“Where we put little fish in the water there are no mosquitoes:” a cross-sectional study on biological control of the Aedes aegypti vector in 90 coastal-region communities of Guerrero, Mexico

Abstract Background In the Mexican state of Guerrero, some households place fish in water storage containers to prevent the development of mosquito larvae. Studies have shown that larvivorous fish reduce larva count in household water containers, but there is a lack of evidence about whether the use...

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Main Authors: Arcadio Morales-Pérez, Elizabeth Nava-Aguilera, José Legorreta-Soberanis, Antonio Juan Cortés-Guzmán, Alejandro Balanzar-Martínez, Eva Harris, Josefina Coloma, Víctor M. Alvarado-Castro, Mónica Violeta Bonilla-Leon, Liliana Morales-Nava, Robert J. Ledogar, Anne Cockcroft, Neil Andersson
Format: Article
Language:English
Published: BMC 2017-05-01
Series:BMC Public Health
Subjects:
Online Access:http://link.springer.com/article/10.1186/s12889-017-4302-z
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author Arcadio Morales-Pérez
Elizabeth Nava-Aguilera
José Legorreta-Soberanis
Antonio Juan Cortés-Guzmán
Alejandro Balanzar-Martínez
Eva Harris
Josefina Coloma
Víctor M. Alvarado-Castro
Mónica Violeta Bonilla-Leon
Liliana Morales-Nava
Robert J. Ledogar
Anne Cockcroft
Neil Andersson
spellingShingle Arcadio Morales-Pérez
Elizabeth Nava-Aguilera
José Legorreta-Soberanis
Antonio Juan Cortés-Guzmán
Alejandro Balanzar-Martínez
Eva Harris
Josefina Coloma
Víctor M. Alvarado-Castro
Mónica Violeta Bonilla-Leon
Liliana Morales-Nava
Robert J. Ledogar
Anne Cockcroft
Neil Andersson
“Where we put little fish in the water there are no mosquitoes:” a cross-sectional study on biological control of the Aedes aegypti vector in 90 coastal-region communities of Guerrero, Mexico
BMC Public Health
Aedes aegypti
Pupa productivity
Dengue
Fish-based control
Larvivorous
Recent dengue virus infection
author_facet Arcadio Morales-Pérez
Elizabeth Nava-Aguilera
José Legorreta-Soberanis
Antonio Juan Cortés-Guzmán
Alejandro Balanzar-Martínez
Eva Harris
Josefina Coloma
Víctor M. Alvarado-Castro
Mónica Violeta Bonilla-Leon
Liliana Morales-Nava
Robert J. Ledogar
Anne Cockcroft
Neil Andersson
author_sort Arcadio Morales-Pérez
title “Where we put little fish in the water there are no mosquitoes:” a cross-sectional study on biological control of the Aedes aegypti vector in 90 coastal-region communities of Guerrero, Mexico
title_short “Where we put little fish in the water there are no mosquitoes:” a cross-sectional study on biological control of the Aedes aegypti vector in 90 coastal-region communities of Guerrero, Mexico
title_full “Where we put little fish in the water there are no mosquitoes:” a cross-sectional study on biological control of the Aedes aegypti vector in 90 coastal-region communities of Guerrero, Mexico
title_fullStr “Where we put little fish in the water there are no mosquitoes:” a cross-sectional study on biological control of the Aedes aegypti vector in 90 coastal-region communities of Guerrero, Mexico
title_full_unstemmed “Where we put little fish in the water there are no mosquitoes:” a cross-sectional study on biological control of the Aedes aegypti vector in 90 coastal-region communities of Guerrero, Mexico
title_sort “where we put little fish in the water there are no mosquitoes:” a cross-sectional study on biological control of the aedes aegypti vector in 90 coastal-region communities of guerrero, mexico
publisher BMC
series BMC Public Health
issn 1471-2458
publishDate 2017-05-01
description Abstract Background In the Mexican state of Guerrero, some households place fish in water storage containers to prevent the development of mosquito larvae. Studies have shown that larvivorous fish reduce larva count in household water containers, but there is a lack of evidence about whether the use of fish is associated with a reduction in dengue virus infection. We used data from the follow up survey of the Camino Verde cluster randomised controlled trial of community mobilisation to reduce dengue risk to study this association. Methods The survey in 2012, among 90 clusters in the three coastal regions of Guerrero State, included a questionnaire to 10,864 households about socio-demographic factors and self-reported cases of dengue illness in the previous year. Paired saliva samples provided serological evidence of recent dengue infection among 4856 children aged 3–9 years. An entomological survey in the same households looked for larvae and pupae of Aedes aegypti and recorded presence of fish and temephos in water containers. We examined associations with the two outcomes of recent dengue infection and reported dengue illness in bivariate analysis and then multivariate analysis using generalized linear mixed modelling. Results Some 17% (1730/10,111) of households had fish in their water containers. The presence of fish was associated with lower levels of recent dengue virus infection in children aged 3–9 years (OR 0.64; 95% CI 0.45–0.91), as was living in a rural area (OR 0.57; 95% CI 0.45–0.71), and being aged 3–5 years (OR 0.65; 95% CI 0.51–0.83). Factors associated with lower likelihood of self-reported dengue illness were: the presence of fish (OR 0.79; 95% CI 0.64–0.97), and living in a rural area (OR 0.74; 95% CI 0.65–0.84). Factors associated with higher likelihood of self-reported dengue illness were: higher education level of the household head (OR 1.28; 95% CI 1.07–1.52), living in a household with five people or less (OR 1.33; 95% CI 1.16–1.52) and household use of insecticide anti-mosquito products (OR 1.68; 95% CI 1.47–1.92). Conclusions Our study suggests that fish in water containers may reduce the risk of dengue virus infection and dengue illness. This could be a useful part of interventions to control the Aedes aegypti vector.
topic Aedes aegypti
Pupa productivity
Dengue
Fish-based control
Larvivorous
Recent dengue virus infection
url http://link.springer.com/article/10.1186/s12889-017-4302-z
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spelling doaj-6c32bf111f34461b999f34594df89db92020-11-24T22:20:15ZengBMCBMC Public Health1471-24582017-05-0117S114114910.1186/s12889-017-4302-z“Where we put little fish in the water there are no mosquitoes:” a cross-sectional study on biological control of the Aedes aegypti vector in 90 coastal-region communities of Guerrero, MexicoArcadio Morales-Pérez0Elizabeth Nava-Aguilera1José Legorreta-Soberanis2Antonio Juan Cortés-Guzmán3Alejandro Balanzar-Martínez4Eva Harris5Josefina Coloma6Víctor M. Alvarado-Castro7Mónica Violeta Bonilla-Leon8Liliana Morales-Nava9Robert J. Ledogar10Anne Cockcroft11Neil Andersson12Centro de Investigación de Enfermedades Tropicales (CIET), Universidad Autónoma de GuerreroCentro de Investigación de Enfermedades Tropicales (CIET), Universidad Autónoma de GuerreroCentro de Investigación de Enfermedades Tropicales (CIET), Universidad Autónoma de GuerreroDepartamento de Prevención y Control de Enfermedades Transmisibles por Vector, Servicios Estatales de SaludCentro de Investigación de Enfermedades Tropicales (CIET), Universidad Autónoma de GuerreroDivision of Infectious Diseases and Vaccinology, School of Public Health, University of CaliforniaDivision of Infectious Diseases and Vaccinology, School of Public Health, University of CaliforniaUnidad Académica de Matemáticas, Universidad Autónoma de GuerreroCentro de Investigación de Enfermedades Tropicales (CIET), Universidad Autónoma de GuerreroCentro de Investigación de Enfermedades Tropicales (CIET), Universidad Autónoma de GuerreroCIETinternationalDepartment of Family Medicine, McGill UniversityCentro de Investigación de Enfermedades Tropicales (CIET), Universidad Autónoma de GuerreroAbstract Background In the Mexican state of Guerrero, some households place fish in water storage containers to prevent the development of mosquito larvae. Studies have shown that larvivorous fish reduce larva count in household water containers, but there is a lack of evidence about whether the use of fish is associated with a reduction in dengue virus infection. We used data from the follow up survey of the Camino Verde cluster randomised controlled trial of community mobilisation to reduce dengue risk to study this association. Methods The survey in 2012, among 90 clusters in the three coastal regions of Guerrero State, included a questionnaire to 10,864 households about socio-demographic factors and self-reported cases of dengue illness in the previous year. Paired saliva samples provided serological evidence of recent dengue infection among 4856 children aged 3–9 years. An entomological survey in the same households looked for larvae and pupae of Aedes aegypti and recorded presence of fish and temephos in water containers. We examined associations with the two outcomes of recent dengue infection and reported dengue illness in bivariate analysis and then multivariate analysis using generalized linear mixed modelling. Results Some 17% (1730/10,111) of households had fish in their water containers. The presence of fish was associated with lower levels of recent dengue virus infection in children aged 3–9 years (OR 0.64; 95% CI 0.45–0.91), as was living in a rural area (OR 0.57; 95% CI 0.45–0.71), and being aged 3–5 years (OR 0.65; 95% CI 0.51–0.83). Factors associated with lower likelihood of self-reported dengue illness were: the presence of fish (OR 0.79; 95% CI 0.64–0.97), and living in a rural area (OR 0.74; 95% CI 0.65–0.84). Factors associated with higher likelihood of self-reported dengue illness were: higher education level of the household head (OR 1.28; 95% CI 1.07–1.52), living in a household with five people or less (OR 1.33; 95% CI 1.16–1.52) and household use of insecticide anti-mosquito products (OR 1.68; 95% CI 1.47–1.92). Conclusions Our study suggests that fish in water containers may reduce the risk of dengue virus infection and dengue illness. This could be a useful part of interventions to control the Aedes aegypti vector.http://link.springer.com/article/10.1186/s12889-017-4302-zAedes aegyptiPupa productivityDengueFish-based controlLarvivorousRecent dengue virus infection