Evidence map›Paper›PMID 30207871›Full record

ArticleVector borne and zoonotic diseases (Larchmont, N.Y.)2019

Human-Biting Ixodes Ticks and Pathogen Prevalence from California, Oregon, and Washington.

Guang Xu, Patrick Pearson, Elizabeth Dykstra, Elizabeth S Andrews, Stephen M Rich

Open access · bronzeAbstract read
In one paragraph

Article in Vector borne and zoonotic diseases (Larchmont, N.Y.), 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 48 papers.

0numbers the graph read from it
0cells of the map it votes in
48citing papers in PubMed
4.4field-weighted citation impact, top 5% 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

48 citing papers in PubMed, 72 citations in OpenAlex.

  1. Pathogens (Basel, Switzerland) · 2026
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  3. Surveillance forCanada communicable disease report = Releve des maladies transmissibles au Canada · 2026
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  6. Infection and immunity · 2025
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  7. Detection ofInsects · 2025
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  11. Review
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  16. Article
  17. Article
  18. Detection ofVector borne and zoonotic diseases (Larchmont, N.Y.) · 2023
    Article
  19. Surveillance forCanada communicable disease report = Releve des maladies transmissibles au Canada · 2023
    Article
  20. Human-BitingMicroorganisms · 2023
    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

5 authors at 3 institutions in 2 countries.

Guang Xu1 Laboratory of Medical Zoology, Department of Microbiology, University of Massachusetts-Amherst , Amherst, Massachusetts.
Patrick Pearson1 Laboratory of Medical Zoology, Department of Microbiology, University of Massachusetts-Amherst , Amherst, Massachusetts.
Elizabeth Dykstra2 Zoonotic Disease Program, Washington State Department of Health , Olympia, Washington.
Elizabeth S Andrews3 Vector-Borne Disease Section, California Department of Public Health , Elk Grove, California.
Stephen M Rich1 Laboratory of Medical Zoology, Department of Microbiology, University of Massachusetts-Amherst , Amherst, Massachusetts.
University of Massachusetts Amherst · USVector & Vector-Borne Diseases Research Institute · TZWashington State Department of Health · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

From July 2006 through August 2017, a passive surveillance study of Ixodes ticks submitted from California, Oregon, and Washington was conducted by the TickReport program at the University of Massachusetts, Amherst. In total, 549 human-biting Ixodes ticks were submitted comprising both endemic and nonendemic species. We found that 430 endemic ticks were from 3 Ixodes species: Ixodes pacificus, Ixodes spinipalpis, and Ixodes angustus, whereas Ixodes scapularis (n = 111) was the most common species among the 119 nonendemic ticks. The submission peak for nymphal I. pacificus and I. spinipalpis was June, while submission peak for adult I. pacificus and nymphal I. angustus was April and September, respectively. Endemic ticks commonly attached to the lower extremities of their victims, and individuals younger than 9 years old were frequently bitten. The infection prevalence of Borrelia burgdorferi sensu lato, Borrelia miyamotoi, and Anaplasma phagocytophilum in I. pacificus ticks was 1.31%, 1.05%, and 0.52%, respectively, and the prevalence of B. burgdorferi s. l. and A. phagocytophilum in I. spinipalpis ticks was 14.29% and 10.71%, respectively. Furthermore, two species within the B. burgdorferi s. l. complex were detected in West Coast ticks: B. burgdorferi sensu stricto and Borrelia lanei. I. spinipalpis had the highest Borrelia prevalence among endemic ticks, and it was caused exclusively by B. lanei. Borrelia mayonii, Babesia microti, and Ehrlichia muris-like agent were not detected in these endemic ticks. In this study, we show that many nonendemic Ixodes ticks (119/549) are most likely acquired from travel to a different geographic region. We report cases of conventionally recognized nonhuman feeders (I. spinipalpis and I. angustus) parasitizing humans. The highest pathogen prevalence in I. spinipalpis may indicate a larger public health threat than previously thought, and the enzootic life cycle and pathogenicity of B. lanei warrant further study.

Indexed as

AdolescentAdultAnimal DistributionAnimalsCaliforniaChildChild, PreschoolHumansInfantIxodesMiddle AgedNymphOregonSeasonsTick BitesWashingtonCaliforniahuman-bitingOregonpathogenWashington

Identifiers

PMID30207871
PMCPMC6354597
OpenAlexW2890711294

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.