Evidence map›Paper›PMID 29029179›Full record

ArticleThe Journal of infectious diseases2017

Sustained Malaria Control Over an 8-Year Period in Papua New Guinea: The Challenge of Low-Density Asymptomatic Plasmodium Infections.

Cristian Koepfli, Maria Ome-Kaius, Shadrach Jally, Elisheba Malau, Samuel Maripal, Jason Ginny, Lincoln Timinao, Johanna Helena Kattenberg, Thomas Obadia, Michael White and 6 more

Abstract read
In one paragraph

Article in The Journal of infectious diseases, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

36 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Integrating parallelCommunications health · 2026
    Article
  4. Article
  5. Article
  6. Asymptomatic/submicroscopicParasite epidemiology and control · 2025
    Article
  7. Review
  8. Article
  9. Population genetics ofFrontiers in genetics · 2025
    Article
  10. Article
  11. Article
  12. Article
  13. Observational
  14. Article
  15. Article
  16. Article
  17. Article
  18. Review
  19. Article
  20. Article
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

16 authors.

Cristian KoepfliPopulation Health and Immunity Division, Walter and Eliza Hall Institute, Melbourne, Australia.
Maria Ome-KaiusPopulation Health and Immunity Division, Walter and Eliza Hall Institute, Melbourne, Australia.
Shadrach JallyPapua New Guinea Institute of Medical Research, Madang.
Elisheba MalauPopulation Health and Immunity Division, Walter and Eliza Hall Institute, Melbourne, Australia.
Samuel MaripalPapua New Guinea Institute of Medical Research, Madang.
Jason GinnyPapua New Guinea Institute of Medical Research, Madang.
Lincoln TiminaoPapua New Guinea Institute of Medical Research, Madang.
Johanna Helena KattenbergPopulation Health and Immunity Division, Walter and Eliza Hall Institute, Melbourne, Australia.
Thomas ObadiaMalaria: Parasites & Hosts Unit, Department of Parasites and Insect Vectors, Institut Pasteur, Paris, France.
Michael WhitePopulation Health and Immunity Division, Walter and Eliza Hall Institute, Melbourne, Australia.
Patricia RarauSchool of Population and Global Health, University of Melbourne, Parkville, Australia.
Nicolas SennPapua New Guinea Institute of Medical Research, Madang.
Alyssa E BarryPopulation Health and Immunity Division, Walter and Eliza Hall Institute, Melbourne, Australia.
James W KazuraCase Western Reserve University, Cleveland, Ohio.
Ivo MuellerPopulation Health and Immunity Division, Walter and Eliza Hall Institute, Melbourne, Australia.
Leanne J RobinsonPopulation Health and Immunity Division, Walter and Eliza Hall Institute, Melbourne, Australia.

Funding

TransmissionU19AI089686 · NIAID · CASE WESTERN RESERVE UNIVERSITY · PI KAZURA, JAMES WALTER · 2010 to 2016
$9.9M
NIAID NIH HHS U19 AI089686
6 · The paper itself

Abstract

Background: The scale-up of effective malaria control in the last decade has resulted in a substantial decline in the incidence of clinical malaria in many countries. The effects on the proportions of asymptomatic and submicroscopic infections and on transmission potential are yet poorly understood. Methods: In Papua New Guinea, vector control has been intensified since 2008, and improved diagnosis and treatment was introduced in 2012. Cross-sectional surveys were conducted in Madang Province in 2006 (with 1280 survey participants), 2010 (with 2117 participants), and 2014 (with 2516 participants). Infections were quantified by highly sensitive quantitative polymerase chain reaction (PCR) analysis, and gametocytes were quantified by reverse-transcription qPCR analysis. Results: Plasmodium falciparum prevalence determined by qPCR decreased from 42% in 2006 to 9% in 2014. The P. vivax prevalence decreased from 42% in 2006 to 13% in 2010 but then increased to 20% in 2014. Parasite densities decreased 5-fold from 2006 to 2010; 72% of P. falciparum and 87% of P. vivax infections were submicroscopic in 2014. Gametocyte density and positivity correlated closely with parasitemia, and population gametocyte prevalence decreased 3-fold for P. falciparum and 29% for P. vivax from 2010 to 2014. Conclusions: Sustained control has resulted in reduced malaria transmission potential, but an increasing proportion of gametocyte carriers are asymptomatic and submicroscopic and represent a challenge to malaria control.

Indexed as

Asymptomatic InfectionsBloodChildCross-Sectional StudiesDNA, ProtozoanGenome, ProtozoanGeographic MappingHumansInfection ControlLife Cycle StagesMalariaMalaria, FalciparumMalaria, VivaxPapua New GuineaParasitemiaPlasmodiumDNA, ProtozoanasymptomaticgametocyteMalaria controlsubmicroscopictemporal trend

Identifiers

PMID29029179
PMCPMC5853328

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.