Evidence map›Paper›PMID 38133440›Full record

ReviewTropical medicine and infectious disease2023

Powassan Virus Infections: A Systematic Review of Published Cases.

Loukas Kakoullis, Victor Renault Vaz, Divmehar Kaur, Sonia Kakoulli, George Panos, Lin H Chen, Irmgard Behlau

Open access · goldAbstract readReview
In one paragraph

Review in Tropical medicine and infectious disease, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
3.5field-weighted citation impact, top 6% of its field
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

17 citing papers in PubMed, 18 citations in OpenAlex.

  1. Powassan Virus NS5 Antagonizes TYK2-Mediated Immune Signaling Pathways.bioRxiv : the preprint server for biology · 2026
    Article
  2. Article
  3. Review
  4. Review
  5. An Unusual Case ofInfectious disease reports · 2026
    Article
  6. Article
  7. Anaplasmosis: Emerging threat in Canada.Canadian family physician Medecin de famille canadien · 2025
    Review
  8. Tick-induced neurological disorders.Journal of neurology · 2025
    Review
  9. Article
  10. Review
  11. Review
  12. Review
  13. TITAN-RNA: A hybrid-capture sequencing panel detects known and unknownbioRxiv : the preprint server for biology · 2025
    Article
  14. Article
  15. Article
  16. Powassan virus encephalitis in a 9-year-old.CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 2024
    Article
  17. 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

7 authors at 4 institutions in 3 countries.

Loukas KakoullisDepartment of Medicine, Mount Auburn Hospital, Cambridge, MA 02138, USA.
Victor Renault VazDepartment of Medicine, Mount Auburn Hospital, Cambridge, MA 02138, USA.
Divmehar KaurDepartment of Medicine, Mount Auburn Hospital, Cambridge, MA 02138, USA.
Sonia KakoulliMedical School, University of Groningen, 9712 Groningen, The Netherlands.
George PanosDivision of Infectious Diseases, Department of Medicine, School of Health Sciences, University of Patras, 26504 Patras, Greece.
Lin H ChenHarvard Medical School, Boston, MA 02115, USA.ORCID 0000-0002-5684-8436
Irmgard BehlauHarvard Medical School, Boston, MA 02115, USA.
Mount Auburn Hospital · USHarvard University · USUniversity Medical Center Groningen · NLUniversity of Patras · GR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPowassan virus is an emerging neurotropic arbovirus transmitted by the tick

methodsPubMed was searched until August 2023 using the term "Powassan", to identify all published cases of Powassan virus infections, as per PRISMA guidelines.

resultsAmong the 380 abstracts identified, 45 studies describing 84 cases (70 adult, 14 pediatric) were included. Cases were reported from the USA and Canada. Complications included paralysis in 44.1% of adult and 42.6% of pediatric cases, cognitive deficits in 33.3% of adult and 25% of pediatric cases, while the mortality rate was 19.1% and 7.1% in the adult and pediatric populations, respectively. Correlation analysis revealed an association between mortality and age (r = 0.264,

conclusionPowassan virus infections have significant morbidity and mortality and should be suspected in cases of encephalitis and possible tick exposure. PROSPERO registration number: CRD42023395991.

Indexed as

climate changeemerging infectious diseaseexpanding habitattick-borne infection

Identifiers

PMID38133440
PMCPMC10747444
OpenAlexW4389057222

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.