2012
DOI: 10.1603/me11157
|View full text |Cite
|
Sign up to set email alerts
|

Unexpected Failures to Control Chagas Disease Vectors With Pyrethroid Spraying in Northern Argentina

Abstract: Effectiveness of the elimination efforts against Triatoma infestans (Klug) in South America through residual application of pyrethroid insecticides has been highly variable in the Gran Chaco region. We investigated apparent vector control failures after a standard community-wide spraying with deltamethrin SC in a rural area of northeastern Argentina encompassing 353 houses. Insecticide spraying reduced house infestation less than expected: from 49.5% at baseline to 12.3 and 6.7% at 4 and 8 mo postspraying, res… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
1
1
1

Citation Types

7
84
1

Year Published

2013
2013
2021
2021

Publication Types

Select...
6
3

Relationship

2
7

Authors

Journals

citations
Cited by 70 publications
(92 citation statements)
references
References 24 publications
(38 reference statements)
7
84
1
Order By: Relevance
“…Similarly to what was observed in S. Mazza, T. infestans populations of a neighboring area (Pampa del Indio, Chaco) located 40 km from La Esperanza, presented significantly lower levels of resistance to deltamethrin despite their geographical proximity (Gurevitz et al, 2012).…”
Section: Detection Of Insecticide Resistance In Triatominessupporting
confidence: 71%
“…Similarly to what was observed in S. Mazza, T. infestans populations of a neighboring area (Pampa del Indio, Chaco) located 40 km from La Esperanza, presented significantly lower levels of resistance to deltamethrin despite their geographical proximity (Gurevitz et al, 2012).…”
Section: Detection Of Insecticide Resistance In Triatominessupporting
confidence: 71%
“…before and after fumigation was similar for all revisiting times. This finding is controversial, because the expected effectiveness of the insecticide is supposed to last a few months and decay with time (Gurevitz et al, 2012;Gürtler et al, 2004). We see a homogenous average drop in the I.I.…”
Section: Discussionmentioning
confidence: 75%
“…These methods showed success in some regions but seem to be of limited effectiveness where insect populations live in sylvatic cycles and represent a continuous risk of house infestation (Guhl et al, 2009). In addition, the residual effect of the insecticide seems to vary widely between studies (Gurevitz et al, 2012).The Casanare Department in the Orinoco region of Colombia (Figure 1), was subject to a control program led by the health authorities from 1997 to 2002. Entomological surveys were performed in several localities followed by fumigation with insecticide and were re-assessed for insects at different points in time.…”
Section: Introductionmentioning
confidence: 99%
“…Repeated rounds of spraying could also lead to reduced susceptibility of insect populations to insecticides. 6 Since the description of Chagas disease, it has been known that rustic or deteriorated human domiciles provide conditions that allow triatomine infestation and colonization, 7 increasing the contact between humans and vectors and the risk of parasite transmission. Improving the domicile could provide long-term protection against the insect vectors by reducing infestation and preventing reinfestation.…”
Section: Introductionmentioning
confidence: 99%