Unusual developing sites of dengue vectors and potential epidemiological implications

Dieng, Hamady; Saifur, Rahman G. M.; Ahmad, Abu Hassan; Soua, Mohamed; Aziz, Al Thbiani; Satho, Tomomitsu; Miake, Fumio; Jaal, Zairi; AbuBakar, Sazaly; Morales, Ronald E.

doi:10.1016/s2221-1691(12)60047-1

Cited by 25 publications

(27 citation statements)

References 38 publications

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“…albopictus is adapted to the birdcage environment. Analogous observations were also revealed by some previous works (Tanaka et al, 1979;Dieng et al, 2012;Bartlett-Healy et al, 2012), however no research has been done on bird-mediated transfer of nutrients to mosquito larval habitats and its impact on larval development and adult fitness. This study represents the first formal attempt to do so.…”

Section: Discussionsupporting

confidence: 76%

“…Bird-mediated transferal of nutrients via their droppings to terrestrial and aquatic ecosystems has been well documented (Mun, Q7 1997;Ligęza and Smal, 2003;Fujita and Koike, 2007). Despite some reports showing the presence of Aedes larvae in birdbaths (Watson, 1967;CDC, 2012;Dieng et al, 2012;Bartlett-Healy et al, 2012), there has been no analysis of the nutritional significance of bird fecal matter on Ae. albopictus larval performance.…”

Section: Discussionmentioning

confidence: 99%

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Occurrence of a mosquito vector in bird houses: Developmental consequences and potential epidemiological implications

Dieng

Hassan

et al. 2015

Acta Tropica

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a b s t r a c tEven with continuous vector control, dengue is still a growing threat to public health in Southeast Asia. Main causes comprise difficulties in identifying productive breeding sites and inappropriate targeted chemical interventions. In this region, rural families keep live birds in backyards and dengue mosquitoes have been reported in containers in the cages. To focus on this particular breeding site, we examined the capacity of bird fecal matter (BFM) from the spotted dove, to support Aedes albopictus larval growth. The impact of BFM larval uptake on some adult fitness traits influencing vectorial capacity was also investigated. In serial bioassays involving a high and low larval density (HD and LD), BFM and larval standard food (LSF) affected differently larval development. At HD, development was longer in the BFM environment. There were no appreciable mortality differences between the two treatments, which resulted in similar pupation and adult emergence successes. BFM treatment produced a better gender balance. There were comparable levels of blood uptake and egg production in BFM and LSF females at LD; that was not the case for the HD one, which resulted in bigger adults. BFM and LSF females displayed equivalent lifespans; in males, this parameter was shorter in those derived from the BFM/LD treatment. Taken together these results suggest that bird defecations successfully support the development of Ae. albopictus. Due to their cryptic aspects, containers used to supply water to encaged birds may not have been targeted by chemical interventions.

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Section: Discussionsupporting

confidence: 76%

Section: Discussionmentioning

confidence: 99%

Occurrence of a mosquito vector in bird houses: Developmental consequences and potential epidemiological implications

Dieng

Hassan

et al. 2015

Acta Tropica

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“…albopictus poses one of the greatest challenges for dengue and Zika control. The difficulties arise from the ability of both species to exploit small pockets of water, often inaccessible because they are located in private areas within the peridomestic environment [14,64,65]. These sources are also often ephemeral and their abundance increases and decreases on a continual basis [6].…”

Section: The Need For Community Engagement and Participationmentioning

confidence: 99%

The State of the Art of Lethal Oviposition Trap-Based Mass Interventions for Arboviral Control

Johnson

Ritchie

Fonseca

2017

Insects

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The intensifying expansion of arboviruses highlights the need for effective invasive Aedes control. While mass-trapping interventions have long been discredited as inefficient compared to insecticide applications, increasing levels of insecticide resistance, and the development of simple affordable traps that target and kill gravid female mosquitoes, show great promise. We summarize the methodologies and outcomes of recent lethal oviposition trap-based mass interventions for suppression of urban Aedes and their associated diseases. The evidence supports the recommendation of mass deployments of oviposition traps to suppress populations of invasive Aedes, although better measures of the effects on disease control are needed. Strategies associated with successful mass-trap deployments include: (1) high coverage (>80%) of the residential areas; (2) pre-intervention and/or parallel source reduction campaigns; (3) direct involvement of community members for economic long-term sustainability; and (4) use of new-generation larger traps (Autocidal Gravid Ovitrap, AGO; Gravid Aedes Trap, GAT) to outcompete remaining water-holding containers. While to the best of our knowledge all published studies so far have been on Ae. aegypti in resource-poor or tropical settings, we propose that mass deployment of lethal oviposition traps can be used for focused cost-effective control of temperate Ae. albopictus pre-empting arboviral epidemics and increasing participation of residents in urban mosquito control.

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“…In general, the strong association among variables related to housing conditions indicates precarious services in the immediate surroundings, which may also be related to a higher vector density in the periphery of urban centers, where poor sanitation is often more frequent and the microclimate contributes to the increase in mosquito populations (29)(30)(31).…”

Section: Discussionmentioning

confidence: 99%

Monitoring the Paraguayan epidemiological dengue surveillance system (2009-2011) using Benford’s law

et al. 2016

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Introduction:Dengue is the most widespread arbovirus worldwide. In Paraguay, it reappeared in [1988][1989], with one of the largest epidemic outbreaks occurring in 2011. Objective: To evaluate the performance of the dengue epidemiological surveillance system in Paraguay between 2009 and 2011. Materials and methods:We conducted an ecological study with secondary epidemiological surveillance data. We analyzed notified cases of the disease based on the distribution expected by Benford's law. To this end, we used the first and second digits from the global records stratified by region, season, population density, indicators of housing conditions and heads of cattle. Results: The epidemiological surveillance system performed better during non-epidemic periods and in the states with better housing conditions and fewer heads of cattle. Conclusion: Given that a difference in the performance existed, we recommended that the system remains operating at the same high alert level even during periods when fewer cases are expected. The technology used by the method proposed to monitor the notification of cases is easy to transfer to operational staff. Materiales y métodos. Se hizo un estudio ecológico basado en datos secundarios de la vigilancia epidemiológica. Con base en la distribución esperada según la ley de Benford, se analizaron los casos notificados de la enfermedad; para tal fin, se usaron los primeros y segundos dígitos de los registros globales y estratificados por regiones, estaciones, densidad poblacional, indicadores de las condiciones de la vivienda y número de cabezas de ganado bovino. Resultados. El sistema de vigilancia epidemiológica se desempeñó mejor durante los periodos no epidémicos, y en los departamentos donde existen mejores condiciones de vivienda y pocas cabezas de ganado bovino.584 Biomédica 2016;36:583-92 Gómez-Camponovo M, Moreno J, Idrovo ÁJ, et al. Conclusión. Dadas las diferencias de desempeño, se recomendó que el sistema mantenga la alerta incluso cuando no se espere un mayor número de casos. El método propuesto para evaluar la notificación de casos es fácil de transferir al personal operativo.Palabras clave: control de vectores; notificación de enfermedad; vigilancia epidemiológica; dengue; distribuciones estadísticas; Paraguay. doi: http://dx

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Unusual developing sites of dengue vectors and potential epidemiological implications

Cited by 25 publications

References 38 publications

Occurrence of a mosquito vector in bird houses: Developmental consequences and potential epidemiological implications

Occurrence of a mosquito vector in bird houses: Developmental consequences and potential epidemiological implications

The State of the Art of Lethal Oviposition Trap-Based Mass Interventions for Arboviral Control

Monitoring the Paraguayan epidemiological dengue surveillance system (2009-2011) using Benford’s law

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