Evidence map›Paper›PMID 31665350›Full record

ArticleThe Journal of infectious diseases2020

Mosquito Exposure and Malaria Morbidity: A Microlevel Analysis of Household Mosquito Populations and Malaria in a Population-Based Longitudinal Cohort in Western Kenya.

Wendy Prudhomme O'Meara, Ryan Simmons, Paige Bullins, Betsy Freedman, Lucy Abel, Judith Mangeni, Steve M Taylor, Andrew A Obala

Open access · greenAbstract read
In one paragraph

Article in The Journal of infectious diseases, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 1 pooled it
1.6field-weighted citation impact, top 16% 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

17 citing papers in PubMed, 1 synthesis or guideline pooled it, 20 citations in OpenAlex.

  1. Pooled it
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  12. Symptomatic malaria enhances protection from reinfection with homologousmedRxiv : the preprint server for health sciences · 2023
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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

8 authors at 4 institutions in 2 countries.

Wendy Prudhomme O'MearaDuke Global Health Institute, Duke University, Durham, North Carolina, USA.
Ryan SimmonsDuke Global Health Institute, Duke University, Durham, North Carolina, USA.
Paige BullinsDuke Global Health Institute, Duke University, Durham, North Carolina, USA.
Betsy FreedmanDepartment of Medicine, Duke University, Durham, North Carolina, USA.
Lucy AbelAcademic Model Providing Access to Healthcare, Moi Teaching and Referral Hospital, Eldoret, Kenya.
Judith MangeniSchool of Nursing, College of Health Sciences, Moi University, Eldoret, Kenya.
Steve M TaylorDuke Global Health Institute, Duke University, Durham, North Carolina, USA.
Andrew A ObalaSchool of Medicine, College of Health Sciences, Moi University, Eldoret, Kenya.
Duke University · USMoi University · KEAMPATH · KEDuke Institute for Health Innovation · US

Funding

Once bitten: A longitudinal, observational study of successful malaria parasite transmission events between humans and mosquitosR01AI146849 · NIAID · DUKE UNIVERSITY · PI PRUDHOMMEOMEARA, WENDY, TAYLOR, STEVE MYER · 2019 to 2023
$3.0M
Spatial Scales of Plasmodium Falciparum Generations; Implications for EliminationR21AI126024 · NIAID · DUKE UNIVERSITY · PI PRUDHOMMEOMEARA, WENDY · 2017 to 2018
$338k
NIAID NIH HHS R01 AI146849NIAID NIH HHS R21 AI126024
6 · The paper itself

Abstract

backgroundMalaria morbidity is highly overdispersed in the population. Fine-scale differences in mosquito exposure may partially explain this heterogeneity in individual malaria outcomes.

methodsIn 38 households we explored the effect of household-level mosquito exposure and individual insecticide-treated net (ITN) use on relative risk (RR) of confirmed malaria. We conducted monthly active surveillance (n = 254; 2624 person-months) and weekly mosquito collection (2092 household-days of collection), and used molecular techniques to confirm human blood feeding and exposure to infectious mosquitoes.

resultsOf 1494 female Anopheles (89.8% Anopheles gambiae sensu lato), 88.3% were fed, 51.9% had a human blood meal, and 9.2% were sporozoite infected. In total, 168 laboratory-confirmed malaria episodes were reported (incidence rate 0.064 episodes per person-month at risk; 95% confidence interval [CI], .055-.074). Malaria risk was directly associated with exposure to sporozoite-infected mosquitoes (RR, 1.24; 95% CI, 1.11-1.38). No direct effect was measured between ITN use and malaria morbidity; however, ITN use did moderate the effect of mosquito exposure on morbidity.

conclusionsMalaria risk increases linearly with vector density and feeding success for persons with low ITN use. In contrast, malaria risk among high ITN users is consistently low and insensitive to variation in mosquito exposure.

Indexed as

MalariaAdolescentAdultAnimalsAnophelesChildChild, PreschoolEnvironmental ExposureFemaleHumansInfantInfant, NewbornInsecticide-Treated BednetsKenyaLongitudinal StudiesMosquito VectorsAnophelescohortinsecticide-treated netmalaria

Identifiers

PMID31665350
PMCPMC7325711
OpenAlexW2982302530

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.