Shifting patterns of Aedes aegypti fine scale spatial clustering in Iquitos, Peru.
Empiric evidence shows that Aedes aegypti abundance is spatially heterogeneous and that some areas and larval habitats produce more mosquitoes than others. There is a knowledge gap, however, with regards to the temporal persistence of such Ae. aegypti abundance hotspots. In this study, we used a lon...
Published in: | PLoS Neglected Tropical Diseases |
---|---|
Main Authors: | , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Public Library of Science (PLoS)
2014
|
Subjects: | |
Online Access: | https://doi.org/10.1371/journal.pntd.0003038 https://doaj.org/article/0aa5d6279a48417097d051db405e83a1 |
id |
ftdoajarticles:oai:doaj.org/article:0aa5d6279a48417097d051db405e83a1 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:0aa5d6279a48417097d051db405e83a1 2023-05-15T15:14:42+02:00 Shifting patterns of Aedes aegypti fine scale spatial clustering in Iquitos, Peru. Genevieve LaCon Amy C Morrison Helvio Astete Steven T Stoddard Valerie A Paz-Soldan John P Elder Eric S Halsey Thomas W Scott Uriel Kitron Gonzalo M Vazquez-Prokopec 2014-08-01T00:00:00Z https://doi.org/10.1371/journal.pntd.0003038 https://doaj.org/article/0aa5d6279a48417097d051db405e83a1 EN eng Public Library of Science (PLoS) http://europepmc.org/articles/PMC4125221?pdf=render https://doaj.org/toc/1935-2727 https://doaj.org/toc/1935-2735 1935-2727 1935-2735 doi:10.1371/journal.pntd.0003038 https://doaj.org/article/0aa5d6279a48417097d051db405e83a1 PLoS Neglected Tropical Diseases, Vol 8, Iss 8, p e3038 (2014) Arctic medicine. Tropical medicine RC955-962 Public aspects of medicine RA1-1270 article 2014 ftdoajarticles https://doi.org/10.1371/journal.pntd.0003038 2022-12-30T22:07:41Z Empiric evidence shows that Aedes aegypti abundance is spatially heterogeneous and that some areas and larval habitats produce more mosquitoes than others. There is a knowledge gap, however, with regards to the temporal persistence of such Ae. aegypti abundance hotspots. In this study, we used a longitudinal entomologic dataset from the city of Iquitos, Peru, to (1) quantify the spatial clustering patterns of adult Ae. aegypti and pupae counts per house, (2) determine overlap between clusters, (3) quantify the temporal stability of clusters over nine entomologic surveys spaced four months apart, and (4) quantify the extent of clustering at the household and neighborhood levels.Data from 13,662 household entomological visits performed in two Iquitos neighborhoods differing in Ae. aegypti abundance and dengue virus transmission was analyzed using global and local spatial statistics. The location and extent of Ae. aegypti pupae and adult hotspots (i.e., small groups of houses with significantly [p<0.05] high mosquito abundance) were calculated for each of the 9 entomologic surveys. The extent of clustering was used to quantify the probability of finding spatially correlated populations. Our analyses indicate that Ae. aegypti distribution was highly focal (most clusters do not extend beyond 30 meters) and that hotspots of high vector abundance were common on every survey date, but they were temporally unstable over the period of study.Our findings have implications for understanding Ae. aegypti distribution and for the design of surveillance and control activities relying on household-level data. In settings like Iquitos, where there is a relatively low percentage of Ae. aegypti in permanent water-holding containers, identifying and targeting key premises will be significantly challenged by shifting hotspots of Ae. aegypti infestation. Focusing efforts in large geographic areas with historically high levels of transmission may be more effective than targeting Ae. aegypti hotspots. Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic PLoS Neglected Tropical Diseases 8 8 e3038 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Arctic medicine. Tropical medicine RC955-962 Public aspects of medicine RA1-1270 |
spellingShingle |
Arctic medicine. Tropical medicine RC955-962 Public aspects of medicine RA1-1270 Genevieve LaCon Amy C Morrison Helvio Astete Steven T Stoddard Valerie A Paz-Soldan John P Elder Eric S Halsey Thomas W Scott Uriel Kitron Gonzalo M Vazquez-Prokopec Shifting patterns of Aedes aegypti fine scale spatial clustering in Iquitos, Peru. |
topic_facet |
Arctic medicine. Tropical medicine RC955-962 Public aspects of medicine RA1-1270 |
description |
Empiric evidence shows that Aedes aegypti abundance is spatially heterogeneous and that some areas and larval habitats produce more mosquitoes than others. There is a knowledge gap, however, with regards to the temporal persistence of such Ae. aegypti abundance hotspots. In this study, we used a longitudinal entomologic dataset from the city of Iquitos, Peru, to (1) quantify the spatial clustering patterns of adult Ae. aegypti and pupae counts per house, (2) determine overlap between clusters, (3) quantify the temporal stability of clusters over nine entomologic surveys spaced four months apart, and (4) quantify the extent of clustering at the household and neighborhood levels.Data from 13,662 household entomological visits performed in two Iquitos neighborhoods differing in Ae. aegypti abundance and dengue virus transmission was analyzed using global and local spatial statistics. The location and extent of Ae. aegypti pupae and adult hotspots (i.e., small groups of houses with significantly [p<0.05] high mosquito abundance) were calculated for each of the 9 entomologic surveys. The extent of clustering was used to quantify the probability of finding spatially correlated populations. Our analyses indicate that Ae. aegypti distribution was highly focal (most clusters do not extend beyond 30 meters) and that hotspots of high vector abundance were common on every survey date, but they were temporally unstable over the period of study.Our findings have implications for understanding Ae. aegypti distribution and for the design of surveillance and control activities relying on household-level data. In settings like Iquitos, where there is a relatively low percentage of Ae. aegypti in permanent water-holding containers, identifying and targeting key premises will be significantly challenged by shifting hotspots of Ae. aegypti infestation. Focusing efforts in large geographic areas with historically high levels of transmission may be more effective than targeting Ae. aegypti hotspots. |
format |
Article in Journal/Newspaper |
author |
Genevieve LaCon Amy C Morrison Helvio Astete Steven T Stoddard Valerie A Paz-Soldan John P Elder Eric S Halsey Thomas W Scott Uriel Kitron Gonzalo M Vazquez-Prokopec |
author_facet |
Genevieve LaCon Amy C Morrison Helvio Astete Steven T Stoddard Valerie A Paz-Soldan John P Elder Eric S Halsey Thomas W Scott Uriel Kitron Gonzalo M Vazquez-Prokopec |
author_sort |
Genevieve LaCon |
title |
Shifting patterns of Aedes aegypti fine scale spatial clustering in Iquitos, Peru. |
title_short |
Shifting patterns of Aedes aegypti fine scale spatial clustering in Iquitos, Peru. |
title_full |
Shifting patterns of Aedes aegypti fine scale spatial clustering in Iquitos, Peru. |
title_fullStr |
Shifting patterns of Aedes aegypti fine scale spatial clustering in Iquitos, Peru. |
title_full_unstemmed |
Shifting patterns of Aedes aegypti fine scale spatial clustering in Iquitos, Peru. |
title_sort |
shifting patterns of aedes aegypti fine scale spatial clustering in iquitos, peru. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2014 |
url |
https://doi.org/10.1371/journal.pntd.0003038 https://doaj.org/article/0aa5d6279a48417097d051db405e83a1 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
PLoS Neglected Tropical Diseases, Vol 8, Iss 8, p e3038 (2014) |
op_relation |
http://europepmc.org/articles/PMC4125221?pdf=render https://doaj.org/toc/1935-2727 https://doaj.org/toc/1935-2735 1935-2727 1935-2735 doi:10.1371/journal.pntd.0003038 https://doaj.org/article/0aa5d6279a48417097d051db405e83a1 |
op_doi |
https://doi.org/10.1371/journal.pntd.0003038 |
container_title |
PLoS Neglected Tropical Diseases |
container_volume |
8 |
container_issue |
8 |
container_start_page |
e3038 |
_version_ |
1766345124387749888 |