Evidence map›Paper›PMID 34499116›Full record

Trial reportClinical infectious diseases : an official publication of the Infectious Diseases Society of America2022

Dihydroartemisinin-Piperaquine Chemoprevention and Malaria Incidence After Severe Flooding: Evaluation of a Pragmatic Intervention in Rural Uganda.

Ross M Boyce, Brandon D Hollingsworth, Emma Baguma, Erin Xu, Varun Goel, Amanda Brown-Marusiak, Rabbison Muhindo, Raquel Reyes, Moses Ntaro, Mark J Siedner and 3 more

Open access · bronzeAbstract readPragmatic Clinical Trial
In one paragraph

Trial report in Clinical infectious diseases : an official publication of the Infectious Diseases Society of America, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed, 1 pooled it
0.6field-weighted citation impact, top 29% 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

6 citing papers in PubMed, 1 synthesis or guideline pooled it, 7 citations in OpenAlex.

  1. Pooled it
  2. Imported malaria predominates in near-elimination settings in Southwestern Uganda.medRxiv : the preprint server for health sciences · 2026
    Article
  3. Article
  4. Review
  5. Review
  6. 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

13 authors at 4 institutions in 3 countries.

Ross M BoyceInstitute for Global Health and Infectious Diseases, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.ORCID 0000-0002-9489-6324
Brandon D HollingsworthInstitute for Global Health and Infectious Diseases, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.
Emma BagumaDepartment of Community Health, Faculty of Medicine, Mbarara University of Science & Technology, Mbarara, Uganda.
Erin XuSchool of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.
Varun GoelCarolina Population Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.
Amanda Brown-MarusiakDepartment of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.
Rabbison MuhindoDepartment of Community Health, Faculty of Medicine, Mbarara University of Science & Technology, Mbarara, Uganda.
Raquel ReyesDivision of Hospital Medicine, UNC School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.
Moses NtaroDepartment of Community Health, Faculty of Medicine, Mbarara University of Science & Technology, Mbarara, Uganda.
Mark J SiednerMassachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, USA.
Sarah G StaedkeDepartment of Clinical Research, London School of Hygiene and Tropical Medicine, London, United Kingdom.
Jonathan J JulianoInstitute for Global Health and Infectious Diseases, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.
Edgar M MulogoDepartment of Community Health, Faculty of Medicine, Mbarara University of Science & Technology, Mbarara, Uganda.
University of North Carolina at Chapel Hill · USMbarara University of Science and Technology · UGHarvard University · USLondon School of Hygiene & Tropical Medicine · GB

Funding

Carolina Population CenterR24HD050924 · NICHD · UNIV OF NORTH CAROLINA CHAPEL HILL · PI MORGAN, SAMUEL PHILIP · 2005 to 2014
$10.0M
Research Services CoreP2CHD050924 · NICHD · UNIV OF NORTH CAROLINA CHAPEL HILL · PI KAREN B GUZZO · 2015 to 2026
$9.6M
Serial Killers to Mosquitos: The Spatial Targeting of Larval habitats in rural Uganda using geographic ProfilingK23AI141764 · NIAID · UNIV OF NORTH CAROLINA CHAPEL HILL · PI BOYCE, ROSS MATHEW · 2019 to 2023
$944k
NIAID NIH HHS K23 AI141764NICHD NIH HHS P2C HD050924NICHD NIH HHS R24 HD050924
6 · The paper itself

Abstract

backgroundMalaria epidemics are a well-described phenomenon after extreme precipitation and flooding. Yet, few studies have examined mitigation measures to prevent post-flood malaria epidemics.

methodsWe evaluated a malaria chemoprevention program implemented in response to severe flooding in western Uganda. Children aged ≤12 years from 1 village were eligible to receive 3 monthly rounds of dihydroartemisinin-piperaquine (DP). Two neighboring villages served as controls. Malaria cases were defined as individuals with a positive rapid diagnostic test result as recorded in health center registers. We performed a difference-in-differences analysis to estimate changes in the incidence and test positivity of malaria between intervention and control villages.

resultsA total of 554 children received at least 1 round of chemoprevention, with 75% participating in at least 2 rounds. Compared with control villages, we estimated a 53.4% reduction (adjusted rate ratio [aRR], 0.47; 95% confidence interval [CI]: .34-.62; P < .01) in malaria incidence and a 30% decrease in the test positivity rate (aRR, 0.70; 95% CI: .50-.97; P = .03) in the intervention village in the 6 months post-intervention. The impact was greatest among children who received the intervention, but decreased incidence was also observed in older children and adults (aRR, 0.57; 95% CI: .38-.84; P < .01).

conclusionsThree rounds of chemoprevention with DP delivered under pragmatic conditions reduced the incidence of malaria after severe flooding in western Uganda. These findings provide a proof-of-concept for the use of malaria chemoprevention to reduce excess disease burden associated with severe flooding.

Indexed as

AntimalarialsArtemisininsMalariaAdultChemopreventionChildFloodsHumansIncidencePiperazinesQuinolinesUgandaAntimalarialsArtemisininsartenimolpiperaquinePiperazinesQuinolineschemopreventionfloodingmalariamass drug administrationPlasmodium

Identifiers

PMID34499116
PMCPMC9258940
OpenAlexW3197212612

What OpenQuestion holds

Textmetadata
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.