Incidence of dengue and chikungunya viruses in mosquitoes and human patients in border provinces of Vietnam
Background: Dengue virus remains a major threat in Vietnam, while chikungunya virus is expected to become one. Surveillance was conducted from 2012 to 2014 in Vietnam to assess the presence of dengue and chikungunya viruses in patients hospitalized with acute fever in five Vietnam provinces neighboring Lao PDR and Cambodia. Surveillance was extended to mosquitoes present in the vicinity of the patients' households. Results: A total 558 human serum samples were collected along with 1104 adult mosquitoes and 12,041 larvae from 2250 households. Dengue virus was found in 17 (3%) human serum samples and in 9 (0.8%) adult mosquitoes. Chikungunya virus was detected in 2 adult mosquitoes (0.18%) while no chikungunya virus was detected in humans. Differing densities of mosquito populations were found, with the highest in the Long An Province border with Cambodia. Long An Province also displayed the lowest rate of infection, despite a very high Breteau Index, high human population density and presence of the main cross border road system. The highest incidence was found in Dac Nong Province, where the Breteau and Container indices were the second lowest. Dengue virus was detected in five Aedes albopictus, three Aedes aegypti and one Culex vishnui. Chikungunya virus was detected in two Ae. aegypti. All infected mosquitoes belonged to haplotypes described in other parts of the world and a number of novel haplotypes were found among uninfected mosquitoes. Conclusions: Dengue is considered to be regularly introduced to Vietnam from Cambodia, mostly through human movement. The data reported here provides a complementary picture. Due to intensive international trade, long-distance transportation of mosquito populations may play a role in the regular importation of dengue in Vietnam through Ho Chi Minh City. It is important to decipher the movement of mosquitoes in Vietnam, not only at the Lao PDR and Cambodia borders but also through international trade routes. Mosquito surveillance programs should address and follow mosquito populations instead of mosquito species.
Main Authors: | , , , , , , , , , , , , , , , |
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Format: | article biblioteca |
Language: | eng |
Subjects: | S50 - Santé humaine, L73 - Maladies des animaux, virus de chikungunya, flavivirus, épidémiologie, maladie transfrontière, Culex, Aedes albopictus, Aedes aegypti, commerce, déplacement, http://aims.fao.org/aos/agrovoc/c_35376, http://aims.fao.org/aos/agrovoc/c_2963, http://aims.fao.org/aos/agrovoc/c_2615, http://aims.fao.org/aos/agrovoc/c_37747, http://aims.fao.org/aos/agrovoc/c_2015, http://aims.fao.org/aos/agrovoc/c_30483, http://aims.fao.org/aos/agrovoc/c_30482, http://aims.fao.org/aos/agrovoc/c_7848, http://aims.fao.org/aos/agrovoc/c_65c7772b, http://aims.fao.org/aos/agrovoc/c_12076, http://aims.fao.org/aos/agrovoc/c_4073, http://aims.fao.org/aos/agrovoc/c_8227, |
Online Access: | http://agritrop.cirad.fr/591882/ http://agritrop.cirad.fr/591882/1/Published%20provinces%20article.pdf |
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S50 - Santé humaine L73 - Maladies des animaux virus de chikungunya flavivirus épidémiologie maladie transfrontière Culex Aedes albopictus Aedes aegypti commerce déplacement http://aims.fao.org/aos/agrovoc/c_35376 http://aims.fao.org/aos/agrovoc/c_2963 http://aims.fao.org/aos/agrovoc/c_2615 http://aims.fao.org/aos/agrovoc/c_37747 http://aims.fao.org/aos/agrovoc/c_2015 http://aims.fao.org/aos/agrovoc/c_30483 http://aims.fao.org/aos/agrovoc/c_30482 http://aims.fao.org/aos/agrovoc/c_7848 http://aims.fao.org/aos/agrovoc/c_65c7772b http://aims.fao.org/aos/agrovoc/c_12076 http://aims.fao.org/aos/agrovoc/c_4073 http://aims.fao.org/aos/agrovoc/c_8227 S50 - Santé humaine L73 - Maladies des animaux virus de chikungunya flavivirus épidémiologie maladie transfrontière Culex Aedes albopictus Aedes aegypti commerce déplacement http://aims.fao.org/aos/agrovoc/c_35376 http://aims.fao.org/aos/agrovoc/c_2963 http://aims.fao.org/aos/agrovoc/c_2615 http://aims.fao.org/aos/agrovoc/c_37747 http://aims.fao.org/aos/agrovoc/c_2015 http://aims.fao.org/aos/agrovoc/c_30483 http://aims.fao.org/aos/agrovoc/c_30482 http://aims.fao.org/aos/agrovoc/c_7848 http://aims.fao.org/aos/agrovoc/c_65c7772b http://aims.fao.org/aos/agrovoc/c_12076 http://aims.fao.org/aos/agrovoc/c_4073 http://aims.fao.org/aos/agrovoc/c_8227 |
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S50 - Santé humaine L73 - Maladies des animaux virus de chikungunya flavivirus épidémiologie maladie transfrontière Culex Aedes albopictus Aedes aegypti commerce déplacement http://aims.fao.org/aos/agrovoc/c_35376 http://aims.fao.org/aos/agrovoc/c_2963 http://aims.fao.org/aos/agrovoc/c_2615 http://aims.fao.org/aos/agrovoc/c_37747 http://aims.fao.org/aos/agrovoc/c_2015 http://aims.fao.org/aos/agrovoc/c_30483 http://aims.fao.org/aos/agrovoc/c_30482 http://aims.fao.org/aos/agrovoc/c_7848 http://aims.fao.org/aos/agrovoc/c_65c7772b http://aims.fao.org/aos/agrovoc/c_12076 http://aims.fao.org/aos/agrovoc/c_4073 http://aims.fao.org/aos/agrovoc/c_8227 S50 - Santé humaine L73 - Maladies des animaux virus de chikungunya flavivirus épidémiologie maladie transfrontière Culex Aedes albopictus Aedes aegypti commerce déplacement http://aims.fao.org/aos/agrovoc/c_35376 http://aims.fao.org/aos/agrovoc/c_2963 http://aims.fao.org/aos/agrovoc/c_2615 http://aims.fao.org/aos/agrovoc/c_37747 http://aims.fao.org/aos/agrovoc/c_2015 http://aims.fao.org/aos/agrovoc/c_30483 http://aims.fao.org/aos/agrovoc/c_30482 http://aims.fao.org/aos/agrovoc/c_7848 http://aims.fao.org/aos/agrovoc/c_65c7772b http://aims.fao.org/aos/agrovoc/c_12076 http://aims.fao.org/aos/agrovoc/c_4073 http://aims.fao.org/aos/agrovoc/c_8227 Pham Thi, Kim Lien Briant, Laurence Gavotte, Laurent Labbe, Pierrick Perriat-Sanguinet, Marco Cornillot, Emmanuel Vu, Trong Duoc Nguyen, Thi Yen Tran, Vu Phong Nguyen, Van Soai Devaux, Christian Afelt, Aneta Tran, Chi Cuong Nga, Phan Thi Tran, Nhu Duong Frutos, Roger Incidence of dengue and chikungunya viruses in mosquitoes and human patients in border provinces of Vietnam |
description |
Background: Dengue virus remains a major threat in Vietnam, while chikungunya virus is expected to become one. Surveillance was conducted from 2012 to 2014 in Vietnam to assess the presence of dengue and chikungunya viruses in patients hospitalized with acute fever in five Vietnam provinces neighboring Lao PDR and Cambodia. Surveillance was extended to mosquitoes present in the vicinity of the patients' households. Results: A total 558 human serum samples were collected along with 1104 adult mosquitoes and 12,041 larvae from 2250 households. Dengue virus was found in 17 (3%) human serum samples and in 9 (0.8%) adult mosquitoes. Chikungunya virus was detected in 2 adult mosquitoes (0.18%) while no chikungunya virus was detected in humans. Differing densities of mosquito populations were found, with the highest in the Long An Province border with Cambodia. Long An Province also displayed the lowest rate of infection, despite a very high Breteau Index, high human population density and presence of the main cross border road system. The highest incidence was found in Dac Nong Province, where the Breteau and Container indices were the second lowest. Dengue virus was detected in five Aedes albopictus, three Aedes aegypti and one Culex vishnui. Chikungunya virus was detected in two Ae. aegypti. All infected mosquitoes belonged to haplotypes described in other parts of the world and a number of novel haplotypes were found among uninfected mosquitoes. Conclusions: Dengue is considered to be regularly introduced to Vietnam from Cambodia, mostly through human movement. The data reported here provides a complementary picture. Due to intensive international trade, long-distance transportation of mosquito populations may play a role in the regular importation of dengue in Vietnam through Ho Chi Minh City. It is important to decipher the movement of mosquitoes in Vietnam, not only at the Lao PDR and Cambodia borders but also through international trade routes. Mosquito surveillance programs should address and follow mosquito populations instead of mosquito species. |
format |
article |
topic_facet |
S50 - Santé humaine L73 - Maladies des animaux virus de chikungunya flavivirus épidémiologie maladie transfrontière Culex Aedes albopictus Aedes aegypti commerce déplacement http://aims.fao.org/aos/agrovoc/c_35376 http://aims.fao.org/aos/agrovoc/c_2963 http://aims.fao.org/aos/agrovoc/c_2615 http://aims.fao.org/aos/agrovoc/c_37747 http://aims.fao.org/aos/agrovoc/c_2015 http://aims.fao.org/aos/agrovoc/c_30483 http://aims.fao.org/aos/agrovoc/c_30482 http://aims.fao.org/aos/agrovoc/c_7848 http://aims.fao.org/aos/agrovoc/c_65c7772b http://aims.fao.org/aos/agrovoc/c_12076 http://aims.fao.org/aos/agrovoc/c_4073 http://aims.fao.org/aos/agrovoc/c_8227 |
author |
Pham Thi, Kim Lien Briant, Laurence Gavotte, Laurent Labbe, Pierrick Perriat-Sanguinet, Marco Cornillot, Emmanuel Vu, Trong Duoc Nguyen, Thi Yen Tran, Vu Phong Nguyen, Van Soai Devaux, Christian Afelt, Aneta Tran, Chi Cuong Nga, Phan Thi Tran, Nhu Duong Frutos, Roger |
author_facet |
Pham Thi, Kim Lien Briant, Laurence Gavotte, Laurent Labbe, Pierrick Perriat-Sanguinet, Marco Cornillot, Emmanuel Vu, Trong Duoc Nguyen, Thi Yen Tran, Vu Phong Nguyen, Van Soai Devaux, Christian Afelt, Aneta Tran, Chi Cuong Nga, Phan Thi Tran, Nhu Duong Frutos, Roger |
author_sort |
Pham Thi, Kim Lien |
title |
Incidence of dengue and chikungunya viruses in mosquitoes and human patients in border provinces of Vietnam |
title_short |
Incidence of dengue and chikungunya viruses in mosquitoes and human patients in border provinces of Vietnam |
title_full |
Incidence of dengue and chikungunya viruses in mosquitoes and human patients in border provinces of Vietnam |
title_fullStr |
Incidence of dengue and chikungunya viruses in mosquitoes and human patients in border provinces of Vietnam |
title_full_unstemmed |
Incidence of dengue and chikungunya viruses in mosquitoes and human patients in border provinces of Vietnam |
title_sort |
incidence of dengue and chikungunya viruses in mosquitoes and human patients in border provinces of vietnam |
url |
http://agritrop.cirad.fr/591882/ http://agritrop.cirad.fr/591882/1/Published%20provinces%20article.pdf |
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dig-cirad-fr-5918822024-01-29T01:48:57Z http://agritrop.cirad.fr/591882/ http://agritrop.cirad.fr/591882/ Incidence of dengue and chikungunya viruses in mosquitoes and human patients in border provinces of Vietnam. Pham Thi Kim Lien, Briant Laurence, Gavotte Laurent, Labbe Pierrick, Perriat-Sanguinet Marco, Cornillot Emmanuel, Vu Trong Duoc, Nguyen Thi Yen, Tran Vu Phong, Nguyen Van Soai, Devaux Christian, Afelt Aneta, Tran Chi Cuong, Nga Phan Thi, Tran Nhu Duong, Frutos Roger. 2017. Parasites and Vectors, 10:556, 10 p.https://doi.org/10.1186/s13071-017-2422-z <https://doi.org/10.1186/s13071-017-2422-z> Incidence of dengue and chikungunya viruses in mosquitoes and human patients in border provinces of Vietnam Pham Thi, Kim Lien Briant, Laurence Gavotte, Laurent Labbe, Pierrick Perriat-Sanguinet, Marco Cornillot, Emmanuel Vu, Trong Duoc Nguyen, Thi Yen Tran, Vu Phong Nguyen, Van Soai Devaux, Christian Afelt, Aneta Tran, Chi Cuong Nga, Phan Thi Tran, Nhu Duong Frutos, Roger eng 2017 Parasites and Vectors S50 - Santé humaine L73 - Maladies des animaux virus de chikungunya flavivirus épidémiologie maladie transfrontière Culex Aedes albopictus Aedes aegypti commerce déplacement http://aims.fao.org/aos/agrovoc/c_35376 http://aims.fao.org/aos/agrovoc/c_2963 http://aims.fao.org/aos/agrovoc/c_2615 http://aims.fao.org/aos/agrovoc/c_37747 http://aims.fao.org/aos/agrovoc/c_2015 http://aims.fao.org/aos/agrovoc/c_30483 http://aims.fao.org/aos/agrovoc/c_30482 http://aims.fao.org/aos/agrovoc/c_7848 http://aims.fao.org/aos/agrovoc/c_65c7772b République démocratique populaire lao Cambodge Viet Nam http://aims.fao.org/aos/agrovoc/c_12076 http://aims.fao.org/aos/agrovoc/c_4073 http://aims.fao.org/aos/agrovoc/c_8227 Background: Dengue virus remains a major threat in Vietnam, while chikungunya virus is expected to become one. Surveillance was conducted from 2012 to 2014 in Vietnam to assess the presence of dengue and chikungunya viruses in patients hospitalized with acute fever in five Vietnam provinces neighboring Lao PDR and Cambodia. Surveillance was extended to mosquitoes present in the vicinity of the patients' households. Results: A total 558 human serum samples were collected along with 1104 adult mosquitoes and 12,041 larvae from 2250 households. Dengue virus was found in 17 (3%) human serum samples and in 9 (0.8%) adult mosquitoes. Chikungunya virus was detected in 2 adult mosquitoes (0.18%) while no chikungunya virus was detected in humans. Differing densities of mosquito populations were found, with the highest in the Long An Province border with Cambodia. Long An Province also displayed the lowest rate of infection, despite a very high Breteau Index, high human population density and presence of the main cross border road system. The highest incidence was found in Dac Nong Province, where the Breteau and Container indices were the second lowest. Dengue virus was detected in five Aedes albopictus, three Aedes aegypti and one Culex vishnui. Chikungunya virus was detected in two Ae. aegypti. All infected mosquitoes belonged to haplotypes described in other parts of the world and a number of novel haplotypes were found among uninfected mosquitoes. Conclusions: Dengue is considered to be regularly introduced to Vietnam from Cambodia, mostly through human movement. The data reported here provides a complementary picture. Due to intensive international trade, long-distance transportation of mosquito populations may play a role in the regular importation of dengue in Vietnam through Ho Chi Minh City. It is important to decipher the movement of mosquitoes in Vietnam, not only at the Lao PDR and Cambodia borders but also through international trade routes. Mosquito surveillance programs should address and follow mosquito populations instead of mosquito species. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/591882/1/Published%20provinces%20article.pdf text cc_by info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/ https://doi.org/10.1186/s13071-017-2422-z 10.1186/s13071-017-2422-z info:eu-repo/semantics/altIdentifier/doi/10.1186/s13071-017-2422-z info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1186/s13071-017-2422-z info:eu-repo/semantics/dataset/purl/https://figshare.com/articles/journal_contribution/Additional_file_1_Table_S1_of_Incidence_of_dengue_and_chikungunya_viruses_in_mosquitoes_and_human_patients_in_border_provinces_of_Vietnam/5589010 |