在春假旅行和传播缓解策略后,SARS-CoV-2变种的引入
Justin M Napolitano1,2, Sujata Srikanth1, Rooksana E Noorai3
1Clemson University, Research and Education in Disease Diagnostics and Intervention Clemson, Clemson, South Carolina, United States of America.
PloS one
|May 9, 2024
概括
大学春假增加了SARS-CoV-2变种的传播. 重复测试和监测是减轻传播和保持面对面教育的关键.
科学领域:
- 病毒学 病毒学
- 流行病学 流行病学
- 公共卫生 公共卫生
背景情况:
- 大学春假为SARS-CoV-2变种传播带来了双重风险.
- 变种可以从大学传播到突破目的地,反之亦然,影响社区.
研究的目的:
- 分析SARS-CoV-2变种在大学春假之前和之后的传播模式.
- 评估监测和测试策略在缓解传播方面的有效性.
主要方法:
- 155个样本的全基因组测序在四个时间段进行 (春季休息前/后2021/2022).
- 将clades分配给测序样本,并与超过5万个阳性和测试数据点进行配对.
- 分析社交媒体数据以了解旅行模式及其对变种传播的影响.
主要成果:
- 在2021年,变种多样性从4个增加到9个,其中阿尔法变得占主导地位 (22.2%至56.4%).
- 在2022年,变种多样性从2个增加到3个 (Omicron子系),尽管缓解程度较轻,但阳性增加更高.
- 遗传学分析揭示了与远距离相关的子系的出现.
结论:
- 重复测试在减轻SARS-CoV-2传播和支持面对面教育方面发挥着至关重要的作用.
- 春季假期旅行引入了多样化,与远距离相关的血统,不论主导的变异.
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