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Chen Y, Ding Z, Liu X, Chen J, Li J, Fei Y, Liu Z, Stoeger T, Bi Y, Yin R. Biological and phylogenetic characterization of a novel hemagglutination-negative avian avulavirus 6 isolated from wild waterfowl in China. Transbound Emerg Dis 2018; 65:1421-1428. [PMID: 30146734 PMCID: PMC7169737 DOI: 10.1111/tbed.13005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Revised: 08/08/2018] [Accepted: 08/21/2018] [Indexed: 02/05/2023]
Abstract
Up to now only nine whole genome sequences of avian avulavirus 6 (AAvV‐6) had been documented in the world since the first discovery of AAvV‐6 (AAvV‐6/duck/HongKong/18/199/77) at a domestic duck in 1977 from Hong Kong of China. Very limited information is known about the regularities of transmission, genetic and biological characteristics of AAvV‐6 because of the lower isolation rate and mild losses for poultry industry. To better further explore the relationships among above factors, an AAvV‐6 epidemiological surveillance of domestic poultry and wild birds in six provinces of China suspected of sites of inter‐species transmission and being intercontinental flyways during the year 2013–2017 was conducted. Therefore, 9,872 faecal samples from wild birds and 1,642 cloacal and tracheal swab samples from clinically healthy poultry of live bird market (LBM) were collected respectively. However, only one novel hemagglutination‐negative AAvV‐6 isolate (AAvV‐6/mallard/Hubei/2015) was isolated from a fresh faecal sample obtained from mallard at a wetland of Hubei province. Sequencing and phylogenetic analyses of this AAvV‐6 isolate (AAvV‐6/mallard/Hubei/2015) indicated that this isolate grouping to genotype I were epidemiological intercontinentally linked with viruses from the wild birds in Europe and America. Meanwhile, at least two genotypes (I and II) are existed within serotype AAvV‐6. In additional, this novel hemagglutination‐negative AAvV‐6 isolate in chicken embryos restored its hemagglutination when pre‐treated with trypsin. These findings, together with data from other AAvV‐6, suggest potential epidemiological intercontinental spreads among AAvV‐6 transmission by wild migratory birds, and reveal potential threats to wild birds and domestic poultry worldwide.
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Affiliation(s)
- Yanyu Chen
- Department of Veterinary Preventive Medicine, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Zhuang Ding
- Department of Veterinary Preventive Medicine, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Xinxin Liu
- College of Food Science and Engineering, Jilin University, Changchun, China
| | - Jianjun Chen
- CAS Key Laboratory of Special Pathogens and Biosafety, Wuhan Institute of Virology, Chinese Academy of Sciences, Hubei, China
| | - Junjiao Li
- Department of Veterinary Preventive Medicine, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Yidong Fei
- Department of Veterinary Preventive Medicine, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Zhe Liu
- Department of Veterinary Preventive Medicine, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Tobias Stoeger
- Comprehensive Pneumology Center, Institute of Lung Biology and Disease (iLBD), Helmholtz Zentrum Muenchen, Munich, Germany
| | - Yuhai Bi
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Renfu Yin
- Department of Veterinary Preventive Medicine, College of Veterinary Medicine, Jilin University, Changchun, China
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