Evidence map›Paper›PMID 31753763›Full record

ArticleThe Lancet. Infectious diseases2020

Global and regional estimates of the contribution of herpes simplex virus type 2 infection to HIV incidence: a population attributable fraction analysis using published epidemiological data.

Katharine J Looker, Nicky J Welton, Keith M Sabin, Shona Dalal, Peter Vickerman, Katherine M E Turner, Marie-Claude Boily, Sami L Gottlieb

Open access · hybridAbstract read
In one paragraph

Article in The Lancet. Infectious diseases, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 77 papers, 8 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
77citing papers in PubMed, 8 pooled it
10.9field-weighted citation impact, top 1% 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

77 citing papers in PubMed, 8 syntheses or guidelines pooled it, 151 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Pooled it
  5. Pooled it
  6. Pooled it
  7. Pooled it
  8. Pooled it
  9. Trial
  10. Article
  11. Review
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Review
  19. Review
  20. Article

17 more citing papers are in PubMed but not listed here.

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 4 institutions in 2 countries.

Katharine J LookerPopulation Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK. Electronic address: katharine.looker@bristol.ac.uk.
Nicky J WeltonPopulation Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK.
Keith M SabinUNAIDS, Geneva, Switzerland.
Shona DalalDepartment of HIV/AIDS, WHO, Geneva, Switzerland.
Peter VickermanPopulation Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK.
Katherine M E TurnerBristol Veterinary School, University of Bristol, Bristol, UK.
Marie-Claude BoilyMRC Centre for Global Infectious Disease Analysis, Department of Infectious Disease Epidemiology, Imperial College London, London, UK.
Sami L GottliebDepartment of Reproductive Health and Research, WHO, Geneva, Switzerland.
University of Bristol · GBJoint United Nations Programme on HIV/AIDS · CHLondon Centre for Neglected Tropical Disease Research · GBWorld Health Organization · CH

Funding

Enhanced collaboration between US NIH and WHO on biomedical researchU01AI108543 · NIAID · WORLD HEALTH ORGANIZATION · PI TROEDSSON, HANS · 2013 to 2018
$3.7M
Medical Research Council G0802413Medical Research Council MR/R015600/1NIAID NIH HHS U01 AI108543World Health Organization 001
6 · The paper itself

Abstract

backgroundA 2017 systematic review and meta-analysis of 55 prospective studies found the adjusted risk of HIV acquisition to be at least tripled in individuals with herpes simplex virus type 2 (HSV-2) infection. We aimed to assess the potential contribution of HSV-2 infection to HIV incidence, given an effect of HSV-2 on HIV acquisition.

methodsWe used a classic epidemiological formula to estimate the global and regional (WHO regional) population attributable fraction (PAF) and number of incident HIV infections attributable to HSV-2 infection by age (15-24 years, 25-49 years, and 15-49 years), sex, and timing of HSV-2 infection (established vs recently acquired). Estimates were calculated by incorporating HSV-2 and HIV infection data with pooled relative risk (RR) estimates for the effect of HSV-2 infection on HIV acquisition from a systematic review and meta-analysis. Because HSV-2 and HIV have shared sexual and other risk factors, in addition to HSV-related biological factors that increase HIV risk, we only used RR estimates that were adjusted for potential confounders.

findingsAn estimated 420 000 (95% uncertainty interval 317 000-546 000; PAF 29·6% [22·9-37·1]) of 1·4 million sexually acquired incident HIV infections in individuals aged 15-49 years in 2016 were attributable to HSV-2 infection. The contribution of HSV-2 to HIV was largest for the WHO African region (PAF 37·1% [28·7-46·3]), women (34·8% [23·5-45·0]), individuals aged 25-49 years (32·4% [25·4-40·2]), and established HSV-2 infection (26·8% [19·7-34·5]).

interpretationA large burden of HIV is likely to be attributable to HSV-2 infection, even if the effect of HSV-2 infection on HIV had been imperfectly measured in studies providing adjusted RR estimates, potentially because of residual confounding. The contribution is likely to be greatest in areas where HSV-2 is highly prevalent, particularly Africa. New preventive interventions against HSV-2 infection could not only improve the quality of life of millions of people by reducing the prevalence of herpetic genital ulcer disease, but could also have an additional, indirect effect on HIV transmission.

fundingWHO.

Indexed as

AdolescentAdultFemaleHerpes GenitalisHerpes SimplexHerpesvirus 2, HumanHIV InfectionsHumansIncidenceMaleMiddle AgedPrevalenceProspective StudiesQuality of LifeRisk FactorsSexual Behavior

Identifiers

PMID31753763
PMCPMC6990396
OpenAlexW2980883916

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.