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Factors Affecting the Risk of Infection01:26

Factors Affecting the Risk of Infection

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The hosts' susceptibility to infection depends on several factors. The integrity of the skin and mucous membranes helps protect the body against microbial attacks. When the skin is altered, the chance of infection, limb loss, and even death increases.
The integrity and count of the white blood cells help the body resist pathogens and fight infection. When impaired, it reduces the body's resistance to pathogens. The acidic pH levels of the gastrointestinal, genitourinary tracts, and skin...
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在急性感染期间的肠道微生物群签名预测了长期的COVID.

Isin Y Comba, Ruben A T Mars, Lu Yang

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    |December 23, 2024
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    在急性SARS-CoV-2感染期间肠道微生物组的组成可以预测长期COVID (LC) 的发展. 在早期感染时,独特的微生物组概况准确地识别了患LC风险的个体,单独超过了临床因素.

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    科学领域:

    • 微生物学 微生物学
    • 免疫学 免疫学 免疫学
    • 传染性疾病 传染性疾病

    背景情况:

    • 长期COVID (LC) 影响了SARS-CoV-2后的非住院个体的10-30%,导致显著的发病率.
    • 由于疾病异质性,肠道微生物群在预测急性感染后LC发展中的作用仍然不清楚.

    研究的目的:

    • 调查肠道微生物组组成在急性SARS-CoV-2感染期间对长期COVID发展的预测价值.
    • 为了比较微生物组数据的预测准确度与LC风险的临床变量.

    主要方法:

    • 799名门诊患者的长度研究 (380名SARS-CoV-2阳性,419名阴性).
    • 在急性感染 (0-1个月) 和感染后阶段 (1-2个月) 的肠道微生物组合的分析.
    • 机器学习模型用于评估微生物组和LC临床数据的预测准确性.

    主要成果:

    • 与对照人群相比,患有LC的个体在急性感染期间具有不同的肠道微生物组合.
    • 微生物组合本身是LC的更准确的预测因素,而不是临床变量.
    • 在研究组之间,微生物组组成的时间变化没有显著差异.
    • 确定了四个LC症状集群,其中胃肠道和仅疲劳的组显示出与微生物组变化最强的联系.

    结论:

    • 在急性SARS-CoV-2感染期间,肠道微生物组概况是长期COVID发展的有价值预测因素.
    • 微生物组分析为识别长期COVID风险的个体提供了一个有希望的工具.
    • 在LC中,特定的症状集群与明显的肠道微生物组改变有关.