Evidence map›Paper›PMID 32379762›Full record

ArticlePLoS neglected tropical diseases2020

Molecular surveillance over 14 years confirms reduction of Plasmodium vivax and falciparum transmission after implementation of Artemisinin-based combination therapy in Papua, Indonesia.

Zuleima Pava, Agatha M Puspitasari, Angela Rumaseb, Irene Handayuni, Leily Trianty, Retno A S Utami, Yusrifar K Tirta, Faustina Burdam, Enny Kenangalem, Grennady Wirjanata and 8 more

Abstract read
In one paragraph

Article in PLoS neglected tropical diseases, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 2 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

9 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Article
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  6. 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

18 authors.

Zuleima PavaGlobal and Tropical Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, Australia.ORCID 0000-0002-4802-0647
Agatha M PuspitasariEijkman Institute for Molecular Biology, Jakarta, Indonesia.
Angela RumasebGlobal and Tropical Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, Australia.
Irene HandayuniGlobal and Tropical Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, Australia.
Leily TriantyEijkman Institute for Molecular Biology, Jakarta, Indonesia.
Retno A S UtamiEijkman Institute for Molecular Biology, Jakarta, Indonesia.ORCID 0000-0001-6142-0496
Yusrifar K TirtaEijkman Institute for Molecular Biology, Jakarta, Indonesia.ORCID 0000-0001-7592-9445
Faustina BurdamMimika District Health Authority, Timika, Papua, Indonesia.
Enny KenangalemMimika District Health Authority, Timika, Papua, Indonesia.
Grennady WirjanataGlobal and Tropical Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, Australia.ORCID 0000-0002-6858-8547
Steven KhoGlobal and Tropical Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, Australia.
Hidayat TrimarsantoEijkman Institute for Molecular Biology, Jakarta, Indonesia.
Nicholas M AnsteyGlobal and Tropical Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, Australia.
Jeanne Rini PoespoprodjoMimika District Health Authority, Timika, Papua, Indonesia.ORCID 0000-0003-1573-734X
Rintis NoviyantiEijkman Institute for Molecular Biology, Jakarta, Indonesia.
Ric N PriceGlobal and Tropical Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, Australia.ORCID 0000-0003-2000-2874
Jutta MarfurtGlobal and Tropical Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, Australia.
Sarah AuburnGlobal and Tropical Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, Australia.ORCID 0000-0002-4638-536X

Funding

Wellcome Trust 200909Wellcome Trust 200909/Z/16/ZWellcome Trust GR071614MA
6 · The paper itself

Abstract

Genetic epidemiology can provide important insights into parasite transmission that can inform public health interventions. The current study compared long-term changes in the genetic diversity and structure of co-endemic Plasmodium falciparum and P. vivax populations. The study was conducted in Papua Indonesia, where high-grade chloroquine resistance in P. falciparum and P. vivax led to a universal policy of Artemisinin-based Combination Therapy (ACT) in 2006. Microsatellite typing and population genetic analyses were undertaken on available isolates collected between 2004 and 2017 from patients with uncomplicated malaria (n = 666 P. falciparum and n = 615 P. vivax). The proportion of polyclonal P. falciparum infections fell from 28% (38/135) before policy change (2004-2006) to 18% (22/125) at the end of the study (2015-2017); p<0.001. Over the same period, polyclonal P. vivax infections fell from 67% (80/119) to 35% (33/93); p<0.001. P. falciparum strains persisted for up to 9 years compared to 3 months for P. vivax, reflecting higher rates of outbreeding in the latter. Sub-structure was observed in the P. falciparum population, but not in P. vivax, confirming different patterns of outbreeding. The P. falciparum population exhibited 4 subpopulations that changed in frequency over time. Notably, a sharp rise was observed in the frequency of a minor subpopulation (K2) in the late post-ACT period, accounting for 100% of infections in late 2016-2017. The results confirm epidemiological evidence of reduced P. falciparum and P. vivax transmission over time. The smaller change in P. vivax population structure is consistent with greater outbreeding associated with relapsing infections and highlights the need for radical cure to reduce recurrent infections. The study emphasizes the challenge in disrupting P. vivax transmission and demonstrates the potential of molecular data to inform on the impact of public health interventions.

Indexed as

Epidemiological MonitoringAdolescentAdultAgedAged, 80 and overAntimalarialsArtemisininsDrug Therapy, CombinationFemaleGenetic VariationGenotyping TechniquesHumansIndonesiaLactonesMalaria, FalciparumMalaria, VivaxAntimalarialsartemisinArtemisininsLactones

Identifiers

PMID32379762
PMCPMC7237043

What OpenQuestion holds

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LicenceCC BY
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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.