Trypanosoma cruzi infection in Triatoma infestans and other triatomines: long-term effects of a control program in rural northwestern Argentina
The prevalence of Trypanosoma cruzi infection in Triatoma infestans, Triatoma guasayana, and Triatoma sordida was evaluated in Amamá and other neighboring rural villages in northwestern Argentina for five years after massive spraying with deltamethrin in 1992 and selective sprays thereafter. Local r...
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Pan American Health Organization
1999
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ftdoajarticles:oai:doaj.org/article:2eee689da7af4735bcea8946d06a9213 2023-05-15T15:11:06+02:00 Trypanosoma cruzi infection in Triatoma infestans and other triatomines: long-term effects of a control program in rural northwestern Argentina Cecere María C. Castañera Mónica B. Canale Delmi M. Chuit Roberto Gürtler Ricardo E. 1999-01-01T00:00:00Z https://doaj.org/article/2eee689da7af4735bcea8946d06a9213 EN ES PT eng spa por Pan American Health Organization http://www.scielosp.org/scielo.php?script=sci_arttext&pid=S1020-49891999000500003 https://doaj.org/toc/1020-4989 1020-4989 https://doaj.org/article/2eee689da7af4735bcea8946d06a9213 Revista Panamericana de Salud Pública, Vol 5, Iss 6, Pp 392-399 (1999) Medicine R Arctic medicine. Tropical medicine RC955-962 Public aspects of medicine RA1-1270 article 1999 ftdoajarticles 2022-12-31T09:33:16Z The prevalence of Trypanosoma cruzi infection in Triatoma infestans, Triatoma guasayana, and Triatoma sordida was evaluated in Amamá and other neighboring rural villages in northwestern Argentina for five years after massive spraying with deltamethrin in 1992 and selective sprays thereafter. Local residents and expert staff collected triatomines in domiciliary and peridomestic sites. During 1993-1997, the prevalence of T. cruzi was 2.4% in 664 T. infestans, 0.7% in 268 T. guasayana, and 0.2% in 832 T. sordida. T. cruzi infection was more frequently detected in adult bugs and in triatomines collected at domiciliary sites. The infected T. guasayana and T. sordida were nymphs and adults, respectively, captured at peridomestic sites. The prevalence of T. cruzi infection in T. infestans decreased from 7.7% to 1.5% during the surveillance period, although that change was not statistically significant. Comparison of T. infestans infection rates before the control program and during surveillance showed a highly significant decrease from 49% to 4.6% in bedrooms, as well as a fall from 6% to 1.8% in peridomestic sites. Because of its infection with T. cruzi and frequent invasion of domiciliary areas and attacks on humans and dogs, T. guasayana appeared implicated as a putative secondary vector of T. cruzi in domestic and peridomestic sites during the surveillance period. T. sordida was the most abundant species, but it was strongly associated with chickens and showed little tendency to invade bedrooms. Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic Argentina |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English Spanish Portuguese |
topic |
Medicine R Arctic medicine. Tropical medicine RC955-962 Public aspects of medicine RA1-1270 |
spellingShingle |
Medicine R Arctic medicine. Tropical medicine RC955-962 Public aspects of medicine RA1-1270 Cecere María C. Castañera Mónica B. Canale Delmi M. Chuit Roberto Gürtler Ricardo E. Trypanosoma cruzi infection in Triatoma infestans and other triatomines: long-term effects of a control program in rural northwestern Argentina |
topic_facet |
Medicine R Arctic medicine. Tropical medicine RC955-962 Public aspects of medicine RA1-1270 |
description |
The prevalence of Trypanosoma cruzi infection in Triatoma infestans, Triatoma guasayana, and Triatoma sordida was evaluated in Amamá and other neighboring rural villages in northwestern Argentina for five years after massive spraying with deltamethrin in 1992 and selective sprays thereafter. Local residents and expert staff collected triatomines in domiciliary and peridomestic sites. During 1993-1997, the prevalence of T. cruzi was 2.4% in 664 T. infestans, 0.7% in 268 T. guasayana, and 0.2% in 832 T. sordida. T. cruzi infection was more frequently detected in adult bugs and in triatomines collected at domiciliary sites. The infected T. guasayana and T. sordida were nymphs and adults, respectively, captured at peridomestic sites. The prevalence of T. cruzi infection in T. infestans decreased from 7.7% to 1.5% during the surveillance period, although that change was not statistically significant. Comparison of T. infestans infection rates before the control program and during surveillance showed a highly significant decrease from 49% to 4.6% in bedrooms, as well as a fall from 6% to 1.8% in peridomestic sites. Because of its infection with T. cruzi and frequent invasion of domiciliary areas and attacks on humans and dogs, T. guasayana appeared implicated as a putative secondary vector of T. cruzi in domestic and peridomestic sites during the surveillance period. T. sordida was the most abundant species, but it was strongly associated with chickens and showed little tendency to invade bedrooms. |
format |
Article in Journal/Newspaper |
author |
Cecere María C. Castañera Mónica B. Canale Delmi M. Chuit Roberto Gürtler Ricardo E. |
author_facet |
Cecere María C. Castañera Mónica B. Canale Delmi M. Chuit Roberto Gürtler Ricardo E. |
author_sort |
Cecere María C. |
title |
Trypanosoma cruzi infection in Triatoma infestans and other triatomines: long-term effects of a control program in rural northwestern Argentina |
title_short |
Trypanosoma cruzi infection in Triatoma infestans and other triatomines: long-term effects of a control program in rural northwestern Argentina |
title_full |
Trypanosoma cruzi infection in Triatoma infestans and other triatomines: long-term effects of a control program in rural northwestern Argentina |
title_fullStr |
Trypanosoma cruzi infection in Triatoma infestans and other triatomines: long-term effects of a control program in rural northwestern Argentina |
title_full_unstemmed |
Trypanosoma cruzi infection in Triatoma infestans and other triatomines: long-term effects of a control program in rural northwestern Argentina |
title_sort |
trypanosoma cruzi infection in triatoma infestans and other triatomines: long-term effects of a control program in rural northwestern argentina |
publisher |
Pan American Health Organization |
publishDate |
1999 |
url |
https://doaj.org/article/2eee689da7af4735bcea8946d06a9213 |
geographic |
Arctic Argentina |
geographic_facet |
Arctic Argentina |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Revista Panamericana de Salud Pública, Vol 5, Iss 6, Pp 392-399 (1999) |
op_relation |
http://www.scielosp.org/scielo.php?script=sci_arttext&pid=S1020-49891999000500003 https://doaj.org/toc/1020-4989 1020-4989 https://doaj.org/article/2eee689da7af4735bcea8946d06a9213 |
_version_ |
1766342002343936000 |