Recent Ancestry of Kyasanur Forest Disease Virus

被引:65
作者
Mehla, Rajeev [1 ]
Kumar, Sandeep R. P. [1 ]
Yadav, Pragya [1 ]
Barde, Pradip V. [1 ]
Yergolkar, Prasanna N. [1 ]
Erickson, Bobbie R. [2 ]
Carroll, Serena A. [2 ]
Mishra, Akhilesh C. [1 ]
Nichol, Stuart T. [2 ]
Mourya, Devendra T. [1 ]
机构
[1] Natl Inst Virol, Pune 411021, Maharashtra, India
[2] Ctr Dis Control & Prevent, Atlanta, GA USA
关键词
HEMORRHAGIC-FEVER VIRUS; SAUDI-ARABIA; MOLECULAR PHYLOGENIES; SEQUENCE ALIGNMENT; FLAVIVIRUSES; TICK; EVOLUTION;
D O I
10.3201/eid1509.080759
中图分类号
R392 [医学免疫学]; Q939.91 [免疫学];
学科分类号
100102 ;
摘要
Kyasanur Forest disease virus (KFDV) is enzootic to India and maintained in ticks, mammals, and birds. It causes severe febrile illness in humans and was first recognized in 1957 associated with a high number of deaths among monkeys in Kyasanur Forest. Genetic analysis of 48 viruses isolated in India during 1957-2006 showed low diversity (1.2%). Bayesian coalescence analysis of these sequences and those of KFDVs from Saudi Arabia and the People's Republic of China estimated that KFDVs have evolved at a mean rate of approximate to 6.4 x 10(-4) substitutions/site/year, which is similar to rates estimated for mosquito-borne flaviviruses. KFDVs were estimated to have shared a common ancestor in approximate to 1942, fifteen years before identification of the disease in India. These data are consistent with the view that KFD represented a newly emerged disease when first recognized. Recent common ancestry of KFDVs from India and Saudi Arabia, despite their large geographic separation, indicates long-range movement of virus, possibly by birds.
引用
收藏
页码:1431 / 1437
页数:7
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