Development of an indicator to evaluate the impact, on a community-based<i>Aedes aegypti</i>control intervention, of improved cleaning of water-storage containers by householders

Chan, Adeline; Sherman, Catalina; Lozano, R. C.; Fernández, Eduardo; Winch, Peter J.; Leontsini, Elli

doi:10.1080/00034983.1998.11813296

Cited by 7 publications

(5 citation statements)

References 10 publications

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“…While behaviors such as water use (Hammond et al, 2007), vessel emptying (Subra, 1983), cleaning (Chan et al, 1998), and covering with lids (Morrison et al, 2004) may reduce mosquito production, their implementation may not always be practical in particular water storage contexts. For example, frequent water usage may undermine the effects of lid placement and result in higher mosquito infestation rates in lidded vessels (Kittayapong and Strickman, 1993;Phuanukoonnon et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Ecological Links Between Water Storage Behaviors and Aedes aegypti Production: Implications for Dengue Vector Control in Variable Climates

et al. 2010

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Understanding linkages between household behavior and Aedes aegypti (L.) larval ecology is essential for community-based dengue mitigation. Here we associate water storage behaviors with the rate of A. aegypti pupal production in three dengue-endemic Colombian cities with different mean temperatures. Qualitative, semi-structured interviews and pupal counts were conducted over a 7-15-day period in 235 households containing a water storage vessel infested with larvae. Emptying vessels more often than every 7 days strongly reduced pupal production in all three cities. Emptying every 7-15 days reduced production by a similar magnitude as emptying <7 days in Armenia (21.9 degrees C), has a threefold smaller reduction as compared to <7 days in Bucaramanga (23.9 degrees C), and did not reduce production in Barranquilla (29.0 degrees C). Lidding vessels reduced mosquito production and was most feasible in Barranquilla because of container structure. Vessel emptying strongly correlated with usage in Barranquilla, where many households stored water in case of interruptions in piped service rather than for regular use. In the cooler cities, >90% of households regularly used stored water for washing clothes, generating a weaker correlation between emptying and usage. Emptying was less frequent in the households surveyed in the dry season in all three cities. These results show that A. aegypti production and human behaviors are coupled in a temperature-dependent manner. In addition to biological effects on aquatic stages, climate change may impact A. aegypti production through human behavioral adaptations. Vector control programs should account for geographic variation in temperature and water usage behaviors in designing targeted interventions.

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Section: Introductionmentioning

confidence: 99%

Ecological Links Between Water Storage Behaviors and Aedes aegypti Production: Implications for Dengue Vector Control in Variable Climates

et al. 2010

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“…La implementación del PEA en el período 2005-2010 ha demostrado cambios en la adopción de buenas prácticas en las familias expuestas que llevaron a reducciones significativas de los índices larvarios. Las prácticas de control de criaderos más reportadas fueron referidas al aseo del barril o la pila con "la untadita", un método de desinfección con acción ovicida sobre A. aegypti y que ha sido ampliamente descrito (15,(19)(20)(21). Dado que las actividades se desarrollaron en los meses de mayor incidencia de la enfermedad (época lluviosa), cuando los factores ambientales son más favorables para la transmisión del dengue, se considera que la reducción de los índices obedeció al efecto directo de la intervención educativa realizada a través de los Vigilantes Ambientalistas.…”

Section: Discussionunclassified

Un programa escolar para el control del dengue en Honduras: del conocimiento a la práctica

Montes¹,

Araujo²,

Leontsini³

et al. 2012

Rev Panam Salud Publica

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The Environmental School Program (PEA, for its Spanish acronym), a dengue control initiative focused on primary schools that took place during 2005-2010 in several cities in Honduras, is described. The environmental health program was designed to increase knowledge and develop skills in the identification and control of Aedes aegypti breeding sites, as well as in water and solid waste management. The results, as measured by behavioral change and reduced larval indices, were satisfactory in the majority of the participating schools. The initiative involved not only children, but also their parents and teachers. In addition to reducing larval indices, PEA was successful in promoting community participation in environmental issues, particularly Aedes control. The inclusion of this educational content in the primary school curriculum in Honduras remains pending.

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“…albopictus. Therefore, an indicator (e.g., a composite index) for evaluating the effects of periodic cleaning would be helpful (30). Moreover, it was not possible to significantly reduce the number of water-filled containers and positive indoor containers, which actually increased in number after the extensive control measures.…”

Section: Discussionmentioning

confidence: 99%

Emergency Vector Control in a DENV-2 Outbreak in 2002 in Pingtung City, Pingtung County, Taiwan

Teng,

Chen,

Tsai

et al. 2007

Jpn J Infect Dis

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This paper reports the strategy and effectiveness of an emergency control program conducted in Pingtung City, Taiwan in response to dengue outbreaks. In our control strategy, we carried out 3 insecticide space sprays with an interval of 6 -7 days and 2 source reductions to cover the entire duration of dengue virus exposure in humans and mosquito vectors. The control effect was demonstrated by a significant reduction in the Breteau (51.1%) and larval (80.0%) indices, but no such effect was demonstrated by alterations in the adult index (54.9%), house index (45.0%), container index (33.8%), or by indoor (15.8%), outdoor (31.2%), or total water-filled containers (22.7%) per 100 premises examined. The contribution made by the reduction in the number of positive containers was primarily in the outdoor (77.2%), and not the indoor containers (-6.0%). This reduction attributed to an overall reduction of 96.0% Aedes albopictus larvae and 71.0% Aedes aegypti. Therefore, 4 weeks after this extensive emergency control measure, the number of dengue cases dropped to one. Finally, due to both the decrease in temperature resulting from the upcoming winter, and to the sustained effort toward source reduction, the transmission cycle of DENV-2 in Pingtung City was interrupted at the beginning of 2003, and no additional cases were identified in late 2003.

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Development of an indicator to evaluate the impact, on a community-basedAedes aegypticontrol intervention, of improved cleaning of water-storage containers by householders

Cited by 7 publications

References 10 publications

Ecological Links Between Water Storage Behaviors and Aedes aegypti Production: Implications for Dengue Vector Control in Variable Climates

Ecological Links Between Water Storage Behaviors and Aedes aegypti Production: Implications for Dengue Vector Control in Variable Climates

Un programa escolar para el control del dengue en Honduras: del conocimiento a la práctica

Emergency Vector Control in a DENV-2 Outbreak in 2002 in Pingtung City, Pingtung County, Taiwan

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