Tick-Borne Encephalitis Virus: 2nd Edition

A special issue of Pathogens (ISSN 2076-0817).

Deadline for manuscript submissions: closed (31 January 2026) | Viewed by 1026

Special Issue Editor


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Guest Editor
Department of Infectious Diseases and Neuroinfections, Medical University of Bialystok, 15-089 Białystok, Poland
Interests: TBE; TBEV; tick; encephalitis; meningitis
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Special Issue Information

Dear Colleagues,

Tick-borne encephalitis (TBE) is an emerging vector-borne disease in Europe caused by tick-borne encephalitis virus (TBEV), which belongs to the Flaviviridae family. The number of TBE cases in Europe varies depending on the country and ranges from a few cases up to 1000 cases per year. There are three distinct clinical forms of TBE: meningitis, meningoencephalitis, and meningoencephalomyelitis. In patients with meningoencephalitis and meningoencephalomyelitis, the course of the disease is more severe. The mortality rate is 1%–4%, and a fatal outcome is usually observed in elderly or immunodeficient patients, but occasionally in young persons also.

Although most patients quickly recover from the disease, some require further neurological and psychiatric treatment due to persisting symptoms. So‐called post‐encephalitic TBE syndrome was described in 35%–58% of patients. This may cause long‐term morbidity, which often affects the patient’s quality of life and forces a change in lifestyle. The most commonly reported symptoms are cognitive or neuropsychiatric complaints, balance disorders, headache, dysphasia, hearing defects, and limb paresis.

The pathogenesis of different clinical presentations and sequelae development in TBE has not been fully recognized, so far. TBE virus neurotropism preferentially targets large neurons of the anterior horns, medulla oblongata, pons, dentate nucleus, Purkinje cells, and striatum. It has been confirmed that the disease may lead to nerve cell destruction.

Although there is a vaccine available, treatment remains symptomatic.

This Special Issue will focus on, but not exclusively, the following areas of research:

  1. Epidemiological aspects of TBE;
  2. Pathogenesis and diagnostics of TBE in humans;
  3. Development of sequelae after TBE;
  4. Approach to prevention and treatment;
  5. Development of novel therapeutic strategies against TBE complications.

Prof. Dr. Anna Moniuszko-Malinowska
Guest Editor

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Keywords

  • TBE
  • TBEV
  • tick
  • encephalitis
  • meningitis

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Published Papers (1 paper)

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Research

12 pages, 976 KB  
Article
Two Coding-Complete Genomes of Tick-Borne Encephalitis Virus Sequenced from Ixodes persulcatus Collected in Bulgan, Mongolia
by Nora G. Cleary, Nyamdelger Tsevelmaa, Julia E. Paoli, Micah Hoylman, Doniddemberel Altantogtokh, Michael R. Wiley, Jessica D. Wiley, Juan G. Perez Jimenez, Adam Salyer, Irina V. Etobayeva, Nergui Davaasuren, Buyandelger Bolorchimeg, Bandikhuu Amgalanbayar, Carla Mavian, Andrew G. Letizia, Bazartseren Boldbaatar and Michael E. von Fricken
Pathogens 2026, 15(4), 378; https://doi.org/10.3390/pathogens15040378 - 1 Apr 2026
Viewed by 424
Abstract
Tick-borne encephalitis virus (TBEV) is primarily transmitted by Ixodes spp. and poses significant health risks, leading to morbidity and mortality in humans. Two of the five subtypes, Siberian and Far Eastern are known to circulate in Mongolia. In 2021, Ixodes persulcatus ticks were [...] Read more.
Tick-borne encephalitis virus (TBEV) is primarily transmitted by Ixodes spp. and poses significant health risks, leading to morbidity and mortality in humans. Two of the five subtypes, Siberian and Far Eastern are known to circulate in Mongolia. In 2021, Ixodes persulcatus ticks were collected from Bulgan aimag (province) using flagging and dragging methods and subsequently screened for TBEV using PCR. Positive samples underwent sequencing using an Oxford Nanopore Technologies-based hybrid capture approach, resulting in two coding-complete TBEV genomes from separate tick pools. Phylogenetic analysis classified both genomes within the Siberian subtype, grouping them with other Mongolian sequences from I. persulcatus collected in 2014, 2020, 2021, and 2023. The study sequences, PX654173 and PX654174, showed high genetic similarity (99.9% and 99.8%, respectively) to the sequence PQ479142, obtained from I. persulcatus ticks in Selenge, Mongolia, in 2021. The estimated time to most recent common ancestor (TMRCA) of the Siberian genotype was approximately 981 CE (95% HPD: 646–1347) with the emergence of a distinct Mongolian clade of TBEV around 1888 CE (95% HPD: 1834–1934). These findings highlight the value of expanded whole-genome sequencing to improve our understanding of TBEV’s genetic diversity and evolutionary history in Central Asia. Full article
(This article belongs to the Special Issue Tick-Borne Encephalitis Virus: 2nd Edition)
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