Evidence map›Paper›PMID 35403676›Full record

ArticleClinical infectious diseases : an official publication of the Infectious Diseases Society of America2023

Overall Vertical Transmission of Hepatitis C Virus, Transmission Net of Clearance, and Timing of Transmission.

Anthony E Ades, Fabiana Gordon, Karen Scott, Intira J Collins, Thorne Claire, Lucy Pembrey, Elizabeth Chappell, Eugènia Mariné-Barjoan, Karina Butler, Giuseppe Indolfi and 2 more

Open access · hybridAbstract read
In one paragraph

Article in Clinical infectious diseases : an official publication of the Infectious Diseases Society of America, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 1 pooled it
4.0field-weighted citation impact, top 5% 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

18 citing papers in PubMed, 1 synthesis or guideline pooled it, 32 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Gaps in the Hepatitis C Prenatal and Postpartum Care Cascade: Rationale for Treatment in Pregnancy.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2026
    Article
  4. Article
  5. Article
  6. Hepatitis C virus in childhood and pregnancy.Infectious diseases & immunity · 2025
    Review
  7. Update on Pediatric Hepatitis C Infection.Current gastroenterology reports · 2025
    Review
  8. Review
  9. Racial and Ethnic Disparities in Hepatitis C Care in Reproductive-Aged Women With Opioid Use Disorder.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2024
    Article
  10. Article
  11. Pathogenesis of viral infections during pregnancy.Clinical microbiology reviews · 2024
    Review
  12. Article
  13. Article
  14. CDC Recommendations for Hepatitis C Testing Among Perinatally Exposed Infants and Children - United States, 2023.MMWR. Recommendations and reports : Morbidity and mortality weekly report. Recommendations and reports · 2023
    Article
  15. Article
  16. Article
  17. Spontaneous Clearance of Vertically Acquired Hepatitis C Infection: Implications for Testing and Treatment.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2023
    Article
  18. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

12 authors at 7 institutions in 4 countries.

Anthony E AdesPopulation Health Sciences, University of Bristol Medical School, Bristol, United Kingdom.ORCID 0000-0001-7822-3552
Fabiana GordonPopulation Health Sciences, University of Bristol Medical School, Bristol, United Kingdom.
Karen ScottMedical Research Council Clinical Trials Unit, University College London, London, United Kingdom.
Intira J CollinsMedical Research Council Clinical Trials Unit, University College London, London, United Kingdom.
Thorne ClairePopulation, Policy and Practice Research and Teaching Department, UCL Great Ormond Street Institute of Child Health, London, United Kingdom.
Lucy PembreyDepartment of Medical Statistics, Faculty of Epidemiology and Population Health, London School of Hygiene and Tropical Medicine, London, United Kingdom.ORCID 0000-0002-0455-7469
Elizabeth ChappellMedical Research Council Clinical Trials Unit, University College London, London, United Kingdom.
Eugènia Mariné-BarjoanUniversité Côte d'Azur, Public Health Department, Centre Hospitalier Universitaire de Nice, Nice, France.
Karina ButlerChildren's Health Ireland at Crumlin and Temple Street, Dublin, Ireland.
Giuseppe IndolfiMeyer Children's Hospital and Department Neurofarba, University of Florence, Firenze, Italy.
Diana M GibbMedical Research Council Clinical Trials Unit, University College London, London, United Kingdom.
Ali JuddMedical Research Council Clinical Trials Unit, University College London, London, United Kingdom.
University College London · GBUniversity of Bristol · GBChildren's Health Ireland at Crumlin · IEGreat Ormond Street Hospital · GBLondon School of Hygiene & Tropical Medicine · GBMeyer Children's Hospital · ITUniversité Côte d'Azur · FR

Funding

Medical Research Council MC_UU_00004/03Medical Research Council MC_UU_12023/26Medical Research Council MR/R019746/1
6 · The paper itself

Abstract

backgroundIt is widely accepted that the risk of hepatitis C virus (HCV) vertical transmission (VT) is 5%-6% in monoinfected women, and that 25%-40% of HCV infection clears spontaneously within 5 years. However, there is no consensus on how VT rates should be estimated, and there is a lack of information on VT rates "net" of clearance.

methodsWe reanalyzed data on 1749 children in 3 prospective cohorts to obtain coherent estimates of overall VT rate and VT rates net of clearance at different ages. Clearance rates were used to impute the proportion of uninfected children who had been infected and then cleared before testing negative. The proportion of transmission early in utero, late in utero, and at delivery was estimated from data on the proportion of HCV RNA positive within 3 days of birth, and differences between elective cesarean and nonelective cesarean deliveries.

resultsOverall VT rates were 7.2% (95% credible interval [CrI], 5.6%-8.9%) in mothers who were human immunodeficiency virus (HIV) negative and 12.1% (95% CrI, 8.6%-16.8%) in HIV-coinfected women. The corresponding rates net of clearance at 5 years were 2.4% (95% CrI, 1.1%-4.1%), and 4.1% (95% CrI, 1.7%-7.3%). We estimated that 24.8% (95% CrI, 12.1%-40.8%) of infections occur early in utero, 66.0% (95% CrI, 42.5%-83.3%) later in utero, and 9.3% (95% CrI, 0.5%-30.6%) during delivery.

conclusionsOverall VT rates are about 24% higher than previously assumed, but the risk of infection persisting beyond age 5 years is about 38% lower. The results can inform design of trials of interventions to prevent or treat pediatric HCV infection, and strategies to manage children exposed in utero.

Indexed as

Hepatitis CHIV InfectionsPregnancy Complications, InfectiousChildChild, PreschoolFemaleHepacivirusHumansPregnancyProspective StudiesRisk FactorsHCVhepatitis C virusnet transmissionspontaneous clearancevertical transmission

Identifiers

PMID35403676
PMCPMC9989130
OpenAlexW4225690381

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.