Abstract
We used sentinel animal enclosures to measure the rate of infestation by the Chagas disease vector, Triatoma infestans, in an urban community of Arequipa, Peru, and to evaluate the effect of deltamethrin-impregnated netting on that rate. Impregnated netting decreased the rate of infestation of sentinel enclosures (rate ratio, 0.23; 95% confidence interval, 0.13-0.38; P <0.001), controlling for the density of surrounding vector populations and the distance of these to the sentinel enclosures. Most migrant insects were early-stage nymphs, which are less likely to carry the parasitic agent of Chagas disease, Trypanosoma cruzi. Spread of the vector in the city therefore likely precedes spread of the parasite. Netting was particularly effective against adult insects and late-stage nymphs; taking into account population structure, netting decreased the reproductive value of migrant populations from 443.6 to 40.5. Impregnated netting can slow the spread of T. infestans and is a potentially valuable tool in the control of Chagas disease.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 528-534 |
| Number of pages | 7 |
| Journal | American Journal of Tropical Medicine and Hygiene |
| Volume | 79 |
| Issue number | 4 |
| State | Published - Oct 2008 |
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ASJC Scopus subject areas
- Parasitology
- Infectious Diseases
- Virology
Cite this
Impregnated netting slows infestation by Triatoma infestans. / Levy, Michael Z.; Quíspe-Machaca, Victor R.; Ylla-Velasquez, Jose L.; Waller, Lance A.; Richards, Jean M.; Rath, Bruno; Borrini-Mayori, Katty; Cornejo Del Carpio, Juan G.; Cordova-Benzaquen, Eleazar; McKenzie, F. Ellis; Wirtz, Robert A.; Maguire, James H.; Gilman, Robert H; Bern, Caryn.
In: American Journal of Tropical Medicine and Hygiene, Vol. 79, No. 4, 10.2008, p. 528-534.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Impregnated netting slows infestation by Triatoma infestans
AU - Levy, Michael Z.
AU - Quíspe-Machaca, Victor R.
AU - Ylla-Velasquez, Jose L.
AU - Waller, Lance A.
AU - Richards, Jean M.
AU - Rath, Bruno
AU - Borrini-Mayori, Katty
AU - Cornejo Del Carpio, Juan G.
AU - Cordova-Benzaquen, Eleazar
AU - McKenzie, F. Ellis
AU - Wirtz, Robert A.
AU - Maguire, James H.
AU - Gilman, Robert H
AU - Bern, Caryn
PY - 2008/10
Y1 - 2008/10
N2 - We used sentinel animal enclosures to measure the rate of infestation by the Chagas disease vector, Triatoma infestans, in an urban community of Arequipa, Peru, and to evaluate the effect of deltamethrin-impregnated netting on that rate. Impregnated netting decreased the rate of infestation of sentinel enclosures (rate ratio, 0.23; 95% confidence interval, 0.13-0.38; P <0.001), controlling for the density of surrounding vector populations and the distance of these to the sentinel enclosures. Most migrant insects were early-stage nymphs, which are less likely to carry the parasitic agent of Chagas disease, Trypanosoma cruzi. Spread of the vector in the city therefore likely precedes spread of the parasite. Netting was particularly effective against adult insects and late-stage nymphs; taking into account population structure, netting decreased the reproductive value of migrant populations from 443.6 to 40.5. Impregnated netting can slow the spread of T. infestans and is a potentially valuable tool in the control of Chagas disease.
AB - We used sentinel animal enclosures to measure the rate of infestation by the Chagas disease vector, Triatoma infestans, in an urban community of Arequipa, Peru, and to evaluate the effect of deltamethrin-impregnated netting on that rate. Impregnated netting decreased the rate of infestation of sentinel enclosures (rate ratio, 0.23; 95% confidence interval, 0.13-0.38; P <0.001), controlling for the density of surrounding vector populations and the distance of these to the sentinel enclosures. Most migrant insects were early-stage nymphs, which are less likely to carry the parasitic agent of Chagas disease, Trypanosoma cruzi. Spread of the vector in the city therefore likely precedes spread of the parasite. Netting was particularly effective against adult insects and late-stage nymphs; taking into account population structure, netting decreased the reproductive value of migrant populations from 443.6 to 40.5. Impregnated netting can slow the spread of T. infestans and is a potentially valuable tool in the control of Chagas disease.
UR - http://www.scopus.com/inward/record.url?scp=53749096984&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=53749096984&partnerID=8YFLogxK
M3 - Article
C2 - 18840739
AN - SCOPUS:53749096984
VL - 79
SP - 528
EP - 534
JO - American Journal of Tropical Medicine and Hygiene
JF - American Journal of Tropical Medicine and Hygiene
SN - 0002-9637
IS - 4
ER -