Distribution of triatomine species in domestic and peridomestic environments in central coastal Ecuador.
Although the central coast of the Ecuador is considered endemic for Chagas disease, few studies have focused on determining the risk of transmission in this region. In this study we describe the triatomine household infestation in Manabí province (Central Coast region), determine the rate of Trypano...
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ftdoajarticles:oai:doaj.org/article:3ad71c02f9b74220bd61fd640330c6eb 2023-05-15T15:16:40+02:00 Distribution of triatomine species in domestic and peridomestic environments in central coastal Ecuador. Mario J Grijalva Anita G Villacís Ana L Moncayo Sofia Ocaña-Mayorga Cesar A Yumiseva Esteban G Baus 2017-10-01T00:00:00Z https://doi.org/10.1371/journal.pntd.0005970 https://doaj.org/article/3ad71c02f9b74220bd61fd640330c6eb EN eng Public Library of Science (PLoS) http://europepmc.org/articles/PMC5638615?pdf=render https://doaj.org/toc/1935-2727 https://doaj.org/toc/1935-2735 1935-2727 1935-2735 doi:10.1371/journal.pntd.0005970 https://doaj.org/article/3ad71c02f9b74220bd61fd640330c6eb PLoS Neglected Tropical Diseases, Vol 11, Iss 10, p e0005970 (2017) Arctic medicine. Tropical medicine RC955-962 Public aspects of medicine RA1-1270 article 2017 ftdoajarticles https://doi.org/10.1371/journal.pntd.0005970 2022-12-31T06:33:24Z Although the central coast of the Ecuador is considered endemic for Chagas disease, few studies have focused on determining the risk of transmission in this region. In this study we describe the triatomine household infestation in Manabí province (Central Coast region), determine the rate of Trypanosoma cruzi infection and study the risk factors associated with infestation by Rhodnius ecuadoriensis.An entomological survey found three triatomine species (Rhodnius ecuadoriensis, Panstrongylus rufotuberculatus and P. howardi) infesting domiciles in 47.4% of the 78 communities visited (total infestation rate of 4.5%). Four percent of domiciles were infested, and nymphs were observed in 77% of those domiciles. The three species were found in altitudes below 500 masl and in all ecological zones except cloud forest. Within the domicile, we found the three species mostly in bedrooms. Rhodnius ecuadoriensis and P. rufotuberculatus were abundant in bird nests, including chicken coops and P. howardi associated with rats in piles of bricks, in the peridomicile. Triatomine infestation was characterized by high rates of colonization, especially in peridomicile. Flagelates infection was detected in only 12% of the samples by microscopy and Trypanosoma cruzi infection in 42% of the examined triatomines by PCR (n = 372). The most important risk factors for house infestation by R. ecuadoriensis were ecological zone (w = 0.99) and presence of chickens (w = 0.96). Determinants of secondary importance were reporting no insecticide applications over the last twelve months (w = 0.86) and dirt floor (w = 0.70). On the other hand, wood as wall material was a protective factor (w = 0.85).According the results, approximately 571,000 people would be at high risk for T. cruzi infection in Manabí province. A multidisciplinary approximation and the adhesion to a periodic integrated vector management (IVM) program are essential to guarantee sustainable preventive and control strategies for Chagas disease in this region. Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic PLOS Neglected Tropical Diseases 11 10 e0005970 |
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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 Mario J Grijalva Anita G Villacís Ana L Moncayo Sofia Ocaña-Mayorga Cesar A Yumiseva Esteban G Baus Distribution of triatomine species in domestic and peridomestic environments in central coastal Ecuador. |
topic_facet |
Arctic medicine. Tropical medicine RC955-962 Public aspects of medicine RA1-1270 |
description |
Although the central coast of the Ecuador is considered endemic for Chagas disease, few studies have focused on determining the risk of transmission in this region. In this study we describe the triatomine household infestation in Manabí province (Central Coast region), determine the rate of Trypanosoma cruzi infection and study the risk factors associated with infestation by Rhodnius ecuadoriensis.An entomological survey found three triatomine species (Rhodnius ecuadoriensis, Panstrongylus rufotuberculatus and P. howardi) infesting domiciles in 47.4% of the 78 communities visited (total infestation rate of 4.5%). Four percent of domiciles were infested, and nymphs were observed in 77% of those domiciles. The three species were found in altitudes below 500 masl and in all ecological zones except cloud forest. Within the domicile, we found the three species mostly in bedrooms. Rhodnius ecuadoriensis and P. rufotuberculatus were abundant in bird nests, including chicken coops and P. howardi associated with rats in piles of bricks, in the peridomicile. Triatomine infestation was characterized by high rates of colonization, especially in peridomicile. Flagelates infection was detected in only 12% of the samples by microscopy and Trypanosoma cruzi infection in 42% of the examined triatomines by PCR (n = 372). The most important risk factors for house infestation by R. ecuadoriensis were ecological zone (w = 0.99) and presence of chickens (w = 0.96). Determinants of secondary importance were reporting no insecticide applications over the last twelve months (w = 0.86) and dirt floor (w = 0.70). On the other hand, wood as wall material was a protective factor (w = 0.85).According the results, approximately 571,000 people would be at high risk for T. cruzi infection in Manabí province. A multidisciplinary approximation and the adhesion to a periodic integrated vector management (IVM) program are essential to guarantee sustainable preventive and control strategies for Chagas disease in this region. |
format |
Article in Journal/Newspaper |
author |
Mario J Grijalva Anita G Villacís Ana L Moncayo Sofia Ocaña-Mayorga Cesar A Yumiseva Esteban G Baus |
author_facet |
Mario J Grijalva Anita G Villacís Ana L Moncayo Sofia Ocaña-Mayorga Cesar A Yumiseva Esteban G Baus |
author_sort |
Mario J Grijalva |
title |
Distribution of triatomine species in domestic and peridomestic environments in central coastal Ecuador. |
title_short |
Distribution of triatomine species in domestic and peridomestic environments in central coastal Ecuador. |
title_full |
Distribution of triatomine species in domestic and peridomestic environments in central coastal Ecuador. |
title_fullStr |
Distribution of triatomine species in domestic and peridomestic environments in central coastal Ecuador. |
title_full_unstemmed |
Distribution of triatomine species in domestic and peridomestic environments in central coastal Ecuador. |
title_sort |
distribution of triatomine species in domestic and peridomestic environments in central coastal ecuador. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2017 |
url |
https://doi.org/10.1371/journal.pntd.0005970 https://doaj.org/article/3ad71c02f9b74220bd61fd640330c6eb |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
PLoS Neglected Tropical Diseases, Vol 11, Iss 10, p e0005970 (2017) |
op_relation |
http://europepmc.org/articles/PMC5638615?pdf=render https://doaj.org/toc/1935-2727 https://doaj.org/toc/1935-2735 1935-2727 1935-2735 doi:10.1371/journal.pntd.0005970 https://doaj.org/article/3ad71c02f9b74220bd61fd640330c6eb |
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https://doi.org/10.1371/journal.pntd.0005970 |
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PLOS Neglected Tropical Diseases |
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11 |
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10 |
container_start_page |
e0005970 |
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