Social and environmental risk factors for dengue in Delhi city: A retrospective study.
Global urbanization is leading to an inexorable spread of several major diseases that need to be stemmed. Dengue is one of these major diseases spreading in cities today, with its principal mosquito vector superbly adapted to the urban environment. Current mosquito control strategies are proving ina...
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ftdoajarticles:oai:doaj.org/article:579295b5d4a849a18390e1ec3d47b188 2023-05-15T15:12:48+02:00 Social and environmental risk factors for dengue in Delhi city: A retrospective study. Olivier Telle Birgit Nikolay Vikram Kumar Samuel Benkimoun Rupali Pal B N Nagpal Richard E Paul 2021-02-01T00:00:00Z https://doi.org/10.1371/journal.pntd.0009024 https://doaj.org/article/579295b5d4a849a18390e1ec3d47b188 EN eng Public Library of Science (PLoS) https://doi.org/10.1371/journal.pntd.0009024 https://doaj.org/toc/1935-2727 https://doaj.org/toc/1935-2735 1935-2727 1935-2735 doi:10.1371/journal.pntd.0009024 https://doaj.org/article/579295b5d4a849a18390e1ec3d47b188 PLoS Neglected Tropical Diseases, Vol 15, Iss 2, p e0009024 (2021) Arctic medicine. Tropical medicine RC955-962 Public aspects of medicine RA1-1270 article 2021 ftdoajarticles https://doi.org/10.1371/journal.pntd.0009024 2022-12-31T11:55:03Z Global urbanization is leading to an inexorable spread of several major diseases that need to be stemmed. Dengue is one of these major diseases spreading in cities today, with its principal mosquito vector superbly adapted to the urban environment. Current mosquito control strategies are proving inadequate, especially in the face of such urbanisation and novel, evidence-based targeted approaches are needed. Through combined epidemiological and entomological approaches, we aimed to identify a novel sanitation strategy to alleviate the burden of dengue through how the dengue virus spreads through the community. We combined surveillance case mapping, prospective serological studies, year-round mosquito surveys, socio-economic and Knowledge Attitudes and Practices surveys across Delhi. We identified lack of access to tap water (≤98%) as an important risk factor for dengue virus IgG sero-positivity (adjusted Odds Ratio 4.69, 95% C.I. 2.06-10.67) and not poverty per se. Wealthier districts had a higher dengue burden despite lower mosquito densities than the Intermediary income communities (adjusted Odds Ratio 2.92, 95% C.I. 1.26-6.72). This probably reflects dengue being introduced by people travelling from poorer areas to work in wealthier houses. These poorer, high density areas, where temperatures are also warmer, also had dengue cases during the winter. Control strategies based on improved access to a reliable supply of tap water plus focal intervention in intra-urban heat islands prior to the dengue season could not only lead to a reduction in mosquito abundance but also eliminate the reservoir of dengue virus clearly circulating at low levels in winter in socio-economically disadvantaged areas. Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic PLOS Neglected Tropical Diseases 15 2 e0009024 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
Arctic medicine. Tropical medicine RC955-962 Public aspects of medicine RA1-1270 |
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Arctic medicine. Tropical medicine RC955-962 Public aspects of medicine RA1-1270 Olivier Telle Birgit Nikolay Vikram Kumar Samuel Benkimoun Rupali Pal B N Nagpal Richard E Paul Social and environmental risk factors for dengue in Delhi city: A retrospective study. |
topic_facet |
Arctic medicine. Tropical medicine RC955-962 Public aspects of medicine RA1-1270 |
description |
Global urbanization is leading to an inexorable spread of several major diseases that need to be stemmed. Dengue is one of these major diseases spreading in cities today, with its principal mosquito vector superbly adapted to the urban environment. Current mosquito control strategies are proving inadequate, especially in the face of such urbanisation and novel, evidence-based targeted approaches are needed. Through combined epidemiological and entomological approaches, we aimed to identify a novel sanitation strategy to alleviate the burden of dengue through how the dengue virus spreads through the community. We combined surveillance case mapping, prospective serological studies, year-round mosquito surveys, socio-economic and Knowledge Attitudes and Practices surveys across Delhi. We identified lack of access to tap water (≤98%) as an important risk factor for dengue virus IgG sero-positivity (adjusted Odds Ratio 4.69, 95% C.I. 2.06-10.67) and not poverty per se. Wealthier districts had a higher dengue burden despite lower mosquito densities than the Intermediary income communities (adjusted Odds Ratio 2.92, 95% C.I. 1.26-6.72). This probably reflects dengue being introduced by people travelling from poorer areas to work in wealthier houses. These poorer, high density areas, where temperatures are also warmer, also had dengue cases during the winter. Control strategies based on improved access to a reliable supply of tap water plus focal intervention in intra-urban heat islands prior to the dengue season could not only lead to a reduction in mosquito abundance but also eliminate the reservoir of dengue virus clearly circulating at low levels in winter in socio-economically disadvantaged areas. |
format |
Article in Journal/Newspaper |
author |
Olivier Telle Birgit Nikolay Vikram Kumar Samuel Benkimoun Rupali Pal B N Nagpal Richard E Paul |
author_facet |
Olivier Telle Birgit Nikolay Vikram Kumar Samuel Benkimoun Rupali Pal B N Nagpal Richard E Paul |
author_sort |
Olivier Telle |
title |
Social and environmental risk factors for dengue in Delhi city: A retrospective study. |
title_short |
Social and environmental risk factors for dengue in Delhi city: A retrospective study. |
title_full |
Social and environmental risk factors for dengue in Delhi city: A retrospective study. |
title_fullStr |
Social and environmental risk factors for dengue in Delhi city: A retrospective study. |
title_full_unstemmed |
Social and environmental risk factors for dengue in Delhi city: A retrospective study. |
title_sort |
social and environmental risk factors for dengue in delhi city: a retrospective study. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2021 |
url |
https://doi.org/10.1371/journal.pntd.0009024 https://doaj.org/article/579295b5d4a849a18390e1ec3d47b188 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
PLoS Neglected Tropical Diseases, Vol 15, Iss 2, p e0009024 (2021) |
op_relation |
https://doi.org/10.1371/journal.pntd.0009024 https://doaj.org/toc/1935-2727 https://doaj.org/toc/1935-2735 1935-2727 1935-2735 doi:10.1371/journal.pntd.0009024 https://doaj.org/article/579295b5d4a849a18390e1ec3d47b188 |
op_doi |
https://doi.org/10.1371/journal.pntd.0009024 |
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PLOS Neglected Tropical Diseases |
container_volume |
15 |
container_issue |
2 |
container_start_page |
e0009024 |
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1766343442305122304 |