Evidence map›Paper›PMID 31084456›Full record

ArticleEmerging microbes & infections2019

Recent establishment of tick-borne encephalitis foci with distinct viral lineages in the Helsinki area, Finland.

Teemu Smura, Elina Tonteri, Anu Jääskeläinen, Gabriel von Troil, Suvi Kuivanen, Otso Huitu, Lauri Kareinen, Joni Uusitalo, Ruut Uusitalo, Tuula Hannila-Handelberg and 6 more

Abstract read
In one paragraph

Article in Emerging microbes & infections, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

22 citing papers in PubMed.

  1. Article
  2. Rickettsia spp. in finnish ixodid ticks.Parasites & vectors · 2025
    Article
  3. Review
  4. Article
  5. Article
  6. Article
  7. Article
  8. Fatal Case of Imported Tick-Borne Encephalitis in South Serbia.Tropical medicine and infectious disease · 2022
    Article
  9. Article
  10. Article
  11. Article
  12. The regional decline and rise of tick-borne encephalitis incidence do not correlate with Lyme borreliosis, Austria, 2005 to 2018.Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin · 2021
    Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

16 authors.

Teemu Smuraa Department of Virology , University of Helsinki , Helsinki , Finland.
Elina Tonteric Centers for Military Medicine and Biothreat Preparedness , Helsinki , Finland.
Anu Jääskeläinenb Division of Clinical Microbiology , Helsinki University Hospital Laboratory Services (HUSLAB) , Helsinki , Finland.
Gabriel von Troild Archipelago Doctors Ltd , Parainen , Finland.
Suvi Kuivanena Department of Virology , University of Helsinki , Helsinki , Finland.
Otso Huitue Natural Resources Institute Finland (Luke) , Helsinki , Finland.
Lauri Kareinena Department of Virology , University of Helsinki , Helsinki , Finland.
Joni Uusitaloa Department of Virology , University of Helsinki , Helsinki , Finland.
Ruut Uusitaloa Department of Virology , University of Helsinki , Helsinki , Finland.
Tuula Hannila-Handelbergc Centers for Military Medicine and Biothreat Preparedness , Helsinki , Finland.
Liina Voutilainenc Centers for Military Medicine and Biothreat Preparedness , Helsinki , Finland.
Simo Nikkaric Centers for Military Medicine and Biothreat Preparedness , Helsinki , Finland.
Tarja Sironena Department of Virology , University of Helsinki , Helsinki , Finland.
Jussi Saneh Department of Health Security, Infectious Disease Control and Vaccinations Unit , National Institute for Health and Welfare , Helsinki , Finland.
Janne Castrénd Archipelago Doctors Ltd , Parainen , Finland.
Olli Vapalahtia Department of Virology , University of Helsinki , Helsinki , Finland.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Number of tick-borne encephalitis (TBE) cases has increased and new foci have emerged in Finland during the last decade. We evaluated risk for locally acquired TBE in the capital region inhabited by 1.2 million people. We screened ticks and small mammals from probable places of TBE virus (TBEV) transmission and places without reported circulation. The TBEV positive samples were sequenced and subjected to phylogenetic analysis. Within the study period 2007-2017, there was a clear increase of both all TBE cases and locally acquired cases in the Helsinki area. The surveillance of ticks and small mammals for TBEV confirmed four distinct TBEV foci in the Helsinki area. All detected TBEV strains were of the European subtype. TBEV genome sequences indicated that distinct TBEV lineages circulate in each focus. Molecular clock analysis suggested that the virus lineages were introduced to these foci decades ago. In conclusion, TBE has emerged in the mainland of Helsinki area during the last decade, with at least four distinct virus lineages independently introduced into the region previously. Although the overall annual TBE incidence is below the threshold for recommending general vaccinations, the situation requires further surveillance to detect and prevent possible further emergence of local TBE clusters.

Indexed as

Genetic VariationAnimalsDisease Transmission, InfectiousEncephalitis, Tick-BorneEncephalitis Viruses, Tick-BorneFinlandGenotypeHumansIncidenceMammalsMolecular EpidemiologyPhylogenySequence Analysis, DNATicksFinlandflavivirusincidencephylogenyTick-borne encephalitis

Identifiers

PMID31084456
PMCPMC6522972

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.