Evidence map›Paper›PMID 27631764›Full record

ArticleExperimental & applied acarology2016

Long-term study of the prevalence of Borrelia burgdorferi s.l. infection in ticks (Ixodes ricinus) feeding on blackbirds (Turdus merula) in NE Poland.

Alicja Gryczyńska, Renata Welc-Falęciak

Abstract read
In one paragraph

Article in Experimental & applied acarology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing 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

19 citing papers in PubMed.

  1. Article
  2. Article
  3. The Occurrence ofPathogens (Basel, Switzerland) · 2025
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  4. Article
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  7. Article
  8. Genetic Diversity ofLife (Basel, Switzerland) · 2023
    Article
  9. Tick Infestation in Migratory Birds of the Vistula River Valley, Poland.International journal of environmental research and public health · 2022
    Article
  10. Red Foxes (Pathogens (Basel, Switzerland) · 2022
    Article
  11. Article
  12. Article
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  14. Review
  15. Article
  16. Article
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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

2 authors.

Alicja GryczyńskaDepartment of Ecology, Institute of Zoology, Faculty of Biology, Biological and Chemical Research Centre, University of Warsaw, 101 Żwirki i Wigury St., 02-089, Warsaw, Poland. alicja@biol.uw.edu.pl.
Renata Welc-FalęciakDepartment of Parasitology, Institute of Zoology, Faculty of Biology, University of Warsaw, 1 Miecznikowa St., 02-096, Warsaw, Poland.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Seeking evidence to confirm that blackbirds (Turdus merula) may be involved in environmental maintenance of Borrelia burgdorferi s.l. (the causative agent of Lyme borreliosis), we conducted a long-term study over three separate 2-year periods, together embracing a span of almost 20 years, all in the same area in northeastern Poland. We examined a total of 78 blackbirds and collected 623 Ixodes ricinus ticks feeding on them. The tick infestation prevalence was found to be very high (89.7 %). Among all ticks collected, 9.8 % individuals were infected with B. burgdorferi s.l. spirochetes. We found statistically significant growth in the prevalence of infected ticks as well as an increasing proportion of blackbirds hosting them in subsequent years of study. Ticks feeding on blackbirds were infected mainly with B. garinii (45.7 %), a genospecies commonly encountered in birds, and with B. afzelii (28.6 %), until recently considered rodent-associated. We also identified B. turdi (22.9 %), frequently found in recent years in ticks feeding on birds, and B. spielmanii (2.8 %), which had previously not been found in infected ticks feeding on blackbirds. We also found that ticks infected with genospecies associated with avian reservoir groups (B. garinii and B. turdi) were not randomly distributed on blackbirds, but instead focused on certain bird specimens. We therefore conjecture that this is a result of ticks becoming infected either from the host blackbird itself, or from other infected ticks feeding on the same host blackbird. We did not find any similar dependency for the rodent specialist B. afzelii.

Indexed as

SongbirdsAnimalsBird DiseasesBorrelia burgdorferi GroupDisease ReservoirsFemaleIxodesLarvaLyme DiseaseMaleNymphPolandPrevalenceTick InfestationsBlackbirdsBorrelia burgdorferi s.l.Ixodes ricinusLyme borreliosis

Identifiers

PMID27631764
PMCPMC5061843

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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.