Hao Liu , Ruyu Sun , Yaning Wu, Jiayao Feng, Guiying Fan, Shuting Chen, Lixia Li
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Molecular detection and identification of goose astrovirus in GuangDong Province, China
In recent years, Goose Astrovirus (GAstV) has become a major pathogen in China, afflicting geese with significant clinical manifestations like gout and urate deposits in organs. Notably, similar symptoms have emerged in ducks. From 2023 to 2024, 126 liver samples were collected from ducks in Guangdong Province, where farms reported emaciation, paralysis, and deaths. Metagenomic analysis pinpointed GAstV as the primary pathogen, with a 43.65 % confirmed positive rate via qPCR. A new strain, GD2406, was identified, showing 97.5 %–98.8 % similarity to 30 GAstV-2 strains in GenBank. GD2406 displayed 98.3 % and 97.7 % identity with the duck strains HNNY0620 and SDTA, and 98.3 % and 98.4 % identity with highly virulent GAstV strains HNKF-1 and HNSQ-6. Phylogenetic analysis indicated a genetic closeness between GD2406 and the goose strain HB01. There were 13 amino acid mutations, mainly within ORF2, and a single mutation differing from HNKF-1 and HNSQ-6, hinting at significant pathogenic potential for both ducks and geese. This study is the first to report GAstV causing severe symptoms and mortality in Muscovy ducks in Guangdong Province, suggesting ducks could be key hosts and underscoring the risk of cross-species transmission.
期刊介绍:
(aka Journal of Molecular Epidemiology and Evolutionary Genetics of Infectious Diseases -- MEEGID)
Infectious diseases constitute one of the main challenges to medical science in the coming century. The impressive development of molecular megatechnologies and of bioinformatics have greatly increased our knowledge of the evolution, transmission and pathogenicity of infectious diseases. Research has shown that host susceptibility to many infectious diseases has a genetic basis. Furthermore, much is now known on the molecular epidemiology, evolution and virulence of pathogenic agents, as well as their resistance to drugs, vaccines, and antibiotics. Equally, research on the genetics of disease vectors has greatly improved our understanding of their systematics, has increased our capacity to identify target populations for control or intervention, and has provided detailed information on the mechanisms of insecticide resistance.
However, the genetics and evolutionary biology of hosts, pathogens and vectors have tended to develop as three separate fields of research. This artificial compartmentalisation is of concern due to our growing appreciation of the strong co-evolutionary interactions among hosts, pathogens and vectors.
Infection, Genetics and Evolution and its companion congress [MEEGID](http://www.meegidconference.com/) (for Molecular Epidemiology and Evolutionary Genetics of Infectious Diseases) are the main forum acting for the cross-fertilization between evolutionary science and biomedical research on infectious diseases.
Infection, Genetics and Evolution is the only journal that welcomes articles dealing with the genetics and evolutionary biology of hosts, pathogens and vectors, and coevolution processes among them in relation to infection and disease manifestation. All infectious models enter the scope of the journal, including pathogens of humans, animals and plants, either parasites, fungi, bacteria, viruses or prions. The journal welcomes articles dealing with genetics, population genetics, genomics, postgenomics, gene expression, evolutionary biology, population dynamics, mathematical modeling and bioinformatics. We also provide many author benefits, such as free PDFs, a liberal copyright policy, special discounts on Elsevier publications and much more. Please click here for more information on our author services .