Distribution of varicella-zoster virus (VZV) wild-type genotypes in northern and southern Europe: Evidence for high conservation of circulating genotypes
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- 作者：Vladimir N. Loparev ; Elena N. Rubtcova ; V ; a Bostik ; Valentina Tzaneva ; Andreas Sauerbrei ; Alma Robo ; Eva Sattler-Dornbacher ; Iva Hanovcova ; Vera Stepanova ; Miroslav Splino ; Vladimir Eremin ; Marjaleena
- 关键词：VZV ; Varicella-zoster virus ; Wild-type virus ; Chickenpox ; Zoster ; Genotyping ; Single nucleotide polymorphisms ; Molecular epidemiology ; Mosaic strains
- 刊名：Virology
- 出版年：2009
- 出版时间：20 January 2009
- 年：2009
- 卷：383
- 期：2
- 页码：216-225
- 全文大小：1309 K
文摘
Phylogenetic analysis of 19 complete VZV genomic sequences resolves wild-type strains into 5 genotypes (E1, E2, J, M1, and M2). Complete sequences for M3 and M4 strains are unavailable, but targeted analyses of representative strains suggest they are stable, circulating VZV genotypes. Sequence analysis of VZV isolates identified both shared and specific markers for every genotype and validated a unified VZV genotyping strategy. Despite high genotype diversity no evidence for intra-genotypic recombination was observed. Five of seven VZV genotypes were reliably discriminated using only four single nucleotide polymorphisms (SNP) present in ORF22, and the E1 and E2 genotypes were resolved using SNP located in ORF21, ORF22 or ORF50. Sequence analysis of 342 clinical varicella and zoster specimens from 18 European countries identified the following distribution of VZV genotypes: E1, 221 (65 % ); E2, 87 (25 % ); M1, 20 (6 % ); M2, 3 (1 % ); M4, 11 (3 % ). No M3 or J strains were observed.