Evidence map›Paper›PMID 24940999›Full record

ArticlePloS one2014

Co-infection of blacklegged ticks with Babesia microti and Borrelia burgdorferi is higher than expected and acquired from small mammal hosts.

Michelle H Hersh, Richard S Ostfeld, Diana J McHenry, Michael Tibbetts, Jesse L Brunner, Mary E Killilea, Kathleen LoGiudice, Kenneth A Schmidt, Felicia Keesing

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 94 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
94citing papers in PubMed, 1 pooled it
7.0field-weighted citation impact, top 2% 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

94 citing papers in PubMed, 1 synthesis or guideline pooled it, 147 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. The ecology of Lyme disease: Long-term data, surprises, and a synthesis.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  4. Coinfection ecology and pathogen emergence in aApplied and environmental microbiology · 2026
    Article
  5. Article
  6. Article
  7. Review
  8. Coinfection Ecology and Pathogen Emergence in amedRxiv : the preprint server for health sciences · 2025
    Article
  9. Assessing Simultaneous Infection with Multiple Pathogens via Group Testing with Imperfect Multiplex Assays.Journal of agricultural, biological, and environmental statistics · 2025
    Article
  10. Human babesiosis: The past, present and future.Expert reviews in molecular medicine · 2025
    Review
  11. Article
  12. Prevalence ofMicroorganisms · 2024
    Article
  13. Article
  14. Host-pathogen associations inferred from bloodmeal analyses ofApplied and environmental microbiology · 2024
    Article
  15. Article
  16. DoTropical medicine and infectious disease · 2024
    Article
  17. Article
  18. Co-Occurrence ofPathogens (Basel, Switzerland) · 2024
    Article
  19. Coinfection ofPathogens (Basel, Switzerland) · 2024
    Review
  20. Tick diversity and molecular detection ofFrontiers in veterinary science · 2024
    Article

34 more citing papers are in PubMed but not listed here.

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

9 authors at 6 institutions in 1 country.

Michelle H HershProgram in Biology, Bard College, Annandale-on-Hudson, New York, United States of America; Cary Institute of Ecosystem Studies, Millbrook, New York, United States of America.
Richard S OstfeldCary Institute of Ecosystem Studies, Millbrook, New York, United States of America.
Diana J McHenryProgram in Biology, Bard College, Annandale-on-Hudson, New York, United States of America.
Michael TibbettsProgram in Biology, Bard College, Annandale-on-Hudson, New York, United States of America.
Jesse L BrunnerSchool of Biological Sciences, Washington State University, Pullman, Washington, United States of America.
Mary E KillileaDepartment of Environmental Studies, New York University, New York, New York, United States of America.
Kathleen LoGiudiceDepartment of Biology, Union College, Schenectady, New York, United States of America.
Kenneth A SchmidtDepartment of Biological Sciences, Texas Tech University, Lubbock, Texas, United States of America.
Felicia KeesingProgram in Biology, Bard College, Annandale-on-Hudson, New York, United States of America.
Bard College · USCary Institute of Ecosystem Studies · USNew York University · USTexas Tech University · USUnion College · USWashington State University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Humans in the northeastern and midwestern United States are at increasing risk of acquiring tickborne diseases--not only Lyme disease, but also two emerging diseases, human granulocytic anaplasmosis and human babesiosis. Co-infection with two or more of these pathogens can increase the severity of health impacts. The risk of co-infection is intensified by the ecology of these three diseases because all three pathogens (Borrelia burgdorferi, Anaplasma phagocytophilum, and Babesia microti) are transmitted by the same vector, blacklegged ticks (Ixodes scapularis), and are carried by many of the same reservoir hosts. The risk of exposure to multiple pathogens from a single tick bite and the sources of co-infected ticks are not well understood. In this study, we quantify the risk of co-infection by measuring infection prevalence in 4,368 questing nymphs throughout an endemic region for all three diseases (Dutchess County, NY) to determine if co-infections occur at frequencies other than predicted by independent assortment of pathogens. Further, we identify sources of co-infection by quantifying rates of co-infection on 3,275 larval ticks fed on known hosts. We find significant deviations of levels of co-infection in questing nymphs, most notably 83% more co-infection with Babesia microti and Borrelia burgdorferi than predicted by chance alone. Further, this pattern of increased co-infection was observed in larval ticks that fed on small mammal hosts, but not on meso-mammal, sciurid, or avian hosts. Co-infections involving A. phagocytophilum were less common, and fewer co-infections of A. phagocytophilum and B. microti than predicted by chance were observed in both questing nymphs and larvae fed on small mammals. Medical practitioners should be aware of the elevated risk of B. microti/B. burgdorferi co-infection.

Indexed as

AnimalsArachnid VectorsBabesia microtiBabesiosisBorrelia burgdorferiCoinfectionHost-Parasite InteractionsHumansIxodesLyme Disease

Identifiers

PMID24940999
PMCPMC4062422
OpenAlexW2015185353

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.