Life sciences · Journal article
Virology Journal · July 30, 2026
Early or partial results. Treat as a signal, not a conclusion.
This is a descriptive prevalence survey documenting HEV infection in farmed fur-bearing animals in a single Chinese province, with molecular identification of genotype 4 isolates, including a potentially novel variant. The work provides epidemiological baseline data and phylogenetic insight into HEV circulation in this animal reservoir but does not establish zoonotic risk or clinical implications for human health.
Cross-sectional descriptive survey with molecular characterization and phylogenetic analysis. Farmed fur-bearing animals (raccoon dogs, mink, and foxes) in Hebei Province, China. Samples comprised liver and fecal tissues from fur farms.. Intervention: None; observational detection of HEV RNA via RT-qPCR and molecular characterization.. n = 272. Hebei Province, China.
Overall HEV RNA positivity: 43/272 samples (15.81%) Raccoon dog infection rate: 19.35% (36/186) Mink infection rate: 8.64% (7/81)
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This descriptive survey documents animal-level HEV prevalence and identifies potential novel genotype variants in a farmed animal reservoir. Clinicians and public health professionals should note that this establishes animal circulation but does not quantify human zoonotic risk; further investigation of transmission pathways and occupational exposure is needed before clinical recommendations can be informed.
A descriptive epidemiological survey with molecular characterization of HEV in farmed animals, providing prevalence data and phylogenetic findings but lacking analytical comparators, clinical outcomes, or evidence of zoonotic transmission to humans.
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Quoted from the source exactly as published.
This descriptive survey documents animal-level HEV prevalence and identifies potential novel genotype variants in a farmed animal reservoir. Clinicians and public health professionals should note that this establishes animal circulation but does not quantify human zoonotic risk; further investigation of transmission pathways and occupational exposure is needed before clinical recommendations can be informed.
Graded across the dimensions that decide whether you should act, each from what the source actually supports. There is no single score, and where a dimension was not assessed it says so.
Hepatitis E virus (HEV) is a small, non-enveloped RNA virus primarily transmitted via the fecal-oral route, causing large-scale outbreaks or sporadic infections. With the increasing farming and trade of fur-bearing animals in China, potential zoonotic risks have gained attention. This study aimed to investigate the prevalence and epidemiological trends of HEV infection in farmed fur-bearing animals (raccoon dogs, mink, and foxes) in Hebei Province, China. A total of 272 liver and fecal samples were collected from fur farms. HEV RNA was detected using RT-qPCR and nested RT-PCR, followed by amplification of the ORF2 region and whole-genome sequencing. Infection rates were calculated, and phylogenetic analysis was performed on the obtained sequences. Overall, 43 samples (15.81%) tested positive for HEV RNA. The infection rates were 19.35% (36/186) in raccoon dogs and 8.64% (7/81) in mink; no HEV RNA was detected in foxes. A total of 24 ORF2 fragments and 11 full-genome sequences were obtained. Phylogenetic analysis showed that all full-genome sequences belonged to HEV genotype 4 and formed two distinct branches. One branch clustered with HEV-4d and was closely related to swine-derived HEV sequences from Gansu Province, China. The other branch exhibited significant genetic divergence from known HEV-4 subtypes, potentially representing a new subtype or variant. This study systematically investigated HEV prevalence in fur-bearing animals and, for the first time, obtained the complete genome sequence of an HEV-4 isolate from mink in Hebei Province. This indicates that there may be a new subtype of HEV-4 in raccoon dogs, which provides the latest data of HEV infection and circulation in fur animals in Hebei Province and supports the formulation of effective public health policies.
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