在埃塞俄比亚,Streptococcus pneumoniae孤立的分子流行病学导致侵入性和非侵入性感染
Bekele Sharew1, Feleke Moges2, Gizachew Yismaw3
1Department of Medical Laboratory Sciences, College of Health Sciences, Debre Tabor University, Debre Tabor, Ethiopia. bsharew@gmail.com.
Scientific reports
|September 13, 2024
概括
埃塞俄比亚显示了多种新型序列类型 (ST) 和血清型的多样化肺炎菌株,突显了持续基因监测的必要性. 这种遗传多样性可能会影响疫苗对肺炎球菌疾病的有效性.
科学领域:
- 微生物学 微生物学
- 流行病学 流行病学
- 基因组学就是基因组学.
背景情况:
- 肺炎链球菌 (Streptococcus pneumoniae) 导致全球严重的侵袭性和非侵袭性疾病的发病率和死亡率.
- 了解S. pneumoniae分子流行病学对于公共卫生干预至关重要.
研究的目的:
- 确定导致埃塞俄比亚侵袭性和非侵袭性感染的Streptococcus pneumoniae菌株的分子流行病学.
- 识别血清型,序列类型 (ST) 和抗菌素耐药性模式.
主要方法:
- 在两个埃塞俄比亚地区医院进行的前性研究 (2018年1月 - 2019年12月).
- 54个S. pneumoniae分离物的全基因组测序.
- 血清型和多部位序列类型 (MLST) 从基因组数据推导.
- 使用E-test进行抗微生物敏感性测试.
主要成果:
- 确定了32种血清型和42种序列类型 (ST),包括21种新型ST.
- 常见的侵入性ST包括ST3500,ST5368和ST11162,与各种血清型相关.
- 血清型14显示对青素G的耐药性;血清型3,8,7C和10A对红红素的耐药性;和血清型6A对两者的耐药性.
结论:
- 埃塞俄比亚表现出S. pneumoniae血清型和ST的高度多样性,有大量的新型ST.
- 这种遗传多样性,包括潜在的囊切换,可能会影响当前免疫策略的有效性.
- 持续的遗传监测对于为未来的疫苗开发和疾病控制工作提供信息至关重要.
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