Evidence map›Paper›PMID 31604442›Full record

ArticleParasites & vectors2019

A human case of spotted fever caused by Rickettsia parkeri strain Atlantic rainforest and its association to the tick Amblyomma ovale.

Anaiá da Paixão Sevá, Thiago Fernandes Martins, Sebastián Muñoz-Leal, Ana Carla Rodrigues, Adriano Pinter, Hermes R Luz, Rodrigo N Angerami, Marcelo B Labruna

Open access · goldAbstract readCase Reports
In one paragraph

Article in Parasites & vectors, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
6.0field-weighted citation impact, top 3% 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

27 citing papers in PubMed, 64 citations in OpenAlex.

  1. Review
  2. Ticks on wild vertebrates necropsied in a veterinary pathology service in central Brazil: species richness and pathogen screening.Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria · 2026
    Article
  3. Amblyomma ovale.Trends in parasitology · 2025
    Article
  4. Animals : an open access journal from MDPI · 2025
    Article
  5. Article
  6. Article
  7. Serological and Molecular Survey of Rickettsial Agents in Wild Boars (Animals : an open access journal from MDPI · 2024
    Article
  8. Article
  9. Article
  10. Eco-epidemiological analysis of Rickettsia parkeri in domestic dogs and Amblyomma ovale ticks in the Atlantic rainforest of Northeast Brazil.Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria · 2024
    Article
  11. Ticks (Acari: Ixodidae) and tick-borne agents associated with domestic dogs in an environmental protection area in Brazil, with molecular evidence of Rhipicephalus linnaei (Audouin, 1826).Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria · 2024
    Article
  12. Article
  13. Detection ofAnimals : an open access journal from MDPI · 2023
    Article
  14. Diversity of rickettsiae in ticks (Acari: Ixodidae) collected from wild vertebrates in part of the Amazon, Cerrado, and Pantanal biomes in Brazil.Revista brasileira de parasitologia veterinaria = Brazilian journal of veterinary parasitology : Orgao Oficial do Colegio Brasileiro de Parasitologia Veterinaria · 2023
    Article
  15. Article
  16. Article
  17. Article
  18. Rickettsiosis Caused by Rickettsia parkeri, Mexico.Emerging infectious diseases · 2022
    Article
  19. A new focus of spotted fever caused by Rickettsia parkeri in Brazil.Revista do Instituto de Medicina Tropical de Sao Paulo · 2022
    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

8 authors at 5 institutions in 1 country.

Anaiá da Paixão SeváUniversidade Estadual de Santa Cruz, Ilhéus, BA, Brazil.
Thiago Fernandes MartinsDepartamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, SP, Brazil.
Sebastián Muñoz-LealDepartamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, SP, Brazil.
Ana Carla RodriguesUniversidade do Estado de Mato Grosso, Campus Nova Xavantina, Nova Xavantina, MT, Brazil.
Adriano PinterSuperintendência de Controle de Endemias do Estado de São Paulo, São Paulo, SP, Brazil.
Hermes R LuzDepartamento de Patologia, RENORBIO, Universidade Federal do Maranhão, São Luís, MA, Brazil.
Rodrigo N AngeramiHospital das Clínicas, Universidade Estadual de Campinas, Campinas, SP, Brazil.
Marcelo B LabrunaDepartamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, SP, Brazil. labruna@usp.br.ORCID http://orcid.org/0000-0002-9675-3132
Universidade de São Paulo · BRUniversidade do Estado de Mato Grosso · BRUniversidade Estadual de Campinas (UNICAMP) · BRUniversidade Estadual de Santa Cruz · BRUniversidade Federal do Maranhão · BR

Funding

Conselho Nacional de Desenvolvimento Científico e Tecnológico 305872/2013-3Coordenação de Aperfeiçoamento de Pessoal de Nível Superior Finance Code 001Fundação de Amparo à Pesquisa do Estado de São Paulo 2018/02521-1
6 · The paper itself

Abstract

backgroundRickettsia parkeri strain Atlantic rainforest has emerged in Brazil during the last 10 years, with three laboratory-confirmed human cases. While these cases were epidemiologically associated with the tick Amblyomma ovale, in none of them the tick specimens that bit the patients could be identified.

resultsWe report a clinical case of spotted fever rickettsiosis that was acquired in an Atlantic forest area in Bahia state, northeast Brazil. The case was determined to be caused by R. parkeri strain Atlantic rainforest, based on molecular analysis of the crust removed from the tick bite site (inoculation eschar) of the patients' skin. DNA extracted from the crust yielded partial sequences of three rickettsial genes (gltA, ompA and ompB), which were 99-100% identical to R. parkeri strain Atlantic rainforest. The tick specimen that was attached to patient skin was identified as a female of A. ovale.

conclusionsWe report the fourth confirmed case of spotted fever rickettsiosis caused by R. parkeri strain Atlantic rainforest, providing to our knowledge for the first time, direct evidence of R. parkeri strain Atlantic rainforest transmission by A. ovale.

Indexed as

AdultBackBrazilDNA, BacterialFemaleHumansRainforestRickettsiaRocky Mountain Spotted FeverTick BitesDNA, BacterialAmblyomma ovaleBahiaInoculation escharRickettsia parkeri

Identifiers

PMID31604442
PMCPMC6790035
OpenAlexW2979593998

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.