Evidence map›Paper›PMID 33198750›Full record

ArticleBMC medicine2020

Chlamydia trachomatis transmission between the oropharynx, urethra and anorectum in men who have sex with men: a mathematical model.

Xianglong Xu, Eric P F Chow, Jason J Ong, Christian J P A Hoebe, Zhuoru Zou, Jane S Hocking, Christopher K Fairley, Lei Zhang

Open access · goldAbstract read
In one paragraph

Article in BMC medicine, 2020. 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
1.7field-weighted citation impact, top 16% 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

11 citing papers in PubMed, 24 citations in OpenAlex.

  1. Article
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  7. Article
  8. Incidence and Duration of Pharyngeal Chlamydia Among a Cohort of Men Who Have Sex With Men.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2022
    Article
  9. Review
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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

8 authors at 5 institutions in 3 countries.

Xianglong XuChina Australia Joint Research Center for Infectious Diseases, School of Public Health, Xi'an Jiaotong University Health Science Centre, Xi'an, 710061, Shaanxi, People's Republic of China.
Eric P F ChowMelbourne Sexual Health Centre, Alfred Health, Melbourne, Australia.
Jason J OngChina Australia Joint Research Center for Infectious Diseases, School of Public Health, Xi'an Jiaotong University Health Science Centre, Xi'an, 710061, Shaanxi, People's Republic of China.
Christian J P A HoebeDepartment of Sexual Health, Infectious Diseases and Environmental Health, South Limburg Public Health Service, Heerlen, The Netherlands.
Zhuoru ZouChina Australia Joint Research Center for Infectious Diseases, School of Public Health, Xi'an Jiaotong University Health Science Centre, Xi'an, 710061, Shaanxi, People's Republic of China.
Jane S HockingChina Australia Joint Research Center for Infectious Diseases, School of Public Health, Xi'an Jiaotong University Health Science Centre, Xi'an, 710061, Shaanxi, People's Republic of China.
Christopher K FairleyChina Australia Joint Research Center for Infectious Diseases, School of Public Health, Xi'an Jiaotong University Health Science Centre, Xi'an, 710061, Shaanxi, People's Republic of China.
Lei ZhangChina Australia Joint Research Center for Infectious Diseases, School of Public Health, Xi'an Jiaotong University Health Science Centre, Xi'an, 710061, Shaanxi, People's Republic of China. lei.zhang1@monash.edu.ORCID 0000-0003-2343-084X
Melbourne Sexual Health Centre · AUThe University of Melbourne · AUMaastricht University Medical Centre · NLXi'an Jiaotong University · CNZhengzhou University · CN

Funding

Australian National Health and Medical Research Council (NHMRC) Emerging Leadership Investigator Grant GNT1172873Australian NHMRC Early Career Fellowship APP1104781Australian NHMRC Leadership Investigator Grant GNT1172900Innovative Research Group Project of the National Natural Science Foundation of China (CN) 8191101420Outstanding Young Scholars Funding 3111500001Xi'an Jiaotong University Basic Research and Profession Grant xtr022019003Xi'an Jiaotong University Basic Research and Profession Grant xzy032020032Xi'an Jiaotong University Young Talent Support Grant YX6J004
6 · The paper itself

Abstract

backgroundIt has been presumed that Chlamydia trachomatis is transmitted between men only through anal or oral sex, but no mathematical models have tested this presumption.

methodsTo test this presumption, we created 20 compartmental mathematical models of different sexual practices that included both oral and anal sex and calibrated these models to the observed rates of Chlamydia trachomatis infection at three anatomical sites from 4888 men who have sex with men (MSM) in Melbourne Sexual Health Centre during 2018-2019.

resultsA model that included only oral and anal sex could replicate the observed rates of single-site infection at the oropharynx, urethra and rectum alone, but could not replicate infection at more than one of these sites (multisite). However, if we included transmission from sexual practices that followed one another in the same sexual episode (e.g. saliva contamination of the penis from oral sex transmitting chlamydia to the rectum by anal sex), we significantly improved the calibration of multisite infection rates substantially.

conclusionsOur modelling study suggests that transmission routes other than just oral and anal sex are necessary to explain the high rate of Chlamydia trachomatis infection at more than one site.

Indexed as

Chlamydia InfectionsChlamydia trachomatisHomosexuality, MaleHumansMaleModels, TheoreticalOropharynxRectal DiseasesUrethraAnatomical siteBehavioural interventionsChlamydia trachomatisMen who have sex with menSexual practicesTransmission

Identifiers

PMID33198750
PMCPMC7670797
OpenAlexW3099110651

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.