肯尼亚和乌干达多个季节的B型流感病毒的流行病学动态,从序列数据推断,2010-2021年
Brenda K Nyarango1,2, D Collins Owuor3, Everlyne Isoe4
1Pathogen Epidemiology and Omics (PEO) Department, Kenya Medical Research Institute (KEMRI)-Wellcome Trust Research Programme, P.O. Box 230, Kilifi, 80108, Kenya. kiagebrenda@gmail.com.
BMC infectious diseases
|August 29, 2025
概括
肯尼亚和乌干达的B型流感病毒 (IBV) 基因组监测揭示了交替的血统占主导地位和分类周转率,当地菌株与全球模式保持一致. 这表明疫苗在东非具有潜在的有效性.
科学领域:
- 病毒学
- 流行病学
- 基因组学
背景情况:
- 甲型流感病毒 (IBV) 每年对公众健康产生重大影响.
- 在非洲,IBV的基因组监测有限,阻碍了对其流行病学的理解.
- 这项研究解决了肯尼亚和乌干达在2010年至2022年的IBV动态方面的知识差距.
研究的目的:
- 阐明肯尼亚和乌干达IBV的流行病动态.
- 分析东非IBV菌株的演化模式.
主要方法:
- 使用牛津纳米孔技术测序生成了83个近乎完整的IBV基因组.
- 综合公开的IBV数据集用于更广泛的背景.
- 分析了进化动态,包括抗原突变,重组和糖化模式.
主要成果:
- 观察到交替的IBV血统占主导地位和分类营业额,反映了全球趋势.
- 鉴定了多个B/Victoria和B/Yamagata分类/分类;2019年后没有发现B/Yamagata菌株.
- 通过血凝素 (HA) 部分的氨基酸变化发现多样化,有来自非洲和非洲以外的引入证据.
结论:
- 当地和全球IBV菌株在血统和氨基酸变化方面表现一致.
- 表明北半球和南半球用于东非的疫苗的潜在有效性.
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