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Phylogenetic and pathogenic characterization of current fowl adenoviruses in China

文献类型： 外文期刊

作者： Li, Shuo 1 ; Zhao, Rui 1 ; Yang, Qingzhou 1 ; Wu, Meihua 1 ; Ma, Jinhuan 1 ; Wei, Yifan 1 ; Pang, Zifeng 1 ; Wu, Changrong 1 ; Liu, Yanwei 1 ; Gu, Yongxia 1 ; Liao, Ming 4 ; Sun, Hailiang 1 ;

作者机构： 1.South China Agr Univ, Coll Vet Med, Guangzhou, Peoples R China

2.Key Lab Zoonosis Control & Prevent Guangdong Prov, Guangzhou, Peoples R China

3.Natl & Reg Joint Engn Lab Medicament Zoonosis Prev, Guangzhou, Peoples R China

4.Guangdong Acad Agr Sci, Inst Anim Hlth, Guangzhou, Peoples R China

5.Minist Agr & Rural Affairs, Key Lab Prevent & Control Avian Influenza & Other, Beijing, Peoples R China

关键词： Fowl adenovirus; Homologous recombination; Pathogenicity; Chicken

期刊名称：INFECTION GENETICS AND EVOLUTION （ 影响因子：4.393； 五年影响因子：3.656 ）

ISSN： 1567-1348

年卷期： 2022 年 105 卷

页码：

收录情况： SCI

摘要： In recent years, fowl adenoviruses (FAdVs) continue to outbreak and cause huge economic losses to the poultry industry in China. The homologous recombination accounts for the diversity serotypes of adenovirus. However, the prevalence, recombination and pathogenicity of current FAdVs remain unclear. Herein, the prevalence, phylogenetic feature and pathogenicity of FAdVs in China in 2019 were characterized. Our findings showed that multiple species and serotypes of FAdVs currently circulate in China, including A, C, D and E species, and 1, 2, 4, 8a and 8b serotypes. Notably, the recombination occurred between FAdV-8a and FAdV-8b, and the recombi-nation regions included Hexon, Fiber, ORF19 and ORF20. All five FAdVs replicated effectively in various chicken tissues, and viral shedding peaked at 4-8 dpi. Except CH/GDSZ/1905(FAdV-1/A), the remaining FAdVs caused obvious inclusion body hepatitis (IBH) in 3-week-old specific-pathogen-free (SPF) chickens, of which CH/JSXZ/ 1905(FAdV-4/C) caused hydropericardium-hepatitis syndrome (HHS) with a mortality rate of 62.5%. Taken together, our findings illustrate the prevalence, recombination and pathogenicity of current FAdVs in China and strengthen surveillance and further pathogenicity studies of FAdVs are extremely urgent.

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