Cargando…

Comparison Between Larval Survey Index and Positive Ovitrap Index in the Evaluation of Populations of Aedes (Stegomyia) aegypti (Linnaeus, 1762) North of Paraná, Brazil

Aedes (Stegomyia) aegypti (Linnaeus, 1762) is one of the world’s most widely distributed mosquitoes and is the vector of the dengue virus, one of the most important reemerging diseases. Besides dengue, A. aegypti can also transmit urban yellow fever, chikungunya, and Zika virus, making it of great m...

Descripción completa

Detalles Bibliográficos
Autores principales: Nascimento, Kauani Larissa Campana, da Silva, João Fernando Marques, Zequi, João Antonio Cyrino, Lopes, José
Formato: Online Artículo Texto
Lenguaje:English
Publicado: SAGE Publications 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6945453/
https://www.ncbi.nlm.nih.gov/pubmed/31933523
http://dx.doi.org/10.1177/1178630219886570
_version_ 1783485183591186432
author Nascimento, Kauani Larissa Campana
da Silva, João Fernando Marques
Zequi, João Antonio Cyrino
Lopes, José
author_facet Nascimento, Kauani Larissa Campana
da Silva, João Fernando Marques
Zequi, João Antonio Cyrino
Lopes, José
author_sort Nascimento, Kauani Larissa Campana
collection PubMed
description Aedes (Stegomyia) aegypti (Linnaeus, 1762) is one of the world’s most widely distributed mosquitoes and is the vector of the dengue virus, one of the most important reemerging diseases. Besides dengue, A. aegypti can also transmit urban yellow fever, chikungunya, and Zika virus, making it of great medical importance. Thus, it is of extreme importance to find reliable methods to evaluate the presence of A. aegypti in urban areas. In Brazil, rapid index surveys of Aedes aegypti by means of larval survey (LIRAa) is the official method to estimate the Breteau (BI) and property infestation (PII) indexes, which indicates how many infested containers with larvae of A. aegypti were found by the total number of properties surveyed and the proportion of houses infested, respectively. As the LIRAa requires access to private residences and trained personal to find breeding sites and do not reveal the mosquito’s presence when in low density, it has not demonstrated efficacy in determining the presence of A. aegypti. To evaluate an alternative method, the LIRAa method was compared with an oviposition trap, made with hay infusion and a hardboard pallet, to evaluate the BI and the PII. The 2 methods were carried out simultaneously through 4 surveys, sampling 60 homes per survey. To evaluate the best configuration of ovitraps for surveillance of A. aegypti, the ovitraps were installed in intradomicile and peridomicile areas, with 1 to 5 traps per residence and with 1 to 3 pallets per trap, and these different configurations were compared using the positive ovitrap index (POI) and egg density index (EDI). The ovitraps showed greater sensitivity for detecting the presence of A. aegypti, with a BI of 72.5% and PII of 54.2%, whereas the LIRAa revealed only 2.1% for the BI and 1.3% for the PII. Therefore, the use of sentinel traps can provide information in a more rapid and precise manner. As there were no differences in the ovitraps distributions patterns, the ovitraps can be installed in the peridomicile area, with 2 traps per surveillance point and 1 pallet per trap, making their installation easier and more cost-efficient, facilitating the work of health agents in future surveillances complementing LIRAa’s actions for efficient monitoring.
format Online
Article
Text
id pubmed-6945453
institution National Center for Biotechnology Information
language English
publishDate 2020
publisher SAGE Publications
record_format MEDLINE/PubMed
spelling pubmed-69454532020-01-13 Comparison Between Larval Survey Index and Positive Ovitrap Index in the Evaluation of Populations of Aedes (Stegomyia) aegypti (Linnaeus, 1762) North of Paraná, Brazil Nascimento, Kauani Larissa Campana da Silva, João Fernando Marques Zequi, João Antonio Cyrino Lopes, José Environ Health Insights Endemic Mosquito-borne Diseases and Mosquito Control in the United States Aedes (Stegomyia) aegypti (Linnaeus, 1762) is one of the world’s most widely distributed mosquitoes and is the vector of the dengue virus, one of the most important reemerging diseases. Besides dengue, A. aegypti can also transmit urban yellow fever, chikungunya, and Zika virus, making it of great medical importance. Thus, it is of extreme importance to find reliable methods to evaluate the presence of A. aegypti in urban areas. In Brazil, rapid index surveys of Aedes aegypti by means of larval survey (LIRAa) is the official method to estimate the Breteau (BI) and property infestation (PII) indexes, which indicates how many infested containers with larvae of A. aegypti were found by the total number of properties surveyed and the proportion of houses infested, respectively. As the LIRAa requires access to private residences and trained personal to find breeding sites and do not reveal the mosquito’s presence when in low density, it has not demonstrated efficacy in determining the presence of A. aegypti. To evaluate an alternative method, the LIRAa method was compared with an oviposition trap, made with hay infusion and a hardboard pallet, to evaluate the BI and the PII. The 2 methods were carried out simultaneously through 4 surveys, sampling 60 homes per survey. To evaluate the best configuration of ovitraps for surveillance of A. aegypti, the ovitraps were installed in intradomicile and peridomicile areas, with 1 to 5 traps per residence and with 1 to 3 pallets per trap, and these different configurations were compared using the positive ovitrap index (POI) and egg density index (EDI). The ovitraps showed greater sensitivity for detecting the presence of A. aegypti, with a BI of 72.5% and PII of 54.2%, whereas the LIRAa revealed only 2.1% for the BI and 1.3% for the PII. Therefore, the use of sentinel traps can provide information in a more rapid and precise manner. As there were no differences in the ovitraps distributions patterns, the ovitraps can be installed in the peridomicile area, with 2 traps per surveillance point and 1 pallet per trap, making their installation easier and more cost-efficient, facilitating the work of health agents in future surveillances complementing LIRAa’s actions for efficient monitoring. SAGE Publications 2020-01-06 /pmc/articles/PMC6945453/ /pubmed/31933523 http://dx.doi.org/10.1177/1178630219886570 Text en © The Author(s) 2020 http://creativecommons.org/licenses/by/4.0/ This article is distributed under the terms of the Creative Commons Attribution 4.0 License (http://creativecommons.org/licenses/by/4.0/) which permits any use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).
spellingShingle Endemic Mosquito-borne Diseases and Mosquito Control in the United States
Nascimento, Kauani Larissa Campana
da Silva, João Fernando Marques
Zequi, João Antonio Cyrino
Lopes, José
Comparison Between Larval Survey Index and Positive Ovitrap Index in the Evaluation of Populations of Aedes (Stegomyia) aegypti (Linnaeus, 1762) North of Paraná, Brazil
title Comparison Between Larval Survey Index and Positive Ovitrap Index in the Evaluation of Populations of Aedes (Stegomyia) aegypti (Linnaeus, 1762) North of Paraná, Brazil
title_full Comparison Between Larval Survey Index and Positive Ovitrap Index in the Evaluation of Populations of Aedes (Stegomyia) aegypti (Linnaeus, 1762) North of Paraná, Brazil
title_fullStr Comparison Between Larval Survey Index and Positive Ovitrap Index in the Evaluation of Populations of Aedes (Stegomyia) aegypti (Linnaeus, 1762) North of Paraná, Brazil
title_full_unstemmed Comparison Between Larval Survey Index and Positive Ovitrap Index in the Evaluation of Populations of Aedes (Stegomyia) aegypti (Linnaeus, 1762) North of Paraná, Brazil
title_short Comparison Between Larval Survey Index and Positive Ovitrap Index in the Evaluation of Populations of Aedes (Stegomyia) aegypti (Linnaeus, 1762) North of Paraná, Brazil
title_sort comparison between larval survey index and positive ovitrap index in the evaluation of populations of aedes (stegomyia) aegypti (linnaeus, 1762) north of paraná, brazil
topic Endemic Mosquito-borne Diseases and Mosquito Control in the United States
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6945453/
https://www.ncbi.nlm.nih.gov/pubmed/31933523
http://dx.doi.org/10.1177/1178630219886570
work_keys_str_mv AT nascimentokauanilarissacampana comparisonbetweenlarvalsurveyindexandpositiveovitrapindexintheevaluationofpopulationsofaedesstegomyiaaegyptilinnaeus1762northofparanabrazil
AT dasilvajoaofernandomarques comparisonbetweenlarvalsurveyindexandpositiveovitrapindexintheevaluationofpopulationsofaedesstegomyiaaegyptilinnaeus1762northofparanabrazil
AT zequijoaoantoniocyrino comparisonbetweenlarvalsurveyindexandpositiveovitrapindexintheevaluationofpopulationsofaedesstegomyiaaegyptilinnaeus1762northofparanabrazil
AT lopesjose comparisonbetweenlarvalsurveyindexandpositiveovitrapindexintheevaluationofpopulationsofaedesstegomyiaaegyptilinnaeus1762northofparanabrazil