Evidence map›Paper›PMID 24124606›Full record

ArticlePloS one2013

Genetic analysis of Bordetella pertussis isolates from the 2008-2010 pertussis epidemic in Japan.

Yusuke Miyaji, Nao Otsuka, Hiromi Toyoizumi-Ajisaka, Keigo Shibayama, Kazunari Kamachi

Open access · goldAbstract readHistorical Article
In one paragraph

Article in PloS one, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed
5.0field-weighted citation impact, top 4% 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

37 citing papers in PubMed, 74 citations in OpenAlex.

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  18. Pertactin-deficientEuro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin · 2019
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  19. Genomic epidemiology of IranianEmerging microbes & infections · 2019
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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 2 institutions in 1 country.

Yusuke MiyajiDepartment of Bacteriology II, National Institute of Infectious Diseases, Tokyo, Japan ; Department of Pediatrics, St Marianna University School of Medicine, Kawasaki, Japan.
Nao Otsuka
Hiromi Toyoizumi-Ajisaka
Keigo Shibayama
Kazunari Kamachi
National Institute of Infectious Diseases · JPSt. Marianna University School of Medicine · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

A large pertussis epidemic occurred between 2008 and 2010 in Japan. To investigate epidemic strains, we analyzed 33 Bordetella pertussis isolates from the epidemic period by sequencing virulence-associated genes (fim3, ptxP, ptxA, and prn) and performing multilocus variable-number tandem repeat analysis (MLVA), and compared these results with those of 101 isolates from non-epidemic, earlier and later time periods. DNA sequencing of the fim3 allele revealed that the frequency of fim3B was 4.3%, 12.8%, 30.3%, and 5.1% within isolates in 2002-2004, 2005-2007, 2008-2010, and 2011-2012, respectively. The isolation rate of the fim3B strain therefore temporarily increased during the epidemic period 2008-2010. In contrast, the frequencies of the virulence-associated allelic variants, ptxP3, ptxA1, and prn2, increased with time during overall study period, indicating that these variants were not directly involved in the occurrence of the 2008-2010 epidemic. MLVA genotyping in combination with analysis of allele types showed that the prevalence of an MT27d strain temporarily increased in the epidemic period, and that this strain carried virulence-associated allelic variants (fim3B, ptxP3, ptxA1, and prn2) also identified in recent epidemic strains of Australia, Europe, and the US. Phenotypic analyses revealed that the serotype Fim3 strain was predominant (≥ 87%) during all the periods studied, and that the frequency of adhesion pertactin (Prn) non-expressing B. pertussis decreased by half in the epidemic period. All MT27d strains expressed Prn and Fim3 proteins, suggesting that B. pertussis MT27d strains expressing Prn and Fim3B have the potential to cause large epidemics worldwide.

Indexed as

AllelesBordetella pertussisCluster AnalysisGene FrequencyGenes, BacterialGenetic VariationHistory, 21st CenturyHumansJapanMultilocus Sequence TypingPhenotypePublic Health SurveillanceWhooping Cough

Identifiers

PMID24124606
PMCPMC3790747
OpenAlexW2035930456

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.