ArticleInfectious medicine2026
Genomic characteristics and tracing analysis of an acute gastroenteritis outbreak associated with rotavirus C in a boarding high school.
Article in Infectious medicine, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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9 authors.
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Abstract
Background: Rotaviruses are major pathogens of childhood acute gastroenteritis, dominated by rotavirus A (RVA). Outbreaks caused by human rotavirus C (RVC) are rarely reported, and relevant genomic data remain scarce. This genomic investigation of an RVC outbreak improves our understanding of viral diversity and transmission dynamics. Methods: We performed epidemiological surveys, nucleic acid testing and whole-genome sequencing (WGS) on specimens from a 2025 RVC-associated gastroenteritis outbreak at a Chinese boarding high school. Sequence alignment, phylogenetic and molecular tracing analyses were conducted to explore RVC evolution via point mutation, segment reassortment and genomic recombination. Results: This typical point-source campus outbreak was linked to an indoor student gathering matching the incubation period of RVC. Thirteen RVC FX strains were recovered from 11 rectal swabs and two vomitus samples. Their viral protein (VP) 4 and VP7 sequences shared high homology with Russian reference strains, carrying distinct amino acid variations. No segment reassortment or recombination was detected in VP4/VP7 genes. Conclusions: Dense, closed campus settings facilitate RVC clustered transmission. Limitations included absent screening of asymptomatic canteen staff. Rapid nucleic acid testing enabled timely pathogen identification for outbreak control. Greater attention should be paid to the public health risk of RVC. These whole-genome sequencing data enrich resources for studying RVC evolution and vaccine development.
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