Improved vector control of Triatoma infestans limited by emerging pyrethroid resistance across an urban-to-rural gradient in the Argentine Chaco
Parasites e Vectors
; 14(1): -, 2021.
Article
em En
| BVSDIP, FIOCRUZ
| ID: dip-4898
Biblioteca responsável:
BR1719.1
ABSTRACT
Background:
The sustainable elimination of Triatoma infestans in the Gran Chaco region represents an enduring challenge. Following the limited effects of a routine pyrethroid insecticide spraying campaign conducted over 2011-2013 (first period) in Avia Terai, an endemic municipality with approximately 2300 houses, we implemented a rapid-impact intervention package to suppress house infestation across the urban-to-rural gradient over 2015-2019 (second period). Here, we assess their impacts and whether persisting infestations were associated with pyrethroid resistance.Methods:
The 2011-2013 campaign achieved a limited detection and spray coverage across settings (< 68 per cent), more so during the surveillance phase. Following community mobilization and school-based interventions, the 2015-2019 program assessed baseline house infestation using a stratified sampling strategy; sprayed all rural houses with suspension concentrate beta-cypermethrin, and selectively sprayed infested and adjacent houses in urban and peri-urban settings; and monitored house infestation and performed selective treatments over the follow-up.
Texto completo:
1
Coleção Fiocruz:
BVSDIP
Base de dados:
BVSDIP
/
FIOCRUZ
País/Região como assunto:
America do sul
/
Argentina
Idioma:
En
Ano de publicação:
2021
Tipo de documento:
Article