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Characterization of a highly pathogenic avian influenza H5N1 virus sublineage in poultry seized at ports of entry into Vietnam
被引:35
|作者:
Nguyen, Tung
[2
]
Davis, C. Todd
[1
]
Stembridge, William
[1
]
Shu, Bo
[1
]
Balish, Amanda
[1
]
Inui, Kenjiro
[2
]
Do, Hoa T.
[2
]
Ngo, Huong T.
[2
]
Wan, Xiu-Feng
[1
]
McCarron, Margaret
[1
]
Lindstrom, Stephen E.
[1
]
Cox, Nancy J.
[1
]
Nguyen, Cam V.
[2
]
Klimov, Alexander I.
[1
]
Donis, Ruben O.
[1
]
机构:
[1] Ctr Dis Control & Prevent, Influenza Div, Atlanta, GA 30333 USA
[2] Natl Ctr Vet Diagnost, Dept Anim Hlth, Hanoi, Vietnam
来源:
关键词:
Orthomyxovirus;
Highly pathogenic avian influenza virus;
Phylogenetics;
Geographic distribution;
H5N1;
Evolution;
International trade;
MULTIPLE SUBLINEAGES;
SOUTHERN CHINA;
DUCK MEAT;
A H5N1;
EVOLUTION;
SPREAD;
D O I:
10.1016/j.virol.2009.03.006
中图分类号:
Q93 [微生物学];
学科分类号:
071005 ;
100705 ;
摘要:
Highly pathogenic avian influenza H5N1 virus was detected in poultry seized at two ports of entry located in Lang Son Province, Vietnam. Sequence analysis of the hemagglutinin (HA) genes from five H5N1 virus isolates and ten PCR amplicons from chicken cloacal samples revealed their close phylogenetic relationship to clade 7 H5N1 HA genes. However, these HA genes exhibited extensive genetic divergence at both the nucleotide and amino acid levels in comparison to previously described clade 7 viruses; e.g., A/chicken/Shanxi/2/2006. In addition, hemagglutination inhibition tests revealed antigenic differences between these and previously isolated H5N1 viruses from Vietnam. These results indicate that viruses with clade 7 HA are evolving rapidly in poultry in Southeast Asia. Published by Elsevier Inc.
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页码:250 / 256
页数:7
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