Evidence map›Paper›PMID 28845800›Full record

ArticleThe Lancet. Infectious diseases2017

Symptomatic dengue infection during pregnancy and the risk of stillbirth in Brazil, 2006-12: a matched case-control study.

Enny S Paixão, Maria da Conceição N Costa, Maria Glória Teixeira, Katie Harron, Marcia Furquim de Almeida, Mauricio L Barreto, Laura C Rodrigues

Open access · greenAbstract read
In one paragraph

Article in The Lancet. Infectious diseases, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 1 pooled it
10.2field-weighted citation impact, top 2% 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

19 citing papers in PubMed, 1 synthesis or guideline pooled it, 47 citations in OpenAlex.

  1. Burden of Dengue in Pregnant Individuals: A Systematic Literature Review.The American journal of tropical medicine and hygiene · 2026
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  19. Vector-borne diseases in pregnancy.Therapeutic advances in infectious disease
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors at 3 institutions in 2 countries.

Enny S PaixãoLondon School of Hygiene & Tropical Medicine, London, UK; Instituto de Saúde Coletiva, Salvador, Bahia, Brazil; Center of Data and Knowledge Integration for Health (CIDACS), Instituto Gonçalo Moniz, Salvador, Bahia, Brazil. Electronic address: enny.cruz@lshtm.ac.uk.
Maria da Conceição N CostaInstituto de Saúde Coletiva, Salvador, Bahia, Brazil.
Maria Glória TeixeiraInstituto de Saúde Coletiva, Salvador, Bahia, Brazil; Center of Data and Knowledge Integration for Health (CIDACS), Instituto Gonçalo Moniz, Salvador, Bahia, Brazil.
Katie HarronLondon School of Hygiene & Tropical Medicine, London, UK.
Marcia Furquim de AlmeidaUniversidade de São Paulo, São Paulo, Brazil.
Mauricio L BarretoCenter of Data and Knowledge Integration for Health (CIDACS), Instituto Gonçalo Moniz, Salvador, Bahia, Brazil; Universidade de São Paulo, São Paulo, Brazil.
Laura C RodriguesLondon School of Hygiene & Tropical Medicine, London, UK; Center of Data and Knowledge Integration for Health (CIDACS), Instituto Gonçalo Moniz, Salvador, Bahia, Brazil.
London School of Hygiene & Tropical Medicine · GBInstituto de Saúde · BRUniversidade de São Paulo · BR

Funding

Wellcome Trust 103975Wellcome Trust 201870Wellcome Trust 205377
6 · The paper itself

Abstract

backgroundMaternal infections during pregnancy can increase the risk of fetal death. Dengue infection is common, but little is known about its role in fetal mortality. We aimed to investigate the association between symptomatic dengue infection during pregnancy and fetal death.

methodsWe did a nested case-control study using obstetrician-collected data from the Brazilian livebirth information system (SINASC), the mortality information system (SIM), and the national reportable disease information system (SINAN). We identified all pregnancies ending in stillbirth and a random sample of livebirths between Jan 1, 2006, and Dec 31, 2012. We did linkage to determine which mothers were diagnosed with dengue infection during pregnancy. By use of stillbirths as cases and a sample of matched livebirths as a control, we calculated matched odds ratios (mORs) using conditional logistic regression adjusted for maternal age and education.

findings275 (0·2%) of 162 188 women who had stillbirths and 1507 (0·1%) of 1 586 105 women who had livebirths were diagnosed with dengue infection during pregnancy. Symptomatic dengue infection during pregnancy almost doubled the odds of fetal death (mOR 1·9, 95% CI 1·6-2·2). The increase in risk was similar when analyses were restricted to laboratory-confirmed cases of dengue infection (1·8, 1·4-2·4). Severe dengue infection increased the risk of fetal death by about five times (4·9, 2·3-10·2).

interpretationSymptomatic dengue infection during pregnancy is associated with an increased risk of fetal death. We recommend further epidemiological and biological studies of the association between dengue and poor birth outcomes to measure the burden of subclinical infections and elucidate pathological mechanisms.

fundingBrazilian National Council for Scientific and Technological Development, Horizon 2020.

Indexed as

Case-Control StudiesPregnancy Complications, InfectiousPregnancy OutcomeAdultBrazilDengueFemaleFetal DeathHumansInfant, NewbornPregnancyRetrospective StudiesRisk FactorsStillbirth

Identifiers

PMID28845800
PMCPMC6205624
OpenAlexW2748587636

What OpenQuestion holds

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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.