Evidence map›Paper›PMID 33272317›Full record

ArticleParasites & vectors2020

Migratory birds as disseminators of ticks and the tick-borne pathogens Borrelia bacteria and tick-borne encephalitis (TBE) virus: a seasonal study at Ottenby Bird Observatory in South-eastern Sweden.

Peter Wilhelmsson, Thomas G T Jaenson, Björn Olsen, Jonas Waldenström, Per-Eric Lindgren

Open access · goldAbstract read
In one paragraph

Article in Parasites & vectors, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 51 papers.

0numbers the graph read from it
0cells of the map it votes in
51citing papers in PubMed
7.5field-weighted citation impact, top 1% 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

51 citing papers in PubMed, 84 citations in OpenAlex.

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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

5 authors at 4 institutions in 1 country.

Peter WilhelmssonDivision of Inflammation and Infection, Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden. peter.wilhelmsson@liu.se.
Thomas G T JaensonDepartment of Organismal Biology, Evolutionary Biology Centre, Uppsala University, Uppsala, Sweden.
Björn OlsenZoonosis Science Center, Department of Medical Sciences, Uppsala University, Uppsala, Sweden.
Jonas WaldenströmCenter for Ecology and Evolution in Microbial Model Systems, Linnaeus University, Kalmar, Sweden.
Per-Eric LindgrenDivision of Inflammation and Infection, Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden.
Uppsala University · SELinköping University · SELinnaeus University · SERegion Jönköpings län · SE

Funding

CSRD VA 1Forskningsrådet i Sydöstra Sverige 657881Forskningsrådet i Sydöstra Sverige 931010Interreg 20200422Interreg 38-2-7-19
6 · The paper itself

Abstract

backgroundBirds can act as reservoirs of tick-borne pathogens and can also disperse pathogen-containing ticks to both nearby and remote localities. The aims of this study were to estimate tick infestation patterns on migratory birds and the prevalence of different Borrelia species and tick-borne encephalitis virus (TBEV) in ticks removed from birds in south-eastern Sweden.

methodsTicks were collected from resident and migratory birds captured at the Ottenby Bird Observatory, Öland, Sweden, from March to November 2009. Ticks were molecularly identified to species, and morphologically to developmental stage, and the presence of Borrelia bacteria and TBEV was determined by quantitative real-time PCR.

resultsA total of 1339 ticks in the genera Haemaphysalis, Hyalomma, and Ixodes was recorded of which I. ricinus was the most abundant species. Important tick hosts were the European robin (Erithacus rubecula), Blackbird (Turdus merula), Tree pipit (Anthus trivialis), Eurasian wren (Troglodytes troglodytes), Common redstart (Phoenicurus phoenicurus), Willow warbler (Phylloscopus trochilus), and Common whitethroat (Sylvia communis). Borrelia bacteria were detected in 25% (285/1,124) of the detached ticks available for analysis. Seven Borrelia species (B. afzelii, B. burgdorferi (s.s.), B. garinii, B. lusitaniae, B. turdi, B. valaisiana, and B. miyamotoi) were identified. B. turdi was recorded for the first time in ticks in Sweden. The number of Borrelia cells per tick ranged from 2.0 × 10

conclusionsThe results corroborate the view that the contributions of birds to human disease are substantial, particularly as blood hosts for ticks and for their short-, medium-, and long-distance dispersal. Moreover, several ground-foraging bird species appear to be important for the maintenance and dispersal of Borrelia species. The absence of TBEV in the ticks conforms to other similar studies.

Indexed as

Animal MigrationAnimalsAnimals, WildBirdsBorreliaEncephalitis, Tick-BorneEncephalitis Viruses, Tick-BorneHumansIxodesLyme DiseaseSeasonsSwedenBorrelia burgdorferi (sensu lato)Borrelia miyamotoiBorrelia prevalenceMigratory birdsTick-borne encephalitis virus

Identifiers

PMID33272317
PMCPMC7713317
OpenAlexW3110205880

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LicenceCC BY
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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.