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Damus O, Supreme C, Lemoine JF, Raccurt C, McBeath J, Ogoma SB, Corbel V, Andrinopoulos K, Impoinvil D, Killeen GF, Czeher C. Community end user perceptions of hessian fabric transfluthrin vapour emanators for protecting against mosquitoes under conditions of routine use in Port-au-Prince, Haiti. PLoS One 2024; 19:e0300368. [PMID: 38985752 PMCID: PMC11236173 DOI: 10.1371/journal.pone.0300368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 02/27/2024] [Indexed: 07/12/2024] Open
Abstract
BACKGROUND A treated fabric device for emanating the volatile pyrethroid transfluthrin was recently developed in Tanzania that protected against night-biting Anopheles and Culex mosquitoes for several months. Here perceptions of community end users provided with such transfluthrin emanators, primarily intended to protect them against day-active Aedes vectors of human arboviruses that often attack people outdoors, were assessed in Port-au-Prince, Haiti. METHODS Following the distribution of transfluthrin emanators to participating households in poor-to-middle class urban neighbourhoods, questionnaire surveys and in-depth interviews of end-user households were supplemented with conventional and Photovoice-based focus group discussions. Observations were assessed synthetically to evaluate user perceptions of protection and acceptability, and to solicit advice for improving and promoting them in the future. RESULTS Many participants viewed emanators positively and several outlined various advantages over current alternatives, although some expressed concerns about smell, health hazards, bulkiness, unattractiveness and future cost. Most participants expressed moderate to high satisfaction with protection against mosquitoes, especially indoors. Protection against other arthropod pests was also commonly reported, although satisfaction levels were highly variable. Diverse use practices were reported, some of which probably targeted nocturnal Culex resting indoors, rather than Aedes attacking them outdoors during daylight hours. Perceived durability of protection varied: While many participants noted some slow loss over months, others noted rapid decline within days. A few participants specifically attributed efficacy loss to outdoor use and exposure to wind or moisture. Many expressed stringent expectations of satisfactory protection levels, with even a single mosquito bite considered unsatisfactory. Some participants considered emanators superior to fans, bedsheets, sprays and coils, but it is concerning that several preferred them to bed nets and consequently stopped using the latter. CONCLUSIONS The perspectives shared by Haitian end-users are consistent with those from similar studies in Brazil and recent epidemiological evidence from Peru that other transfluthrin emanator products can protect against arbovirus infection. While these encouraging sociological observations contrast starkly with evidence of essentially negligible effects upon Aedes landing rates from parallel entomological assessments across Haiti, Tanzania, Brazil and Peru, no other reason to doubt the generally encouraging views expressed herein by Haitian end users could be identified.
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Affiliation(s)
| | | | - Jean-Frantz Lemoine
- Programme National de Contrôle de la Malaria, Ministère de la Santé Publique et de la Population, Port-au-Prince, Republic of Haiti
| | | | | | | | - Vincent Corbel
- Institut de Recherche pour le Developpement, Infectious Diseases and Vectors-Ecology, Genetics, Evolution and Control (MIVEGEC) Unit, University of Montpellier, Montpellier, France
- Laboratório de Fisiologia e Controle de Artrópodes Vetores (Laficave), Instituto Oswaldo Cruz (IOC), Fundação Oswaldo Cruz (FIOCRUZ), Rio de Janeiro-RJ, Brazil
| | - Katherine Andrinopoulos
- Tulane University School of Public Health and Tropical Medicine, New Orleans, Louisiana, United States of America
| | - Daniel Impoinvil
- Entomology Division, Centers for Disease Control and Prevention, Atlanta, GA, United States of America
| | - Gerry F. Killeen
- Environmental Health and Ecological Sciences Department, Ifakara Health Institute, Morogoro, United Republic of Tanzania
- Department of Vector Biology, Liverpool School of Tropical Medicine, Liverpool, United Kingdom
- School of Biological Earth & Environmental Sciences, Environmental Research Institute, University College Cork, Cork, Republic of Ireland
| | - Cyrille Czeher
- Institut de Recherche pour le Developpement, Infectious Diseases and Vectors-Ecology, Genetics, Evolution and Control (MIVEGEC) Unit, University of Montpellier, Montpellier, France
- Entente Interdépartementale pour la Démoustication du Littoral Méditerranéen (EID Méditerranée), Montpellier, France
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Legorreta-Soberanis J, Paredes-Solís S, Morales-Pérez A, Nava-Aguilera E, Serrano-de Los Santos FR, Sánchez-Gervacio BM, Ledogar RJ, Cockcroft A, Andersson N. Household costs for personal protection against mosquitoes: secondary outcomes from a randomised controlled trial of dengue prevention in Guerrero state, Mexico. BMC Public Health 2017; 17:399. [PMID: 28699550 PMCID: PMC5506592 DOI: 10.1186/s12889-017-4303-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Dengue is a serious public health issue that affects households in endemic areas in terms of health and also economically, imposing costs for prevention and treatment of cases. The Camino Verde cluster-randomised controlled trial in Mexico and Nicaragua assessed the impact of evidence-based community engagement in dengue prevention. The Mexican arm of the trial was conducted in 90 randomly selected communities in three coastal regions of Guerrero State. This study reports an analysis of a secondary outcome of the trial: household use of and expenditure on anti-mosquito products. We examined whether the education and mobilisation activities of the trial motivated people to spend less on anti-mosquito products. METHODS We carried out a household questionnaire survey in the trial communities in 2010 (12,312 households) and 2012 (5349 households in intervention clusters, 5142 households in control clusters), including questions about socio-economic status, self-reported dengue illness, and purchase of and expenditure on insecticide anti-mosquito products in the previous month. We examined expenditures on anti-mosquito products at baseline in relation to social vulnerability and we compared use of and expenditures on these products between intervention and control clusters in 2012. RESULTS In 2010, 44.2% of 12,312 households reported using anti-mosquito products, with a mean expenditure of USD4.61 per month among those who used them. Socially vulnerable households spent less on the products. In 2012, after the intervention, the proportion of households who purchased anti-mosquito products in the last month was significantly lower in intervention clusters (47.8%; 2503/5293) than in control clusters (53.3%; 2707/5079) (difference - 0.05, 95% CIca -0.100 to -0.010). The mean expenditure on the products, among those households who bought them, was USD6.43; 30.4% in the intervention clusters and 36.7% in the control clusters spent more than this (difference - 0.06, 95% CIca -0.12 to -0.01). These expenditures on anti-mosquito products represent 3.3% and 3.8% respectively of monthly household income for the poorest 10% of the population in 2012. CONCLUSIONS The Camino Verde community mobilisation intervention, as well as being effective in reducing dengue infections, was effective in reducing household use of and expenditure on insecticide anti-mosquito products. TRIAL REGISTRATION ( ISRCTN27581154 ).
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Affiliation(s)
- José Legorreta-Soberanis
- Centro de Investigación de Enfermedades Tropicales de la Universidad Autónoma de Guerrero, Guerrero state, Acapulco, Mexico.
| | - Sergio Paredes-Solís
- Centro de Investigación de Enfermedades Tropicales de la Universidad Autónoma de Guerrero, Guerrero state, Acapulco, Mexico
| | - Arcadio Morales-Pérez
- Centro de Investigación de Enfermedades Tropicales de la Universidad Autónoma de Guerrero, Guerrero state, Acapulco, Mexico
| | - Elizabeth Nava-Aguilera
- Centro de Investigación de Enfermedades Tropicales de la Universidad Autónoma de Guerrero, Guerrero state, Acapulco, Mexico
| | | | | | | | - Anne Cockcroft
- Department of Family Medicine, McGill University, Montreal, Canada.,CIET Trust, Gaborone, Botswana
| | - Neil Andersson
- Centro de Investigación de Enfermedades Tropicales de la Universidad Autónoma de Guerrero, Guerrero state, Acapulco, Mexico.,Department of Family Medicine, McGill University, Montreal, Canada
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Kirkby K, Galappaththy GNL, Kurinczuk JJ, Rajapakse S, Fernando SD. Knowledge, attitudes and practices relevant to malaria elimination amongst resettled populations in a post-conflict district of northern Sri Lanka. Trans R Soc Trop Med Hyg 2012; 107:110-8. [PMID: 23222949 DOI: 10.1093/trstmh/trs015] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Malaria-related knowledge, preventative methods and treatment-seeking behaviours were investigated in a post-conflict district of Sri Lanka in order to guide the development of components of malaria interventions and to support future programme evaluation. METHODS A structured questionnaire was used to collect data from a random sample of 300 households in four Divisional Secretariat Divisions (DSD) of the district where internally displaced populations were being resettled after a 30-year civil war. RESULTS The surveyed community had a good overall level of knowledge of malaria. There was high bednet ownership (94.0%), although only 48.0% of households in the study had long-lasting insecticide-treated nets (LLIN). Most respondents reported rapid treatment-seeking behaviour (71.0%) and easy access to malaria diagnostic facilities (67.0%). The Tamil population living in Manthai West and Madhu DSDs who were displaced to refugee camps had better malaria-related knowledge and practices, probably due to the malaria control activities focused on these camps by the government. CONCLUSIONS Although knowledge and practices regarding malaria amongst resettled populations in Mannar District were high, continued malaria surveillance, case management, vector control including distribution of LLINs, education and information campaigns are important not only amongst the communities affected by the conflict but the entire district.
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Affiliation(s)
- Katherine Kirkby
- Department of Public Health, Rosemary Rue Building, University of Oxford, Old Road Campus, Headington, Oxford OX3 7LF, UK
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Noble Surendran S, Kannathasan S, Kajatheepan A, Justin Jude P. Chikungunya-type fever outbreak: some aspects related to this new epidemic in Jaffna district, northern Sri Lanka. Trop Med Health 2007. [DOI: 10.2149/tmh.35.249] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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