Characteristics of the Spatial Pattern of the Dengue Vector, Aedes Aegypti, in Iquitos, Peru

Getis, Arthur; Gray, Kenneth; Scott, Thomas W.; Morrison, Amy C.

doi:10.4269/ajtmh.2003.69.494

Cited by 257 publications

(231 citation statements)

References 19 publications

Supporting

Mentioning

217

Contrasting

Unclassified

Order By: Relevance

“…Effective vector control relies critically on the determination of the proper scale to address dengue virus transmission (Getis et al, 2003;Suaya et al, 2009). Different geographical scales have been suggested, ranging from finer scales based on the vector's flight range (Getis et al, 2003;Yoon et al, 2012) to larger scales due to the relative importance the closeness of neighbouring communities and human movement (Shepard et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Spatio-temporal patterns of dengue in Malaysia: combining address and sub-district level

et al. 2014

View full text Add to dashboard Cite

Abstract. Spatio-temporal patterns of dengue risk in Malaysia were studied both at the address and the sub-district level in the province of Selangor and the Federal Territory of Kuala Lumpur. We geocoded laboratory-confirmed dengue cases from the years 2008 to 2010 at the address level and further aggregated the cases in proportion to the population at risk at the sub-district level. Kulldorff's spatial scan statistic was applied for the investigation that identified changing spatial patterns of dengue cases at both levels. At the address level, spatio-temporal clusters of dengue cases were concentrated at the central and south-eastern part of the study area in the early part of the years studied. Analyses at the sub-district level revealed a consistent spatial clustering of a high number of cases proportional to the population at risk. Linking both levels assisted in the identification of differences and confirmed the presence of areas at high risk for dengue infection. Our results suggest that the observed dengue cases had both a spatial and a temporal epidemiological component, which needs to be acknowledged and addressed to develop efficient control measures, including spatially explicit vector control. Our findings highlight the importance of detailed geographical analysis of disease cases in heterogeneous environments with a focus on clustered populations at different spatial and temporal scales. We conclude that bringing together information on the spatio-temporal distribution of dengue cases with a deeper insight of linkages between dengue risk, climate factors and land use constitutes an important step towards the development of an effective risk management strategy.

show abstract

Section: Introductionmentioning

confidence: 99%

“…Different geographical scales have been suggested, ranging from finer scales based on the vector's flight range (Getis et al, 2003;Yoon et al, 2012) to larger scales due to the relative importance the closeness of neighbouring communities and human movement (Shepard et al, 2012). Fine-scale studies, i.e.…”

Section: Introductionmentioning

confidence: 99%

Spatio-temporal patterns of dengue in Malaysia: combining address and sub-district level

et al. 2014

View full text Add to dashboard Cite

show abstract

“…In some studies, released mosquitoes tended to cluster around houses with some dispersal towards adjacent houses, and mosquitoes released on the perimeter of villages moved towards the centre of the village (Sheppard et al, 1969;Trpis and Hausemann, 1986;Getis et al, 2003;Harrington et al, 2005;Maciel-de-Freitas et al, 2006). The relatively large numbers and duration of DENV infected females captured in houses with confirmed dengue cases in Merida, Mexico may further indicate high fidelity between Ae.…”

Section: Dispersalmentioning

confidence: 99%

“…aegypti is that they rarely disperse far from where they eclose (i.e. emergence as an adult from the pupa) (Getis et al, 2003), therefore, the presence of adult forms is for practical purposes an accurate indication of the proximity of breeding sites. Adults only disperse further when a vital requirement is limiting or absent or there is a disturbance.…”

Section: Dispersalmentioning

confidence: 99%

See 1 more Smart Citation

Abbreviations and acronyms

2018

Safety Assessment of Transgenic Organisms in the Environment, Volume 8

View full text Add to dashboard Cite

This work is published under the responsibility of the Secretary-General of the OECD. The opinions expressed and arguments employed herein do not necessarily reflect the official views of OECD member countries.This document, as well as any data and any map included herein, are without prejudice to the status of or sovereignty over any territory, to the delimitation of international frontiers and boundaries and to the name of any territory, city or area.Please cite this publication as: OECD (2018) The statistical data for Israel are supplied by and under the responsibility of the relevant Israeli authorities. The use of such data by the OECD is without prejudice to the status of the Golan Heights, East Jerusalem and Israeli settlements in the West Bank under the terms of international law.Photo credits: Cover © Maks Ershov.Corrigenda to OECD publications may be found on line at: www.oecd.org/about/publishing/corrigenda.htm. © OECD 2018You can copy, download or print OECD content for your own use, and you can include excerpts from OECD publications, databases and multimedia products in your own documents, presentations, blogs, websites and teaching materials, provided that suitable acknowledgment of the source and copyright owner(s) is given. All requests for public or commercial use and translation rights should be submitted to rights@oecd.org. Requests for permission to photocopy portions of this material for public or commercial use shall be addressed directly to the Copyright Clearance Center (CCC) at info@copyright.com or the Centre francais d'exploitation du droit de copie (CFC) at contact@cfcopies.com. FOREWORD │ 3SAFETY ASSESSMENTOF TRANSGENIC ORGANISMSIN THE ENVIRONMENT, VOLUME 8 © OECD 2018 ForewordModern biotechnologies are applied to plants species (crops, flowers, trees), animals and micro-organisms. The safety of the resulting transgenic organisms when released in the environment for their use in agriculture, forestry, the food and feed industry or for other applications represents a challenging issue. Genetically engineered products are rigorously assessed by their developers during their elaboration, and by governments when ready for release, to ensure high safety standards. This remains essential with new biotechnology developments using insects to fight against disease outbreaks: engineered mosquitoes need to be evaluated through a scientifically sound approach to risk/safety assessment that will inform biosafety regulators and support the decision concerning the release of these novel organisms in the environment.The OECD offers a long-standing recognised expertise in biosafety and contributes to facilitating an harmonised approach. The OECD's Working Group on Harmonisation of Regulatory Oversight in Biotechnology (WG-HROB) was established in 1995. The WG-HROB gathers national authorities responsible for the environmental risk/safety assessment of products of modern biotechnology in OECD countries and other economies. International organisations and experts involved in biosafety activities are a...

show abstract

Landscape dynamics of a vector‐borne disease in the western US: How vector–habitat relationships inform disease hotspots

Elias

Savoy²,

Swanson

et al. 2022

Ecosphere

View full text Add to dashboard Cite

Vesicular stomatitis (VS) is a vector‐borne viral disease that causes lesions in livestock, premises, county and state quarantines, and important economic losses. We investigated vector–habitat characteristics for vectors associated with VS in regions of recurrent disease within the western United States (US) that consistently lead to the environment where vector, host, and pathogen populations intersect to enable pathogen transmission. We analyzed the habitats of previously identified insect vectors, including black flies (BFs) (Simulium vittatum complex), biting midges (BMs) (Culicoides variipennis complex, which includes Culicoides sonorensis), and sand flies (SFs) (Lutzomyia shannoni) in six regions of interest (ROIs) containing hotspots of VS ranging from Texas (TX) to Wyoming. This analysis broadened the understanding of (1) how regions of reoccurring VS differ from the broader western US, (2) how geographically separated regions and hotspots are similar across time, and (3) how vector–environment habitat a priori knowledge relates to observed hotspots. Analysis of watershed factors (livestock densities, land‐cover proportions, stream and lake densities, and irrigation methods) indicated a complex system separating areas with high, recurring VS from the broader western US. Although no single characteristic separated the six ROIs from other areas, we found two distinct emerging groups (northern ROI and TX). Hotspots, estimated from monthly VS concentrations, evolved northward throughout the year and most hotspots were closer to flowing water and agricultural land than the broader ROI. All ROIs contained environmental conditions suitable for multiple vectors at some point in the year, but BFs had the highest suitability scores, whereas BM scores were lower and varied annually with higher suitability in summer. SFs had the lowest suitability score in all ROIs, consistent with their low likelihood of being vectors. BM habitat patches were often orders of magnitude smaller than BF patches, and hotspot patches reinforce the likelihood that BF may be the most critical vector in northern ROI, whereas both BM and BF have similar likelihood in southern ROI. Given limited existing vector data, this analysis provides an alternate pathway for using habitat information to associate likely vectors responsible for transmission. Results could support early warning and mitigation efforts to reduce the incidence of VS.

show abstract

Characteristics of the Spatial Pattern of the Dengue Vector, Aedes Aegypti, in Iquitos, Peru

Cited by 257 publications

References 19 publications

Spatio-temporal patterns of dengue in Malaysia: combining address and sub-district level

Spatio-temporal patterns of dengue in Malaysia: combining address and sub-district level

Abbreviations and acronyms

Landscape dynamics of a vector‐borne disease in the western US: How vector–habitat relationships inform disease hotspots

Contact Info

Product

Resources

About