ArticleVeterinary research communications2026
A novel Chaphamaparvovirus detected in breeding Muscovy Ducks with hepatitis.
Article in Veterinary research communications, 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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Abstract
Since 2022, a decrease in egg production and hatchability, along with hepatitis-like symptoms, has been frequently reported in Muscovy duck farms in southern China. Using metagenomic sequencing, a novel Chaphamaparvovirus (ChPV), designated MuChPV-GD2022, was detected in the livers of the diseased ducks. Phylogenetic analysis revealed that the MuChPV-GD2022 strain shares 61.8-77.4% genome identity with duck-origin Chaphamaparvoviruses, and 44.3-77.4% with avian-origin Chaphamaparvoviruses. The NS1 protein amino acid sequence showed a 29.3-71.5% similarity to those of other known Chaphamaparvoviruses. These findings support the classification of MuChPV-GD2022 as a new species in the genus Chaphamaparvovirus, family Parvoviridae. Since virus isolation was not achieved due to technical constraints, the evidence suggests MuChPV may be associated with the hepatitis-like disease. Furthermore, a TaqMan qPCR assay targeting NS1 gene of the virus was developed and validated for specificity, sensitivity, and repeatability, which provides a sensitive tool not only for virus detection but also for epidemiological surveillance of MuChPV infections.
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