫生问题,由于广泛传播.
- 这种病原体经常与高水平的抗菌素耐药性 (AMR) 相关.
研究的目的:
- 分析全球人口结构,抗菌素耐药性 (AMR) 的决定因素和沙门氏菌的等离子体形状.
- 调查遗传集群,隔离源和AMR模式之间的相关性.
主要方法:
- 全基因组测序了5,284种沙门氏菌幼虫菌株.
- 分析了1989年至2020年间在74个国家从人类,动物和食物来源中分离出来的菌株.
- 对遗传系谱,AMR基因和等离子体存在的比较分析,包括pESI大等离子体.
主要成果:
- 全球Salmonella Infantis种群分为三个不同的群体:北美,欧洲和全球.
- 根据集群和隔离源,抗菌素耐药性水平有很大差异,73%的家禽隔离物是多药耐药的,而人类隔离物是35%.
- 在71%的家禽分离物中存在pESI大质粒,但在人类分离物中只有32%,与家禽菌株中更高的AMR相关.
结论:
- 沙门氏菌 (Salmonella Infantis) 呈现出不同的全球人口结构和不同的抗菌素耐药性概况,取决于来源.
- 该pESI大血是与高AMR水平相关的关键因素在家禽相关的沙门氏菌.
- 研究结果为旨在控制这种病原体的公共卫生战略提供了关键的见解.
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