Evidence map›Paper›PMID 28604825›Full record

Observational studyPLoS neglected tropical diseases2017

Burden and impact of Plasmodium vivax in pregnancy: A multi-centre prospective observational study.

Azucena Bardají, Flor Ernestina Martínez-Espinosa, Myriam Arévalo-Herrera, Norma Padilla, Swati Kochar, Maria Ome-Kaius, Camila Bôtto-Menezes, María Eugenia Castellanos, Dhanpat Kumar Kochar, Sanjay Kumar Kochar and 18 more

Open access · goldAbstract readMulticenter StudyObservational Study
In one paragraph

Observational study in PLoS neglected tropical diseases, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 51 papers, 6 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
51citing papers in PubMed, 6 pooled it
8.4field-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

51 citing papers in PubMed, 6 syntheses or guidelines pooled it, 71 citations in OpenAlex.

  1. Pooled it
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  4. Prevalence of Pregnancy Associated Malaria in India.Frontiers in global women's health · 2022
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  14. Current update on malaria in pregnancy: a systematic review.Tropical diseases, travel medicine and vaccines · 2025
    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

28 authors at 13 institutions in 10 countries.

Azucena BardajíBarcelona Center for International Health Research, CRESIB, ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain.ORCID http://orcid.org/0000-0002-5135-0540
Flor Ernestina Martínez-EspinosaGerência de Malária, Fundação de Medicina Tropical Dr. Heitor Vieira Dourado, Manaus, Brazil.
Myriam Arévalo-HerreraCaucaseco Scientific Research Center/Universidad del Valle, Cali, Colombia.
Norma PadillaCentro de Estudios en Salud, Universidad del Valle de Guatemala, Guatemala, Guatemala.
Swati KocharDepartment of Medicine, Sardar Patel Medical College, Bikaner, Rajasthan, India.
Maria Ome-KaiusPapua New Guinea Institute of Medical Research, Madang, Madang Province, Papua New Guinea.
Camila Bôtto-MenezesGerência de Malária, Fundação de Medicina Tropical Dr. Heitor Vieira Dourado, Manaus, Brazil.
María Eugenia CastellanosCentro de Estudios en Salud, Universidad del Valle de Guatemala, Guatemala, Guatemala.
Dhanpat Kumar KocharDepartment of Medicine, Sardar Patel Medical College, Bikaner, Rajasthan, India.
Sanjay Kumar KocharDepartment of Medicine, Sardar Patel Medical College, Bikaner, Rajasthan, India.
Inoni BetuelaPapua New Guinea Institute of Medical Research, Madang, Madang Province, Papua New Guinea.
Ivo MuellerBarcelona Center for International Health Research, CRESIB, ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain.
Stephen RogersonDepartment of Medicine (Royal Melbourne Hospital), The University of Melbourne, Parkville, Victoria, Australia.
Chetan ChitnisInternational Center for Genetic Engineering and Biotechnology, New Delhi, India.
Dhiraj HansInternational Center for Genetic Engineering and Biotechnology, New Delhi, India.
Michela MenegonDepartment of Infectious, Parasitic and Immunomediated Diseases, Istituto Superiore di Sanità, Rome, Italy.
Carlo SeveriniDepartment of Infectious, Parasitic and Immunomediated Diseases, Istituto Superiore di Sanità, Rome, Italy.
Hernando Del PortilloBarcelona Center for International Health Research, CRESIB, ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain.
Carlota DobañoBarcelona Center for International Health Research, CRESIB, ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain.
Alfredo MayorBarcelona Center for International Health Research, CRESIB, ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain.
Jaume OrdiBarcelona Center for International Health Research, CRESIB, ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain.
Mireia PiquerasBarcelona Center for International Health Research, CRESIB, ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain.
Sergi SanzBarcelona Center for International Health Research, CRESIB, ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain.
Mats WahlgrenKarolinska Institute, Stockholm, Sweden.
Laurence SlutskerMalaria Branch, Division of Parasitic Diseases and Malaria, Center for Global Health, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America.
Meghna DesaiMalaria Branch, Division of Parasitic Diseases and Malaria, Center for Global Health, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America.
Clara MenéndezBarcelona Center for International Health Research, CRESIB, ISGlobal, Hospital Clínic - Universitat de Barcelona, Barcelona, Spain.
PregVax Study Group
Barcelona Institute for Global Health · ESSardar Patel Medical College · INCenters for Disease Control and Prevention · USFundação de Medicina Tropical · BRInternational Centre for Genetic Engineering and Biotechnology · INIstituto Superiore di Sanità · ITPapua New Guinea Institute of Medical Research · PGUniversidad del Valle de Guatemala · GTCaucaseco Scientific Research Center · COInstitució Catalana de Recerca i Estudis Avançats · ESKarolinska Institutet · SEThe Royal Melbourne Hospital · AUWalter and Eliza Hall Institute of Medical Research · AU

Funding

Vector Biology Research and Integrated Vector Management For Malaria ControlU19AI089702 · NIAID · CAUCASECO SCIENTIFIC RESEARCH CENTER · PI AREVALO-HERRERA, MYRIAM · 2010 to 2016
$11.5M
NIAID NIH HHS U19 AI089702
6 · The paper itself

Abstract

backgroundDespite that over 90 million pregnancies are at risk of Plasmodium vivax infection annually, little is known about the epidemiology and impact of the infection in pregnancy. METHODOLOGY AND PRINCIPAL

findingsWe undertook a health facility-based prospective observational study in pregnant women from Guatemala (GT), Colombia (CO), Brazil (BR), India (IN) and Papua New Guinea PNG). Malaria and anemia were determined during pregnancy and fetal outcomes assessed at delivery. A total of 9388 women were enrolled at antennal care (ANC), of whom 53% (4957) were followed until delivery. Prevalence of P. vivax monoinfection in maternal blood at delivery was 0.4% (20/4461) by microscopy [GT 0.1%, CO 0.5%, BR 0.1%, IN 0.2%, PNG 1.2%] and 7% (104/1488) by PCR. P. falciparum monoinfection was found in 0.5% (22/4463) of women by microscopy [GT 0%, CO 0.5%, BR 0%, IN 0%, PNG 2%]. P. vivax infection was observed in 0.4% (14/3725) of placentas examined by microscopy and in 3.7% (19/508) by PCR. P. vivax in newborn blood was detected in 0.02% (1/4302) of samples examined by microscopy [in cord blood; 0.05% (2/4040) by microscopy, and 2.6% (13/497) by PCR]. Clinical P. vivax infection was associated with increased risk of maternal anemia (Odds Ratio-OR, 5.48, [95% CI 1.83-16.41]; p = 0.009), while submicroscopic vivax infection was not associated with increased risk of moderate-severe anemia (Hb<8g/dL) (OR, 1.16, [95% CI 0.52-2.59]; p = 0.717), or low birth weight (<2500g) (OR, 0.52, [95% CI, 0.23-1.16]; p = 0.110).

conclusionsIn this multicenter study, the prevalence of P. vivax infection in pregnancy by microscopy was overall low across all endemic study sites; however, molecular methods revealed a significant number of submicroscopic infections. Clinical vivax infection in pregnancy was associated with maternal anemia, which may be deleterious for infant's health. These results may help to guide maternal health programs in settings where vivax malaria is endemic; they also highlight the need of addressing a vulnerable population such as pregnant women while embracing malaria elimination in endemic countries.

Indexed as

Plasmodium vivaxAdolescentAdultBrazilColombiaFemaleFetal BloodGuatemalaHumansIndiaInfant, NewbornInfectious Disease Transmission, VerticalMalaria, VivaxPapua New GuineaPregnancyPregnancy Complications, Parasitic

Identifiers

PMID28604825
PMCPMC5481034
OpenAlexW2625283599

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.