The ecological dimensions of vector-borne disease research and control

Ellis, Brett R.; Wilcox, Bruce A.

doi:10.1590/s0102-311x2009001300015

Cited by 39 publications

(22 citation statements)

References 59 publications

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“…that given a suitable environment for transmission as defined by climatic variables, variations in population density, and more importantly human activities, would play the major role in underlying LF transmission intensity and prevalence levels. This conclusion, and the finding above for NDVI, support suggestions that gaining a better understanding of the association between the environment and LF, and indeed other vector-borne infections, requires a more detailed examination of other non-climatic variables that may confound such relationships and therefore underlie real world parasite transmission, including in particular the socio-ecological dimensions of parasite transmission and the effects of land use or habitat alteration by humans [78].…”

Section: Discussionsupporting

confidence: 71%

Mapping, Bayesian Geostatistical Analysis and Spatial Prediction of Lymphatic Filariasis Prevalence in Africa

Slater

Michael

2013

PLoS ONE

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There is increasing interest to control or eradicate the major neglected tropical diseases. Accurate modelling of the geographic distributions of parasitic infections will be crucial to this endeavour. We used 664 community level infection prevalence data collated from the published literature in conjunction with eight environmental variables, altitude and population density, and a multivariate Bayesian generalized linear spatial model that allows explicit accounting for spatial autocorrelation and incorporation of uncertainty in input data and model parameters, to construct the first spatially-explicit map describing LF prevalence distribution in Africa. We also ran the best-fit model against predictions made by the HADCM3 and CCCMA climate models for 2050 to predict the likely distributions of LF under future climate and population changes. We show that LF prevalence is strongly influenced by spatial autocorrelation between locations but is only weakly associated with environmental covariates. Infection prevalence, however, is found to be related to variations in population density. All associations with key environmental/demographic variables appear to be complex and non-linear. LF prevalence is predicted to be highly heterogenous across Africa, with high prevalences (>20%) estimated to occur primarily along coastal West and East Africa, and lowest prevalences predicted for the central part of the continent. Error maps, however, indicate a need for further surveys to overcome problems with data scarcity in the latter and other regions. Analysis of future changes in prevalence indicates that population growth rather than climate change per se will represent the dominant factor in the predicted increase/decrease and spread of LF on the continent. We indicate that these results could play an important role in aiding the development of strategies that are best able to achieve the goals of parasite elimination locally and globally in a manner that may also account for the effects of future climate change on parasitic infection.

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Section: Discussionsupporting

confidence: 71%

Mapping, Bayesian Geostatistical Analysis and Spatial Prediction of Lymphatic Filariasis Prevalence in Africa

Slater

Michael

2013

PLoS ONE

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“…Vector-borne diseases are inherently ecological problems and are critically dependent on environmental conditions ( Ellis & Wilcox 2009 ). Rainfall and temperature are important for regulating population sizes and the efficiency of disease transmission.…”

Section: Discussionmentioning

confidence: 99%

A comparison of larval, ovitrap and MosquiTRAP surveillance for Aedes (Stegomyia) aegypti

Resende

Silva

Ellis

et al. 2013

Mem. Inst. Oswaldo Cruz

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In Brazil, the entomological surveillance of Aedes (Stegomyia) aegypti is performed by government-mandated larval surveys. In this study, the sensitivities of an adult sticky trap and traditional surveillance methodologies were compared. The study was performed over a 12-week period in a residential neighbourhood of the municipality of Pedro Leopoldo, state of Minas Gerais, Brazil. An ovitrap and a MosquiTRAP were placed at opposite ends of each neighbourhood block (60 traps in total) and inspections were performed weekly. The study revealed significant correlations of moderate strength between the larval survey, ovitrap and MosquiTRAP measurements. A positive relationship was observed between temperature, adult capture measurements and egg collections, whereas precipitation and frequency of rainy days exhibited a negative relationship.

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“…[22][23][24] Ecosystemic approaches based on peridomicile cleaning or housing improvements for the control of T. dimidiata have been quite promising. 25,26 In the case of non-domiciliated T. dimidiata , the identification of the backyard/peridomicile and their characteristics as major risk factors for house infestation 20 lend further support to the feasibility of peridomicile management for vector control.…”

Section: Introductionmentioning

confidence: 99%

Comparative Field Trial of Alternative Vector Control Strategies for Non-Domiciliated Triatoma dimidiata

Ferral

Chavez-Nuñez²,

Euan-Garcia³

et al. 2010

The American Journal of Tropical Medicine and Hygiene

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Abstract. Chagas disease is a major vector-borne disease, and regional initiatives based on insecticide spraying have successfully controlled domiciliated vectors in many regions. Non-domiciliated vectors remain responsible for a significant transmission risk, and their control is a challenge. We performed a proof-of-concept field trial to test alternative strategies in rural Yucatan, Mexico. Follow-up of house infestation for two seasons following the interventions confirmed that insecticide spraying should be performed annually for the effective control of Triatoma dimidiata ; however, it also confirmed that insect screens or long-lasting impregnated curtains may represent good alternative strategies for the sustained control of these vectors. Ecosystemic peridomicile management would be an excellent complementary strategy to improve the cost-effectiveness of interventions. Because these strategies would also be effective against other vector-borne diseases, such as malaria or dengue, they could be integrated within a multi-disease control program.

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The ecological dimensions of vector-borne disease research and control

Cited by 39 publications

References 59 publications

Mapping, Bayesian Geostatistical Analysis and Spatial Prediction of Lymphatic Filariasis Prevalence in Africa

Mapping, Bayesian Geostatistical Analysis and Spatial Prediction of Lymphatic Filariasis Prevalence in Africa

A comparison of larval, ovitrap and MosquiTRAP surveillance for Aedes (Stegomyia) aegypti

Comparative Field Trial of Alternative Vector Control Strategies for Non-Domiciliated Triatoma dimidiata

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