Evidence map›Paper›PMID 33737710›Full record

ArticleScientific reports2021

Molecular and epidemiologic characterization of the diphtheria outbreak in Venezuela.

Ricardo A Strauss, Laura Herrera-Leon, Ana C Guillén, Julio S Castro, Eva Lorenz, Ana Carvajal, Elizabeth Hernandez, Trina Navas, Silvana Vielma, Neiris Lopez and 13 more

Abstract read
In one paragraph

Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing 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

11 citing papers in PubMed.

  1. Article
  2. Review
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Multidrug-resistant toxigenicMicrobial genomics · 2023
    Article
  10. Interactions between the Re-Emerging PathogenInternational journal of molecular sciences · 2022
    Review
  11. 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

23 authors.

Ricardo A StraussBernhard Nocht Institute for Tropical Medicine, Hamburg, Germany. ricardo.strauss@bnitm.de.
Laura Herrera-LeonInstituto de Salud Carlos III, Madrid, Spain.
Ana C GuillénHospital José María Vargas, Caracas, Venezuela.
Julio S CastroInstituto de Medicina Tropical, Universidad Central de Venezuela, Caracas, Venezuela.
Eva LorenzBernhard Nocht Institute for Tropical Medicine, Hamburg, Germany.
Ana CarvajalHospital Universitario de Caracas, Caracas, Venezuela.
Elizabeth HernandezHospital Universitario de Caracas, Caracas, Venezuela.
Trina NavasHospital General Los Magallanes de Catia, Caracas, Venezuela.
Silvana VielmaHospital Universitario de Los Andes, Mérida, Venezuela.
Neiris LopezHospital Raúl Leoni, Ciudad Guayana, Venezuela.
Maria G LopezHospital de Niños José Manuel de Los Ríos, Caracas, Venezuela.
Lisbeth AurentyHospital de Niños José Manuel de Los Ríos, Caracas, Venezuela.
Valeria NavasHospital Universitario de Maracaibo, Maracaibo, Venezuela.
Maria A RosasCiudad Hospitalaria Dr Henrique Tejera, Carabobo, Venezuela.
Tatiana DrummondHospital Universitario de Caracas, Caracas, Venezuela.
José G MartínezHospital Universitario de Caracas, Caracas, Venezuela.
Erick HernándezHospital Universitario de Los Andes, Mérida, Venezuela.
Francis BertugliaCentro Clinico-Materno Leopoldo Aguerrevere, Caracas, Venezuela.
Omaira AndradeCentro Clinico-Materno Leopoldo Aguerrevere, Caracas, Venezuela.
Jaime TorresInstituto de Medicina Tropical, Universidad Central de Venezuela, Caracas, Venezuela.
Jürgen MayBernhard Nocht Institute for Tropical Medicine, Hamburg, Germany.
Silvia Herrera-LeonInstituto de Salud Carlos III, Madrid, Spain.
Daniel EibachBernhard Nocht Institute for Tropical Medicine, Hamburg, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In 2016, Venezuela faced a large diphtheria outbreak that extended until 2019. Nasopharyngeal or oropharyngeal samples were prospectively collected from 51 suspected cases and retrospective data from 348 clinical records was retrieved from 14 hospitals between November 2017 and November 2018. Confirmed pathogenic Corynebactrium isolates were biotyped. Multilocus Sequence Typing (MLST) was performed followed by next-generation-based core genome-MLST and minimum spanning trees were generated. Subjects between 10 and 19 years of age were mostly affected (n = 95; 27.3%). Case fatality rates (CFR) were higher in males (19.4%), as compared to females (15.8%). The highest CFR (31.1%) was observed among those under 5, followed by the 40 to 49 age-group (25.0%). Nine samples corresponded to C. diphtheriae and 1 to C. ulcerans. Two Sequencing Types (ST), ST174 and ST697 (the latter not previously described) were identified among the eight C. diphtheriae isolates from Carabobo state. Cg-MLST revealed only one cluster also from Carabobo. The Whole Genome Sequencing analysis revealed that the outbreak seemed to be caused by different strains with C. diphtheriae and C. ulcerans coexisting. The reemergence and length of this outbreak suggest vaccination coverage problems and an inadequate control strategy.

Indexed as

PhylogenyAdolescentAdultChildChild, PreschoolCorynebacterium diphtheriaeDiphtheriaDisease OutbreaksFemaleHumansMaleMiddle AgedMultilocus Sequence TypingRetrospective StudiesVenezuelaYoung Adult

Identifiers

PMID33737710
PMCPMC7973433

What OpenQuestion holds

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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.