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Cited by 14Malaria Research and ControlDengue and Mosquito Control ResearchInsect Pest Control Strategies

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Evaluation of long-lasting indoor residual spraying of deltamethrin 62.5 SC-PE against malaria vectors in India

Open access
Sahu, Sudhansu Sekhar, Thankachy, Sonia, Dash, Smrutidhara, Nallan, Krishnamoorthy, Swaminathan, Subramanian, Kasinathan, Gunasekaran, Purushothaman, Jambulingam·2020·Malaria Journal
DOI 10.1186/s12936-020-3112-4PMC PMC6961237
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Abstract

Background: Deltamethrin 62.5 polymer-enhanced suspension concentrate (SC-PE) is one of the World Health Organization-approved insecticides for indoor residual spraying and was recommended to evaluate its residual activity for determination of appropriate spray cycles in different eco-epidemiologic settings. In the current study, efficacy of deltamethrin 62.5 SC-PE was evaluated against vectors of malaria and its impact on malaria incidence in a Plasmodium falciparum hyper-endemic area in Koraput district, Odisha State, India. Methods: The trial had two comparable arms, arm 1 with residual spraying of deltamethrin 62.5 SC-PE and arm 2 with deltamethrin 2.5% WP (positive control). Comparative assessment of the impact of each intervention arm on entomological (density, parity, infection and human blood index), epidemiological (malaria incidence) parameters, residual efficacy and adverse effects were evaluated. Results: Both the arms were comparable in terms of entomological and epidemiological parameters. While, deltamethrin 62.5 SC-PE was found to be effective for 150 days in mud and wood surfaces and 157 days in cement surfaces; deltamethrin 2.5% was effective only for 105 days on mud surfaces and 113 days on cement and wood surfaces. Conclusions: Deltamethrin 62.5 SC-PE had prolonged killing effectiveness up to 5 months. Hence, one round of IRS with deltamethrin 62.5 SC-PE would be sufficient to cover two existing malaria peak transmission seasons (July–August and October–November) in many parts of India.

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Crossref · 10.1186/s12936-020-3112-4

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Figures

Fig. 1 Map showing the study area
Fig. 1 Map showing the study areaCC BY · PubMed Central
Fig. 2 a, b Relative abundance of An. fluviatilis indoors and outdoors prior to and post-spraying
Fig. 2 a, b Relative abundance of An. fluviatilis indoors and outdoors prior to and post-sprayingCC BY · PubMed Central
Fig. 3 a, b Relative abundance of An. culicifacies indoors and outdoors prior to and post-spraying
Fig. 3 a, b Relative abundance of An. culicifacies indoors and outdoors prior to and post-sprayingCC BY · PubMed Central
Fig. 4 Mosquito mortality in bioassays done on three sprayed surfaces in arm 1
Fig. 4 Mosquito mortality in bioassays done on three sprayed surfaces in arm 1CC BY · PubMed Central
Fig. 5 Mosquito mortality in bioassays done on three sprayed surfaces in arm 2
Fig. 5 Mosquito mortality in bioassays done on three sprayed surfaces in arm 2CC BY · PubMed Central
Fig. 6 Malaria incidence in arm 1 and arm 2 before and after spraying
Fig. 6 Malaria incidence in arm 1 and arm 2 before and after sprayingCC BY · PubMed Central

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Cites

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Cited by

Metadata

Authors
Sahu, S. S., Thankachy, S., Dash, S., Nallan, K., Swaminathan, S., Kasinathan, G., & Purushothaman, J.
Affiliations
Indian Council of Medical Research (IN)
Corresponding author
Sahu, Sudhansu Sekhar
ORCID
Venue
Malaria Journal
Publisher
Springer Science and Business Media LLC
Published
2020-01-14
Volume
19
Issue
1
Pages
19-19
ISSN
1475-2875 (ISSN-L)
DOI
10.1186/s12936-020-3112-4
PMC
PMC6961237
OpenAlex
W3012923215
Cited by
14
References
1
Citations by year
2026: 2 · 2025: 1 · 2024: 3 · 2023: 3 · 2022: 1 · 2021: 3 · 2020: 1
FWCI
1.50
Type
journal article
Language
en
Open access
Licence
Locations
  • Malaria Journal (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
Bayer CropScience (2017)
Topics
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Malaria Research and Control
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Dengue and Mosquito Control Research
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Insect Pest Control Strategies
Keywords
indoor residual spraying, deltamethrin, malaria vectors, residual efficacy, Plasmodium falciparum, malaria incidence, vector density, human blood index, malaria vector control, Koraput district
MeSH terms
Adult, Aerosols, Animals, Anopheles, Female, Housing, Humans, India, Insect Vectors, Insecticides, Interviews as Topic, Male, Middle Aged, Mosquito Control, Nitriles, Pesticide Residues, Plasmodium falciparum, Pyrethrins, Surveys and Questionnaires, Random Allocation, Seasons, Suspensions, Time Factors, Incidence, Cluster Analysis, Malaria, Falciparum, Endemic Diseases, Young Adult

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