Joint malaria surveys lead towards improved cross-border cooperation between Savannakhet province, Laos and Quang Tri province, Vietnam
Abstract Background In Savannakhet province, Laos and Quang Tri province, Vietnam, malaria is still an important health problem and most cases are found in the mountainous, forested border areas where ethnic minority groups live. The objectives of this study were to obtain a better joint understandi...
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ftdoajarticles:oai:doaj.org/article:4e4829a86c274c8882931d00d0b884a2 2023-05-15T15:18:37+02:00 Joint malaria surveys lead towards improved cross-border cooperation between Savannakhet province, Laos and Quang Tri province, Vietnam Pongvongsa Tiengkham Ha Hoang Thanh Le Marchand Ron P Nonaka Daisuke Tojo Bumpei Phongmany Panom Moji Kazuhiko Kobayashi Jun 2012-08-01T00:00:00Z https://doi.org/10.1186/1475-2875-11-262 https://doaj.org/article/4e4829a86c274c8882931d00d0b884a2 EN eng BMC http://www.malariajournal.com/content/11/1/262 https://doaj.org/toc/1475-2875 doi:10.1186/1475-2875-11-262 1475-2875 https://doaj.org/article/4e4829a86c274c8882931d00d0b884a2 Malaria Journal, Vol 11, Iss 1, p 262 (2012) Anopheles dirus Forest cover Long-lasting insecticide-treated net Indoor residual spraying International border Arctic medicine. Tropical medicine RC955-962 Infectious and parasitic diseases RC109-216 article 2012 ftdoajarticles https://doi.org/10.1186/1475-2875-11-262 2022-12-30T21:45:22Z Abstract Background In Savannakhet province, Laos and Quang Tri province, Vietnam, malaria is still an important health problem and most cases are found in the mountainous, forested border areas where ethnic minority groups live. The objectives of this study were to obtain a better joint understanding of the malaria situation along the border and, on the basis of that, improve malaria control methods through better cooperation between the two countries. Methods Fourteen villages in Savannakhet and 22 villages in Quang Tri were randomly selected within 5 km from the border where a blood survey for microscopic diagnosis (n = 1256 and n = 1803, respectively), household interviews (n = 400, both sides) and vector surveys were conducted between August and October 2010. Satellite images were used to examine the forest density around the study villages. Results Malaria prevalence was significantly higher in Laos (5.2%) than in Vietnam (1.8%) and many other differences were found over the short distance across the border. Bed net coverage was high (> 90%) in both Laos and Vietnam but, while in Laos more than 60% of the nets were long-lasting insecticide-treated, Vietnam used indoor residual spraying in this area and the nets were untreated. Anopheles mosquitoes were more abundant in Laos than in Vietnam, especially many Anopheles dirus were captured in indoor light traps while none were collected in Vietnam. The forest cover was higher around the Lao than the Vietnamese villages. After this study routine exchange of malaria surveillance data was institutionalized and for the first time indoor residual spraying was applied in some Lao villages. Conclusions The abundance of indoor-collected An. dirus on the Laos side raises doubts about the effectiveness of a sole reliance on long-lasting insecticide-treated nets in this area. Next to strengthening the early detection, correct diagnosis and prompt, adequate treatment of malaria infections, it is recommended to test focal indoor residual spraying and the promotion of ... Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic Malaria Journal 11 1 262 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Anopheles dirus Forest cover Long-lasting insecticide-treated net Indoor residual spraying International border Arctic medicine. Tropical medicine RC955-962 Infectious and parasitic diseases RC109-216 |
spellingShingle |
Anopheles dirus Forest cover Long-lasting insecticide-treated net Indoor residual spraying International border Arctic medicine. Tropical medicine RC955-962 Infectious and parasitic diseases RC109-216 Pongvongsa Tiengkham Ha Hoang Thanh Le Marchand Ron P Nonaka Daisuke Tojo Bumpei Phongmany Panom Moji Kazuhiko Kobayashi Jun Joint malaria surveys lead towards improved cross-border cooperation between Savannakhet province, Laos and Quang Tri province, Vietnam |
topic_facet |
Anopheles dirus Forest cover Long-lasting insecticide-treated net Indoor residual spraying International border Arctic medicine. Tropical medicine RC955-962 Infectious and parasitic diseases RC109-216 |
description |
Abstract Background In Savannakhet province, Laos and Quang Tri province, Vietnam, malaria is still an important health problem and most cases are found in the mountainous, forested border areas where ethnic minority groups live. The objectives of this study were to obtain a better joint understanding of the malaria situation along the border and, on the basis of that, improve malaria control methods through better cooperation between the two countries. Methods Fourteen villages in Savannakhet and 22 villages in Quang Tri were randomly selected within 5 km from the border where a blood survey for microscopic diagnosis (n = 1256 and n = 1803, respectively), household interviews (n = 400, both sides) and vector surveys were conducted between August and October 2010. Satellite images were used to examine the forest density around the study villages. Results Malaria prevalence was significantly higher in Laos (5.2%) than in Vietnam (1.8%) and many other differences were found over the short distance across the border. Bed net coverage was high (> 90%) in both Laos and Vietnam but, while in Laos more than 60% of the nets were long-lasting insecticide-treated, Vietnam used indoor residual spraying in this area and the nets were untreated. Anopheles mosquitoes were more abundant in Laos than in Vietnam, especially many Anopheles dirus were captured in indoor light traps while none were collected in Vietnam. The forest cover was higher around the Lao than the Vietnamese villages. After this study routine exchange of malaria surveillance data was institutionalized and for the first time indoor residual spraying was applied in some Lao villages. Conclusions The abundance of indoor-collected An. dirus on the Laos side raises doubts about the effectiveness of a sole reliance on long-lasting insecticide-treated nets in this area. Next to strengthening the early detection, correct diagnosis and prompt, adequate treatment of malaria infections, it is recommended to test focal indoor residual spraying and the promotion of ... |
format |
Article in Journal/Newspaper |
author |
Pongvongsa Tiengkham Ha Hoang Thanh Le Marchand Ron P Nonaka Daisuke Tojo Bumpei Phongmany Panom Moji Kazuhiko Kobayashi Jun |
author_facet |
Pongvongsa Tiengkham Ha Hoang Thanh Le Marchand Ron P Nonaka Daisuke Tojo Bumpei Phongmany Panom Moji Kazuhiko Kobayashi Jun |
author_sort |
Pongvongsa Tiengkham |
title |
Joint malaria surveys lead towards improved cross-border cooperation between Savannakhet province, Laos and Quang Tri province, Vietnam |
title_short |
Joint malaria surveys lead towards improved cross-border cooperation between Savannakhet province, Laos and Quang Tri province, Vietnam |
title_full |
Joint malaria surveys lead towards improved cross-border cooperation between Savannakhet province, Laos and Quang Tri province, Vietnam |
title_fullStr |
Joint malaria surveys lead towards improved cross-border cooperation between Savannakhet province, Laos and Quang Tri province, Vietnam |
title_full_unstemmed |
Joint malaria surveys lead towards improved cross-border cooperation between Savannakhet province, Laos and Quang Tri province, Vietnam |
title_sort |
joint malaria surveys lead towards improved cross-border cooperation between savannakhet province, laos and quang tri province, vietnam |
publisher |
BMC |
publishDate |
2012 |
url |
https://doi.org/10.1186/1475-2875-11-262 https://doaj.org/article/4e4829a86c274c8882931d00d0b884a2 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Malaria Journal, Vol 11, Iss 1, p 262 (2012) |
op_relation |
http://www.malariajournal.com/content/11/1/262 https://doaj.org/toc/1475-2875 doi:10.1186/1475-2875-11-262 1475-2875 https://doaj.org/article/4e4829a86c274c8882931d00d0b884a2 |
op_doi |
https://doi.org/10.1186/1475-2875-11-262 |
container_title |
Malaria Journal |
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11 |
container_issue |
1 |
container_start_page |
262 |
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1766348817737711616 |