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Small-scale evaluation of the efficacy and residual activity of alpha-cypermethrin WG (250 g AI/kg) for indoor spraying in comparison with alpha-cypermethrin WP (50 g AI/kg) in India

Overview of attention for article published in Malaria Journal, May 2015
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Title
Small-scale evaluation of the efficacy and residual activity of alpha-cypermethrin WG (250 g AI/kg) for indoor spraying in comparison with alpha-cypermethrin WP (50 g AI/kg) in India
Published in
Malaria Journal, May 2015
DOI 10.1186/s12936-015-0739-7
Pubmed ID
Authors

Sreehari Uragayala, Raghavendra Kamaraju, Satyanarayana Tiwari, Sushanta Kumar Ghosh, Neena Valecha

Abstract

Indoor residual spraying (IRS) with different formulations of insecticides is being used for the control of mosquito vectors in many countries. In the present study, residual efficacy and duration of effectiveness of IRS with alpha-cypermethrin WG-SB (250 g AI/m(2)) formulation was compared with WP formulation (50 g AI/kg) in a small scale (Phase II) field trial. Two dosages, i.e. 20 and 30 mg AI/m(2), were used and the efficacy and duration of effectiveness was assessed on alpha-cypermethrin susceptible population of Anopheles stephensi. Four types of surfaces were selected, namely cement wall with distemper coating, cement wall with lime coating, mud wall with lime coating, and brick wall unpainted. Spraying was carried out with Hudson sprayer fitted with control flow valve. Bioassays were carried out at weekly and then fortnightly intervals. Chemical analysis of filter paper samples collected from the sprayed surfaces was done at Walloon Agricultural Research Institute, Gembloux, Belgium. Alpha-cypermethrin WG-SB showed residual efficacy (>80 % mortality) for 13-15 weeks for the 20 mg/m(2) dosage and 13-16 weeks for the 30 mg/m(2) dosage, whereas alpha-cypermethrin WP showed residual efficacy for 11-15 weeks for the 20 mg/m(2) dosage and 11-14 weeks for the 30 mg/m(2) dosage on the surfaces tested. The average of the applied to target dose ratio ranged from 0.89 to 1.17 for alpha-cypermethrin WG-SB at 20 mg AI/m(2), 0.83-1.80 for the WG-SB at 30 mg AI/m(2), 0.87-1.66 for alpha-cypermethrin WP at 20 mg AI/m(2), and 0.68-1.06 for WP at 30 mg AI/m(2). No adverse events were reported, either by the spray men or the household inhabitants, during and after the spray operations. The results suggest that the dose of WG 30 mg/m(2) gave slightly longer effective residual action against malaria vector (16 weeks) on most common indoor surfaces and could be used for effective control of Anopheles mosquitoes. The WG formulation was found to be easy to handle, no smell was reported during the spraying and was found to be operationally acceptable for indoor residual spraying.

Twitter Demographics

The data shown below were collected from the profile of 1 tweeter who shared this research output. Click here to find out more about how the information was compiled.

Mendeley readers

The data shown below were compiled from readership statistics for 34 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 34 100%

Demographic breakdown

Readers by professional status Count As %
Student > Master 7 21%
Student > Ph. D. Student 5 15%
Researcher 4 12%
Student > Bachelor 3 9%
Student > Doctoral Student 2 6%
Other 6 18%
Unknown 7 21%
Readers by discipline Count As %
Agricultural and Biological Sciences 8 24%
Medicine and Dentistry 7 21%
Social Sciences 2 6%
Biochemistry, Genetics and Molecular Biology 1 3%
Nursing and Health Professions 1 3%
Other 5 15%
Unknown 10 29%

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 28 May 2015.
All research outputs
#4,290,379
of 5,160,020 outputs
Outputs from Malaria Journal
#1,780
of 2,054 outputs
Outputs of similar age
#142,293
of 173,176 outputs
Outputs of similar age from Malaria Journal
#115
of 125 outputs
Altmetric has tracked 5,160,020 research outputs across all sources so far. This one is in the 1st percentile – i.e., 1% of other outputs scored the same or lower than it.
So far Altmetric has tracked 2,054 research outputs from this source. They receive a mean Attention Score of 3.9. This one is in the 1st percentile – i.e., 1% of its peers scored the same or lower than it.
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We're also able to compare this research output to 125 others from the same source and published within six weeks on either side of this one. This one is in the 1st percentile – i.e., 1% of its contemporaries scored the same or lower than it.