Evidence map›Paper›PMID 26822406›Full record

ArticleMalaria journal2016

Plasmodium vivax gametocyte infectivity in sub-microscopic infections.

Andrés F Vallejo, Jhon García, Andrés B Amado-Garavito, Myriam Arévalo-Herrera, Sócrates Herrera

Open access · goldAbstract read
In one paragraph

Article in Malaria journal, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 66 papers.

0numbers the graph read from it
0cells of the map it votes in
66citing papers in PubMed
11.8field-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

66 citing papers in PubMed, 99 citations in OpenAlex.

  1. Trial
  2. Article
  3. Article
  4. Asymptomatic/submicroscopicParasite epidemiology and control · 2025
    Article
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  7. Article
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  10. Monitoring the density of3 Biotech · 2023
    Article
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  14. Review
  15. Traditional Beliefs, Practices, and Migration: A Risk to Malaria Transmission in Rural Nepal.International journal of environmental research and public health · 2022
    Article
  16. Article
  17. Article
  18. Article
  19. A systematic review and meta-analysis on sub-microscopicThe Lancet regional health. Southeast Asia · 2022
    Article
  20. Article

6 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

5 authors at 1 institution in 1 country.

Andrés F VallejoMalaria Vaccine and Drug Development Centre (MVDC), Cali, Colombia. avallejo@inmuno.org.
Jhon GarcíaMalaria Vaccine and Drug Development Centre (MVDC), Cali, Colombia. jgarcia@inmuno.org.
Andrés B Amado-GaravitoMalaria Vaccine and Drug Development Centre (MVDC), Cali, Colombia. amado@inmuno.org.
Myriam Arévalo-HerreraCaucaseco Scientific Research Centre (CSRC)/Centro Latino Americano de Investigación en Malaria (CLAIM), Cali, Colombia. marevalo@inmuno.org.
Sócrates HerreraMalaria Vaccine and Drug Development Centre (MVDC), Cali, Colombia. sherrera@inmuno.org.
Caucaseco Scientific Research Center · CO

Funding

Vector Biology Research and Integrated Vector Management For Malaria ControlU19AI089702 · NIAID · CAUCASECO SCIENTIFIC RESEARCH CENTER · PI QUINONES, MARTHA · 2010 to 2016
$11.5M
Development of a P. vivax immunization and sporozoite challenge model for humanR01HL086488 · NHLBI · MALARIA VACCINE DEVELOPMENT CENTER · PI HERRERA, SOCRATES · 2008 to 2011
$1.2M
NHLBI NIH HHS HL086488-01A2NHLBI NIH HHS R01 HL086488NIAID NIH HHS U19 AI089702NIAID NIH HHS U19AI089702
6 · The paper itself

Abstract

backgroundThe use of molecular techniques has put in the spotlight the existence of a large mass of malaria sub-microscopic infections among apparently healthy populations. These sub-microscopic infections are considered an important pool for maintained malaria transmission.

methodsIn order to assess the appearance of Plasmodium vivax gametocytes in circulation, gametocyte density and the parasite infectivity to Anopheles mosquitoes, a study was designed to compare three groups of volunteers either experimentally infected with P. vivax sporozoites (early infections; n = 16) or naturally infected patients (acute malaria, n = 16 and asymptomatic, n = 14). In order to determine gametocyte stage, a quantitative reverse transcriptase PCR (RT-qPCR) assay targeting two sexual stage-specific molecular markers was used. Parasite infectivity was assessed by membrane feeding assays (MFA).

resultsIn early infections P. vivax gametocytes could be detected starting at day 7 without giving rise to infected mosquitoes during 13 days of follow-up. Asymptomatic carriers, with presumably long-lasting infections, presented the highest proportion of mature gametocytes and were as infective as acute patients.

conclusionsThis study shows the potential role of P. vivax asymptomatic carriers in malaria transmission should be considered when new policies are envisioned to redirect malaria control strategies towards targeting asymptomatic infections as a tool for malaria elimination.

Indexed as

AdolescentAdultAnimalsAnophelesFemaleHumansMalaria, FalciparumMaleMiddle AgedPlasmodium vivaxYoung Adult

Identifiers

PMID26822406
PMCPMC4730736
OpenAlexW2260088396

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.