Evidence map›Paper›PMID 30947726›Full record

ArticleMalaria journal2019

Vector competence, vectorial capacity of Nyssorhynchus darlingi and the basic reproduction number of Plasmodium vivax in agricultural settlements in the Amazonian Region of Brazil.

Maria Anice M Sallum, Jan E Conn, Eduardo S Bergo, Gabriel Z Laporta, Leonardo S M Chaves, Sara A Bickersmith, Tatiane M P de Oliveira, Elder Augusto G Figueira, Gilberto Moresco, Lêuda Olívêr 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 34 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
34citing 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

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

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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

13 authors.

Maria Anice M SallumDepartamento de Epidemiologia, Faculdade de Saúde Pública, Universidade de São Paulo, São Paulo, SP, Brazil. masallum@usp.br.ORCID http://orcid.org/0000-0002-7051-2891
Jan E ConnWadsworth Center, New York State Department of Health, Albany, NY, USA.
Eduardo S BergoSuperintendência de Controle de Endemias, Secretaria de Estado da Saúde de São Paulo, Araraquara, SP, Brazil.
Gabriel Z LaportaSetor de Pós-graduação, Pesquisa e Inovação, Faculdade de Medicina do ABC, Santo André, SP, Brazil.
Leonardo S M ChavesDepartamento de Epidemiologia, Faculdade de Saúde Pública, Universidade de São Paulo, São Paulo, SP, Brazil.
Sara A BickersmithWadsworth Center, New York State Department of Health, Albany, NY, USA.
Tatiane M P de OliveiraDepartamento de Epidemiologia, Faculdade de Saúde Pública, Universidade de São Paulo, São Paulo, SP, Brazil.
Elder Augusto G FigueiraFundação de Vigilância em Saúde do Amazonas, Manaus, AM, Brazil.
Gilberto MorescoSecretaria de Vigilância em Saúde, Departamento de Vigilância das Doenças Transmissíveis, Ministério da Saúde, Brasília, DF, Brazil.
Lêuda OlívêrFaculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil.
Claudio J StruchinerDepartamento de Doenças Endêmicas Samuel Pessoa, Escola Nacional de Saúde Pública, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brazil.
Laith YakobDepartment of Disease Control, London School of Hygiene and Tropical Medicine, London, WC1E 7HT, UK.
Eduardo MassadFaculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil.

Funding

Latitudinal Landscape Genomics and Ecology of Anopheles DarlingiR01AI110112 · NIAID · WADSWORTH CENTER · PI CONN, JAN E · 2014 to 2024
$3.7M
Conselho Nacional de Desenvolvimento Científico e Tecnológico 301877/2016-5Foundation for the National Institutes of Health R01 AI110112Fundação de Amparo à Pesquisa do Estado de São Paulo 2014/09774-1Fundação de Amparo à Pesquisa do Estado de São Paulo 2014/26229-7H2020 European Institute of Innovation and Technology 734584NIAID NIH HHS R01 AI110112
6 · The paper itself

Abstract

backgroundBrazilian malaria control programmes successfully reduced the incidence and mortality rates from 2005 to 2016. Since 2017, increased malaria has been reported across the Amazon. Few field studies focus on the primary malaria vector in high to moderate endemic areas, Nyssorhynchus darlingi, as the key entomological component of malaria risk, and on the metrics of Plasmodium vivax propagation in Amazonian rural communities.

methodsHuman landing catch collections were carried out in 36 houses of 26 communities in five municipalities in the Brazilian states of Acre, Amazonas and Rondônia states, with API (> 30). In addition, data on the number of locally acquired symptomatic infections were employed in mathematical modelling analyses carried out to determine Ny. darlingi vector competence and vectorial capacity to P. vivax; and to calculate the basic reproduction number for P. vivax.

resultsEntomological indices and malaria metrics ranged among localities: prevalence of P. vivax infection in Ny. darlingi, from 0.243% in Mâncio Lima, Acre to 3.96% in Machadinho D'Oeste, Rondônia; daily human-biting rate per person from 23 ± 1.18 in Cruzeiro do Sul, Acre, to 66 ± 2.41 in Lábrea, Amazonas; vector competence from 0.00456 in São Gabriel da Cachoeira, Amazonas to 0.04764 in Mâncio Lima, Acre; vectorial capacity from 0.0836 in Mâncio Lima, to 1.5 in Machadinho D'Oeste. The estimated R

conclusionsIn spite of low vector competence of Ny. darlingi to P. vivax, parasite propagation in the human population is enhanced by the high human-biting rate, and relatively high vectorial capacity. The high PvR

Indexed as

Basic Reproduction NumberAnimalsAnophelesBrazilHumansInsect Bites and StingsMalaria, VivaxMosquito VectorsPlasmodium vivaxBrazilian AmazonEpidemiologyMalaria metricsRural settlementsTransmission

Identifiers

PMID30947726
PMCPMC6449965

What OpenQuestion holds

Textmetadata
LicenceCC BY
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Registered trials

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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.