Efficacy of Mosquito Coils: Cross-resistance to Pyrethroids in Aedes aegypti (Diptera: Culicidae) From Indonesia

Amelia-Yap, Zheng Hua; Sofian‐Azirun, Mohd; Suana, I Wayan; Harmonis, Harmonis; Syahputra, Edi; Razak, Abdul; Low, Van Lun

doi:10.1093/jee/toy296

Cited by 24 publications

(37 citation statements)

References 18 publications

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“…Our finding of FTPE efficacy is consistent with previous studies evaluating transfluthrin against Anopheles arabiensis and Ae. aegypti mosquitoes [31][32][33]. However, we may not generalize that these transfluthrintreated passive emanators provide protection in all geographical locations.…”

Section: Discussionmentioning

confidence: 99%

Semi-field evaluation of freestanding transfluthrin passive emanators and the BG sentinel trap as a “push-pull control strategy” against Aedes aegypti mosquitoes

et al. 2020

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Background: Spatial repellents that drive mosquitoes away from treated areas, and odour-baited traps, that attract and kill mosquitoes, can be combined and work synergistically in a push-pull system. Push-pull systems have been shown to reduce house entry and outdoor biting rates of malaria vectors and so have the potential to control other outdoor biting mosquitoes such as Aedes aegypti that transmit arboviral diseases. In this study, semi-field experiments were conducted to evaluate whether a push-pull system could be used to reduce bites from Aedes mosquitoes. Methods: The push and pull under investigation consisted of two freestanding transfluthrin passive emanators (FTPE) and a BG sentinel trap (BGS) respectively. The FTPE contained hessian strips treated with 5.25 g of transfluthrin active ingredient. The efficacies of FTPE and BGS alone and in combination were evaluated by human landing catch in a large semi-field system in Tanzania. We also investigated the protection of FTPE over six months. The data were analyzed using generalized linear mixed models with binomial distribution. Results: Two FTPE had a protective efficacy (PE) of 61.2% (95% confidence interval (CI): 52.2-69.9%) against the human landing of Ae. aegypti. The BGS did not significantly reduce mosquito landings; the PE was 2.1% (95% CI: −2.9-7.2%). The push-pull provided a PE of 64.5% (95% CI: 59.1-69.9%). However, there was no significant difference in the PE between the push-pull and the two FTPE against Ae. aegypti (P = 0.30). The FTPE offered significant protection against Ae. aegypti at month three, with a PE of 46.4% (95% CI: 41.1-51.8%), but not at six months with a PE of 2.2% (95% CI: −9.0-14.0%). Conclusions: The PE of the FTPE and the full push-pull are similar, indicative that bite prevention is primarily due to the activity of the FTPE. While these results are encouraging for the FTPE, further work is needed for a push-pull system to be recommended for Ae. aegypti control. The three-month protection against Ae. aegypti bites suggests that FTPE would be a useful additional control tool during dengue outbreaks, that does not require regular user compliance.

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Section: Discussionmentioning

confidence: 99%

Semi-field evaluation of freestanding transfluthrin passive emanators and the BG sentinel trap as a “push-pull control strategy” against Aedes aegypti mosquitoes

et al. 2020

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“…Our finding of FTPE efficacy as a spatial repellent is consistent with previous studies evaluating transfluthrin against Anopheles arabiensis and Ae. aegypti mosquitoes [32][33][34]. However, we may not generalize that these transfluthrin treated passive emanators provide protection in all geographical locations.…”

Section: Discussionmentioning

confidence: 99%

Semi Field Evaluation of Freestanding Transfluthrin Passive Emanators and the BG Sentinel Trap as a “Push-Pull control Strategy” Against Aedes aegypti Mosquitoes

Tambwe

Moore

Chilumba

et al. 2020

Preprint

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Background The use of volatile pyrethroids and odor-baited traps in a push-pull system has been shown to reduce house entry and outdoor bites for malaria vectors. This technology has the potential to control other outdoor biting mosquitoes such as Aedes aegypti that transmit arboviral diseases. In this study, semi-field experiments were conducted to evaluate whether a push-pull system could be used to reduce bites from Aedes.Methods The push and pull under investigation consisted of two freestanding transfluthrin passive emanators (FTPE), and a BG sentinel trap (BGS) respectively. The FTPE contained hessian strips treated with 5.25 g of transfluthrin active ingredient. The efficacies of FTPE and BGS alone and in combination were evaluated by human landing catch in a large semi-field system in Tanzania. We also investigated the protection of FTPE over six months. The data was analyzed using generalized linear mixed models with binomial distribution.Results Two FTPE have a protective efficacy (PE) of 61% (95% Confidence interval (CI): 52.18–69.91) against human landing rate of Aedes aegypti. The BGS did not significantly reduce mosquito landings; the PE was 2.14% (95% CI: -2.87-7.16). The combination of FTPE and BGS (push-pull) provided the PE of 64.46% (95% CI: 59.06–69.85). However, there was no significant difference in the protective efficacy between the push-pull and the two FTPE against Ae. aegypti (p = 0.286). The FTPE offered significant protection against Ae. aegypti at month three, with a PE of 46.44% (95% CI: 41.12–51.76), but not at six months with a PE of 2.20% (95% CI: -9.00-14.02).Conclusions The protective efficacy of the FTPE and the full push-pull system are similar, indicative that bite prevention is primarily due to the activity of the FTPE. While these results are encouraging for the FTPE, further work is needed for a push-pull system to be recommended for Ae. aegypti control. The three-month protection provided by the FTPE against Ae. aegypti bites suggests it would be a useful additional personal protection tool during dengue outbreaks, that does not require regular user compliance.

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“…PLOS NEGLECTED TROPICAL DISEASES [37] and are generally found in household insecticides [38,39] as well as in products that guard against ectoparasites in domestic animals [40]. Pyrethroids were recently introduced as a vector management tool against mosquitoes by the MOHW, Jamaica (pers comm.…”

Section: Discussionmentioning

confidence: 99%

Screening of insecticide resistance in Aedes aegypti populations collected from parishes in Eastern Jamaica

Francis

Campbell²,

McKenzie³

et al. 2020

PLoS Negl Trop Dis

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Efficacy of Mosquito Coils: Cross-resistance to Pyrethroids in Aedes aegypti (Diptera: Culicidae) From Indonesia

Cited by 24 publications

References 18 publications

Semi-field evaluation of freestanding transfluthrin passive emanators and the BG sentinel trap as a “push-pull control strategy” against Aedes aegypti mosquitoes

Semi-field evaluation of freestanding transfluthrin passive emanators and the BG sentinel trap as a “push-pull control strategy” against Aedes aegypti mosquitoes

Semi Field Evaluation of Freestanding Transfluthrin Passive Emanators and the BG Sentinel Trap as a “Push-Pull control Strategy” Against Aedes aegypti Mosquitoes

Screening of insecticide resistance in Aedes aegypti populations collected from parishes in Eastern Jamaica

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