Evidence map›Paper›PMID 18433500›Full record

ArticleBMC infectious diseases2008

Geographic distribution and genetic diversity of the Ehrlichia sp. from Panola Mountain in Amblyomma americanum.

Amanda D Loftis, Tonya R Mixson, Ellen Y Stromdahl, Michael J Yabsley, Laurel E Garrison, Phillip C Williamson, Robert R Fitak, Paul A Fuerst, Daryl J Kelly, Keith W Blount

Abstract read
In one paragraph

Article in BMC infectious diseases, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing 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

24 citing papers in PubMed.

  1. Article
  2. Survey of tick-borne pathogens inCurrent research in parasitology & vector-borne diseases · 2025
    Article
  3. Review
  4. Detection ofVector borne and zoonotic diseases (Larchmont, N.Y.) · 2023
    Article
  5. Article
  6. Tick species infesting humans in the United States.Ticks and tick-borne diseases · 2022
    Review
  7. Review
  8. Article
  9. Experimental Infection of North American Sheep withPathogens (Basel, Switzerland) · 2021
    Article
  10. The Unexpected Holiday Souvenir: The Public Health Risk to UK Travellers from Ticks Acquired Overseas.International journal of environmental research and public health · 2020
    Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Review
  16. Article
  17. Article
  18. Article
  19. Article
  20. 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

10 authors.

Amanda D LoftisCenters for Disease Control and Prevention, Atlanta, GA 30333, USA. adloftis@gmail.com
Tonya R Mixson
Ellen Y Stromdahl
Michael J Yabsley
Laurel E Garrison
Phillip C Williamson
Robert R Fitak
Paul A Fuerst
Daryl J Kelly
Keith W Blount

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundA novel Ehrlichia, closely related to Ehrlichia ruminantium, was recently discovered from Panola Mountain State Park, GA, USA. We conducted a study to determine if this agent was recently introduced into the United States.

methodsWe developed a sensitive PCR assay based on the conserved gltA (citrate synthase) gene and tested DNA samples extracted from 1964 field-collected and 1835 human-biting Amblyomma americanum from 23 eastern states of the USA.

resultsThe novel agent was detected in 36 ticks collected from 10 states between 1998 and 2006. Infected ticks were collected both from vegetation (n = 14, 0.7%) and from humans (n = 22, 1.2%). Fragments of the conserved gltA gene and the variable map1 gene were sequenced from positive samples. Two distinct clades, with 10.5% nucleic acid divergence over the 730 bp map1 sequence, were identified.

conclusionThese data suggest that the Panola Mountain Ehrlichia was not recently introduced to the United States; this agent has an extensive distribution throughout the range of its tick vector, has been present in some locations for several years, and displays genetic variability. Furthermore, people in several states were exposed to this agent through the bite of infected ticks, underscoring the potential public health risk of this emerging ehrlichiosis.

Indexed as

Genetic VariationAnimalsAntigens, BacterialBacterial ProteinsCitrate (si)-SynthaseDNA, BacterialEhrlichiaGeographyGeorgiaHumansIxodidaeMembrane ProteinsMolecular Sequence DataPhylogenyPolymerase Chain ReactionSequence Analysis, DNAAntigens, BacterialBacterial ProteinsCitrate (si)-SynthaseDNA, BacterialMembrane Proteins

Identifiers

PMID18433500
PMCPMC2394526

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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.