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Phylogenetic analysis of the haemagglutinin gene of canine distemper virus strains detected from breeding foxes, raccoon dogs and minks in China

文献类型： 外文期刊

作者： Zhao, Jian-Jun 1 ; Yan, Xi-Jun 1 ; Chai, Xiu-Li 1 ; Martella, Vito; Luo, Guo-Liang 1 ; Zhang, Hai-Ling 1 ; Gao, Han 1 ;

作者机构： 1.Chinese Acad Agr Sci CAAS, Inst Special Econ Anim & Plant Sci, Div Zoonoses, Jilin 132109, Peoples R China

2.Chinese Acad Agr Sci CAAS, Inst Special Econ Anim &

关键词： Canidae;foxes;mink;viral diseases of animals and humans;mink diseases;canine distemper;Canine distemper virus;nucleotide sequences;pathotypes;serotypes;vaccines;antigenic variation;molecular genetics;genes;hemagglutinins;sequence analysis;genotype;phylogeny;genetic variation;geographical variation;China

期刊名称：VETERINARY MICROBIOLOGY （ 影响因子：3.293； 五年影响因子：3.599 ）

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收录情况： SCI

摘要： Canine distemper virus (CDV) infects a variety of carnivores, including wild and domestic Canidae. Genetic/antigenic heterogeneity has been observed among the various CDV strains, notably in the haemagglutinin (H) gene, that appears as a good target to gather epidemiological information. Based on sequence analysis of the H gene, wild-type CDV strains cluster into distinct geographic lineages (genotypes), irrespective of the species of isolation. The sequence of the H gene of 28 CDV strains detected from both vaccinated and non-vaccinated breeding foxes, raccoon dogs and minks from different geographical areas of China during the years 2004-2008 was determined. All the CDV strains but two (strains HL and HLJ2) were characterized as Asia-1 genotype and were highly similar to each other (96.2-99.7% at the amino acid [aa] level) and to other Asia-1 strains (96.1-99.5% aa) previously detected in China. The CDV strains HL and HLJ2 were both collected from foxes in Heilongjiang province in 2005. Strain HL resembled CDVs of the Arctic genotype (GR88-like) and displayed high aa identity (98.0%) to the Chinese canine strain Liu. By converse, strain HLJ2 was barely related to CDVs of the Asia-2 genotype (88.7-90.3% aa identity), and could represent a novel CDV genotype, tentatively proposed as Asia-3. These results suggest that at least three different CDV genotypes, distantly related (81.8-91.6% aa identity) to the vaccine strains, Onderstepoort-like (America-1 genotype), are currently circulating in breeding foxes, raccoon dogs and minks in China, and that the genotype Asia-1 is predominant. Whether the diversity between wild-type CDVs and the vaccine strains may affect, to some extent, the efficacy of the vaccines deserves further investigations.

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