Evidence map›Paper›PMID 31881898›Full record

ArticleMalaria journal2019

Impact of vector control interventions on malaria transmission intensity, outdoor vector biting rates and Anopheles mosquito species composition in Tororo, Uganda.

Alex K Musiime, David L Smith, Maxwell Kilama, John Rek, Emmanuel Arinaitwe, Joaniter I Nankabirwa, Moses R Kamya, Melissa D Conrad, Grant Dorsey, Anne M Akol and 3 more

Abstract read
In one paragraph

Article in Malaria journal, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 82 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
82citing 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

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

  1. Pooled it
  2. Permethrin-Treated Baby Wraps for the Prevention of Malaria.The New England journal of medicine · 2025
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22 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

13 authors.

Alex K MusiimeInfectious Diseases Research Collaboration, Kampala, Uganda. alexmedicare@yahoo.com.ORCID http://orcid.org/0000-0001-5978-109X
David L SmithInstitute for Health Metrics & Evaluation, University of Washington, Seattle, WA, USA.
Maxwell KilamaInfectious Diseases Research Collaboration, Kampala, Uganda.
John RekInfectious Diseases Research Collaboration, Kampala, Uganda.
Emmanuel ArinaitweInfectious Diseases Research Collaboration, Kampala, Uganda.
Joaniter I NankabirwaInfectious Diseases Research Collaboration, Kampala, Uganda.
Moses R KamyaInfectious Diseases Research Collaboration, Kampala, Uganda.
Melissa D ConradDepartment of Medicine, University of California San Francisco, San Francisco, CA, USA.
Grant DorseyDepartment of Medicine, University of California San Francisco, San Francisco, CA, USA.
Anne M AkolDepartment of Zoology, Entomology and Fisheries Sciences, College of Natural Sciences, Makerere University, Kampala, Uganda.
Sarah G StaedkeFaculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, UK.
Steve W LindsayDepartment of Biosciences, Durham University, Durham, UK.
James P EgonyuDepartment of Zoology, Entomology and Fisheries Sciences, College of Natural Sciences, Makerere University, Kampala, Uganda.

Funding

Transmission ProjectU19AI089674 · NIAID · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI MATTHEW G DORSEY, MOSES Robert KAMYA · 2010 to 2026
$29.3M
Training in malaria surveillance, epidemiology and implementation science research to strengthen malaria policy and control in UgandaD43TW010526 · FIC · MAKERERE UNIVERSITY COLLEGE OF HEALTH SCIENCES · PI MATTHEW G DORSEY, MOSES Robert KAMYA · 2017 to 2026
$2.3M
The impact of antimalarials and insecticide resistance on malaria transmission in UgandaK01TW010868 · FIC · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI CONRAD, MELISSA D · 2018 to 2022
$706k
Impact of malaria control interventions on the infectious reservoir, host immunity, and drug resistance in UgandaK43TW010365 · FIC · INFECTIOUS DISEASES RES COLLABORATION · PI NANKABIRWA, JOANITER IMMACULATE · 2017 to 2021
$514k
FIC NIH HHS D43 TW010526FIC NIH HHS K01 TW010868FIC NIH HHS K43 TW010365Fogarty International Center of the National Institutes of Health D43TW010526National Institute of Allergy and Infectious Diseases (NIAID) as part of the International Centers of Excellence in Malaria Research (ICEMR) program U19AI089674NIAID NIH HHS U19 AI089674
6 · The paper itself

Abstract

backgroundLong-lasting insecticidal nets (LLINs) and indoor residual spraying of insecticide (IRS) are widely recommended for the prevention of malaria in endemic regions. Data from human landing catches provide information on the impact of vector control on vector populations. Here, malaria transmission indoors and outdoors, before and after mass deployment of LLINs and IRS in Uganda was compared.

methodsThe study took place in Tororo district, a historically high transmission area where universal LLIN distribution was conducted in November 2013 and May 2017 and 6 rounds of IRS implemented from December 2014 to July 2018. Human landing catches were performed in 8 houses monthly from October 2011 to September 2012 (pre-intervention period) and every 4 weeks from November 2017 to October 2018 (post-intervention period). Mosquitoes were collected outdoors from 18:00 to 22:00 h and indoors from 18:00 to 06:00 h. Female Anopheles were tested for the presence of Plasmodium falciparum sporozoites and species identification performed using gross dissection and polymerase chain reaction (PCR).

resultsThe interventions were associated with a decline in human biting rate from 19.6 to 2.3 female Anopheles mosquitoes per house per night (p < 0.001) and annual entomological inoculation rate from 129 to 0 infective bites per person per year (p < 0.001). The proportion of mosquitoes collected outdoors increased from 11.6 to 49.4% (p < 0.001). Prior to the interventions the predominant species was Anopheles gambiae sensu stricto (s.s.), which comprised an estimated 76.7% of mosquitoes. Following the interventions, the predominant species was Anopheles arabiensis, which comprised 99.5% of mosquitoes, with almost complete elimination of An. gambiae s.s. (0.5%).

conclusionsMass distribution of LLINs and 6 rounds of IRS dramatically decreased vector density and sporozoite rate resulting in a marked reduction in malaria transmission intensity in a historically high transmission site in Uganda. These changes were accompanied by a shift in vector species from An. gambiae s.s. to An. arabiensis and a relative increase in outdoor biting.

Indexed as

BiodiversityMosquito ControlAnimalsAnophelesFemaleInsect Bites and StingsMalariaMosquito VectorsUgandaBiting ratesIndoor residual sprayingLong-lasting insecticide netsMalaria vectorTransmission

Identifiers

PMID31881898
PMCPMC6935116

What OpenQuestion holds

Textmetadata
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.