title: Detection and characterization of tick-borne encephalitis virus in Baltic countries and eastern Poland.
abstract: Ticks were collected from the vegetation in the Baltic countries Estonia, Latvia, Lithuania and eastern Poland and analyzed for the presence of tick-borne encephalitis virus (TBEV) by amplification of the partial E and NS3 genes. In Estonia we found statistically significant differences in the TBEV prevalence between I. persulcatus and I. ricinus ticks (4.23% and 0.42%, respectively). In Latvia, the difference in TBEV prevalence between the two species was not statistically significant (1.02% for I. persulcatus and 1.51% for I. ricinus, respectively). In Lithuania and Poland TBEV was detected in 0.24% and 0.11% of I. ricinus ticks, respectively. Genetic characterization of the partial E and NS3 sequences demonstrated that the TBEV strains belonged to the European subtype in all countries, as well as to the Siberian subtype in Estonia. We also found that in areas where ranges of two tick species overlap, the TBEV subtypes may be detected not only in their natural vector, but also in sympatric tick species.
authors: Department of Virology, National Institute for Health Development, Tallinn, Estonia.
authors: Olga
authors: O
authors: Katargina
authors: Stanislava
authors: S
authors: Russakova
authors: Julia
authors: J
authors: Geller
authors: Macije
authors: M
authors: Kondrusik
authors: Joanna
authors: J
authors: Zajkowska
authors: Milda
authors: M
authors: Zygutiene
authors: Antra
authors: A
authors: Bormane
authors: Julia
authors: J
authors: Trofimova
authors: Irina
authors: I
authors: Golovljova
mesh_terms: D000818:Animals; D001096:Arachnid Vectors / Q000821:virology*; D001454:Baltic States; D004669:Encephalitis Viruses, Tick-Borne / Q000235:genetics*; D017344:Genes, Insect; D006801:Humans; D018884:Ixodes / Q000235:genetics / Q000821:virology*; D016013:Likelihood Functions; D058889:Molecular Typing; D010802:Phylogeny; D011044:Poland; D015995:Prevalence; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D017422:Sequence Analysis, DNA; D017361:Viral Nonstructural Proteins / Q000235:genetics
chemical_list: D012336:RNA, Ribosomal, 16S; D017361:Viral Nonstructural Proteins
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