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<p>The emergence of <i>Rocahepevirus ratti</i> genotype 1 (rat hepatitis E virus; rat HEV) in humans presents an unprecedented threat; however, the risk of rat HEV transmission to humans is not well understood. Here, we report the “Distinguishing Antibody Response Elicitation (DARE)” method, which distinguishes exposure to rat HEV. We use four study sets from China for large-scale population analysis: set 1 (hospital visit) and set 3 (ALT abnormality) from Yunnan province, a biodiversity hotspot, and set 2 (received physical examination) and set 4 (ALT abnormality) from Jiangsu province, a non-hotspot control region. rat HEV exposure risk is significantly higher in Yunnan, with 21.97% (190 of 865) in set 1 and 13.97% (70 of 501) in set 3, compared to 0.75% (9 of 1196) in Jiangsu’s set 2. Six spillover infections for rat HEV are identified in set 1, with one case of abnormal ALT. The rat-1d strains carried by rats are closely related to those human infections. Our study reveals the substantial spillover burden posed by rat HEV in biodiversity hotspots and highlights the utility of DARE method for proactive surveillance of public health emergencies.</p>

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Substantial spillover burden of rat hepatitis E virus in humans

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年4月29日

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  • Zihao Chen,
  • Lifeng Wang,
  • Yongde Zhang,
  • Guanghui Li,
  • Jiaxiang Yin,
  • Jingyan Fan,
  • Tianxu Liu,
  • Han Wu,
  • Yue Huang,
  • Wenhui Huang,
  • Donglin Liu,
  • Xiaoxiang Zheng,
  • Xia Zang,
  • Xingcheng Huang,
  • Liuwei Song,
  • Shunhua Wen,
  • Jiayu Li,
  • Dong Ying,
  • Mujin Fang,
  • Yingbin Wang,
  • Ting Wu,
  • Siddharth Sridhar,
  • Jun Zhang,
  • Ningshao Xia,
  • Lin Wang,
  • Yihan Lu,
  • Zizheng Zheng

摘要

The emergence of Rocahepevirus ratti genotype 1 (rat hepatitis E virus; rat HEV) in humans presents an unprecedented threat; however, the risk of rat HEV transmission to humans is not well understood. Here, we report the “Distinguishing Antibody Response Elicitation (DARE)” method, which distinguishes exposure to rat HEV. We use four study sets from China for large-scale population analysis: set 1 (hospital visit) and set 3 (ALT abnormality) from Yunnan province, a biodiversity hotspot, and set 2 (received physical examination) and set 4 (ALT abnormality) from Jiangsu province, a non-hotspot control region. rat HEV exposure risk is significantly higher in Yunnan, with 21.97% (190 of 865) in set 1 and 13.97% (70 of 501) in set 3, compared to 0.75% (9 of 1196) in Jiangsu’s set 2. Six spillover infections for rat HEV are identified in set 1, with one case of abnormal ALT. The rat-1d strains carried by rats are closely related to those human infections. Our study reveals the substantial spillover burden posed by rat HEV in biodiversity hotspots and highlights the utility of DARE method for proactive surveillance of public health emergencies.