Evidence map›Paper›PMID 30843030›Full record

ArticleClinical infectious diseases : an official publication of the Infectious Diseases Society of America2020

Tick-borne Encephalitis Vaccine Failures: A 10-year Retrospective Study Supporting the Rationale for Adding an Extra Priming Dose in Individuals Starting at Age 50 Years.

Karin E Hansson, Anja Rosdahl, Mona Insulander, Sirkka Vene, Lars Lindquist, Sara Gredmark-Russ, Helena H Askling

Registry-linked trialAbstract read
In one paragraph

Article in Clinical infectious diseases : an official publication of the Infectious Diseases Society of America, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04573205 (Primary TBE Vaccination for the Elderly), which is not on this map. Cited by 43 papers.

0numbers the graph read from it
0cells of the map it votes in
43citing 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.

NCT04573205 phase4unknown statusnot on this mapstarted 2024, after this paper: background citation

Primary TBE Vaccination for the Elderly

TypeinterventionalSponsorRegion Örebro CountyRan2024 to 2025Enrolled90ConditionsTick-borne Encephalitis, VaccineArmsFSME-IMMUN Vaccine
3 · Its place in the literature

Who cites it

43 citing papers in PubMed.

  1. Trial
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  4. Diagnostic value of RT-PCR for detection of tick-borne encephalitis virus RNA in cerebrospinal fluid.European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology · 2026
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  17. Seroprevalence of tick-borne encephalitis virus and vaccination coverage of tick-borne encephalitis, Sweden, 2018 to 2019.Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin · 2024
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  18. Review
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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.

Karin E HanssonCenter for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden.
Anja RosdahlSchool of Medical Sciences, Örebro University, Sweden.
Mona InsulanderDepartment of Communicable Disease Control and Prevention, Stockholm County, Sweden.
Sirkka VenePublic Health Agency of Sweden, Solna, Sweden.
Lars LindquistDepartment of Medicine, Karolinska Institutet, Huddinge, Sweden.
Sara Gredmark-RussCenter for Infectious Medicine, Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden.
Helena H AsklingDivision of Infectious Diseases, Unit for Infectious Diseases, Karolinska Institutet, Stockholm, Sweden.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSouthern Sweden is endemic for tick-borne encephalitis (TBE), with Stockholm County as one of the high-risk areas. Our aim in this study was to describe cases of vaccine failures and to optimize future vaccination recommendations.

methodsPatients with TBE were identified in the notification database at the Department of Communicable Disease Control and Prevention in Stockholm County during 2006-2015. Vaccine failure was defined as TBE despite adherence to the recommended vaccination schedule with at least 2 doses. Clinical data were extracted from medical records.

resultsA total of 1004 TBE cases were identified, 53 (5%) were defined as vaccine failures. In this latter group, the median age was 62 years (6-83). Forty-three (81%) patients were aged >50 years and 2 were children. Approximately half of the patients had comorbidities, with diseases affecting the immune system accounting for 26% of all cases. Vaccine failures following the third or fourth vaccine dose accounted for 36 (68%) of the patients. Severe and moderate TBE disease affected 81% of the cases.

conclusionsTo our knowledge, this is the largest documented cohort of TBE vaccine failures. Vaccine failure after 5 TBE vaccine doses is rare. Our data provide rationale for adding an extra priming dose to those aged ≥50 years.

Indexed as

Encephalitis, Tick-BorneEncephalitis Viruses, Tick-BorneViral VaccinesAdolescentAdultAgedAged, 80 and overChildHumansMiddle AgedRetrospective StudiesSwedenYoung AdultViral VaccinesTBETBEVvaccinationvaccine failure

Identifiers

PMID30843030
PMCPMC6938976

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Registered trials

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.