Phylogenetic analysis of rabies virus isolated from canids in North and Northeast Brazil

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• 作者：Débora Nunes de Souza ; Pedro Carnieli Jr ; Carla Isabel Macedo…
• 刊名：Archives of Virology
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：162
• 期：1
• 页码：71-77
• 全文大小：
• 刊物类别：Biomedical and Life Sciences
• 刊物主题：Virology; Medical Microbiology; Infectious Diseases;
• 出版者：Springer Vienna
• ISSN：1432-8798
• 卷排序：162

文摘

Cases of canine rabies continue to occur in North and Northeast Brazil, and the number of notifications of rabies cases in wild canids has increased as a result of the expansion of urban areas at the expense of areas with native vegetation. In light of this, we performed molecular characterization of rabies virus isolates from dogs and Cerdocyon thous from various states in North and Northeast Brazil. In all, 102 samples from dogs (n = 56) and Cerdocyon thous (n = 46) collected between 2006 and 2012 were used. The nucleotide sequences obtained for the N gene of rabies virus were analyzed, and phylogenetic analysis revealed the presence of two distinct genetic lineages, one associated with canids and one with bats, and, within the canid cluster, two distinct sublineages circulating among dogs and Cerdocyon thous. In addition, phylogenetic groups associated with geographic region and fourteen cases of interspecific infection were observed among the isolates from canids. Our findings show that analysis of rabies virus lineages isolated from reservoirs such as canids must be constantly evaluated because the mutation rate is high.