Improving the performance of spray operators through monitoring
and evaluation of insecticide concentrationsof pirimiphos-methyl during indoor residual spraying for malaria control on Bioko Island

Godwin Fuseini; Hanafy Mahmoud; Michael E. Von Fricken; Thomas A. Weppelmann; Jordan Smith; Rhiannon Agnes Ellis Logan; Sade Oladepo; Kyle Walker; Wonder P. Phiri; Mark Paine; Guillermo A. Garciá

doi:10.1186/s12936-020-3118-y

Improving the performance of spray operators through monitoring and evaluation of insecticide concentrationsof pirimiphos-methyl during indoor residual spraying for malaria control on Bioko Island

Godwin Fuseini, Hanafy Mahmoud, Michael E. Von Fricken, Thomas A. Weppelmann, Jordan Smith, Rhiannon Agnes Ellis Logan, Sade Oladepo, Kyle Walker, Wonder P. Phiri, Mark Paine, Guillermo A. Garciá

Vector Biology

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

Background: Quality control of indoor residual spraying (IRS) is necessary to ensure that spray operators (SOs)

deposit the correct concentration of insecticide on sprayed structures, while also confrming that spray records are not being falsifed.

Methods: Using high-performance liquid chromatography (HPLC), this study conducted quality control of the organophosphate insecticide pirimiphos-methyl (Actellic 300CS), during the 2018 IRS round on Bioko Island, Equatorial Guinea. Approximately 60 SOs sprayed a total of 67,721 structures in 16,653 houses during the round. Houses that were reportedly sprayed were randomly selected for quality control testing. The SOs were monitored twice in 2018,

an initial screening in March followed by sharing of results with the IRS management team and identifcation of SOs to be re-trained, and a second screening in June to monitor the efectiveness of training. Insecticide samples were adhesive-lifted from wooden and cement structures and analysed using HPLC.

Results: The study suggests that with adequate quality control measures and refresher training, suboptimal spraying was curtailed, with a signifcant increased concentration delivered to the bedroom (diference=0.36, P<0.001) and wooden surfaces (diference 0.41, P=0.001). Additionally, an increase in efective coverage by SOs was observed, improving from 80.7% in March to 94.7% in June after re-training (McNemar’s test; P=0.03).

Conclusions: The ability to randomly select, locate, and test houses reportedly sprayed within a week via HPLC

has led to improvements in the performance of SOs on Bioko Island, enabling the project to better evaluate its own performance.

Keywords: Malaria, Indoor residual spraying, Vector control, Quality control, Bioko Island

Original language	English
Article number	35
Pages (from-to)	e35
Journal	Malaria Journal
Volume	19
Issue number	1
DOIs	https://doi.org/10.1186/s12936-020-3118-y
Publication status	Published - 21 Jan 2020

Keywords

Bioko Island
Indoor residual spraying
Malaria
Quality control
Vector control

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1186/s12936-020-3118-yLicence: CC BY

Fuseini Actellic performance Mal J 20Accepted author manuscript, 1.11 MBLicence: CC BY

Cite this

Fuseini, G., Mahmoud, H., Von Fricken, M. E., Weppelmann, T. A., Smith, J., Ellis Logan, R. A., Oladepo, S., Walker, K., Phiri, W. P., Paine, M., & Garciá, G. A. (2020). Improving the performance of spray operators through monitoring and evaluation of insecticide concentrationsof pirimiphos-methyl during indoor residual spraying for malaria control on Bioko Island. Malaria Journal, 19(1), e35. Article 35. https://doi.org/10.1186/s12936-020-3118-y

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abstract = "Background: Quality control of indoor residual spraying (IRS) is necessary to ensure that spray operators (SOs)deposit the correct concentration of insecticide on sprayed structures, while also confrming that spray records are not being falsifed.Methods: Using high-performance liquid chromatography (HPLC), this study conducted quality control of the organophosphate insecticide pirimiphos-methyl (Actellic 300CS), during the 2018 IRS round on Bioko Island, Equatorial Guinea. Approximately 60 SOs sprayed a total of 67,721 structures in 16,653 houses during the round. Houses that were reportedly sprayed were randomly selected for quality control testing. The SOs were monitored twice in 2018,an initial screening in March followed by sharing of results with the IRS management team and identifcation of SOs to be re-trained, and a second screening in June to monitor the efectiveness of training. Insecticide samples were adhesive-lifted from wooden and cement structures and analysed using HPLC.Results: The study suggests that with adequate quality control measures and refresher training, suboptimal spraying was curtailed, with a signifcant increased concentration delivered to the bedroom (diference=0.36, P<0.001) and wooden surfaces (diference 0.41, P=0.001). Additionally, an increase in efective coverage by SOs was observed, improving from 80.7\% in March to 94.7\% in June after re-training (McNemar{\textquoteright}s test; P=0.03).Conclusions: The ability to randomly select, locate, and test houses reportedly sprayed within a week via HPLChas led to improvements in the performance of SOs on Bioko Island, enabling the project to better evaluate its own performance.Keywords: Malaria, Indoor residual spraying, Vector control, Quality control, Bioko Island",

keywords = "Bioko Island, Indoor residual spraying, Malaria, Quality control, Vector control",

author = "Godwin Fuseini and Hanafy Mahmoud and \{Von Fricken\}, \{Michael E.\} and Weppelmann, \{Thomas A.\} and Jordan Smith and \{Ellis Logan\}, \{Rhiannon Agnes\} and Sade Oladepo and Kyle Walker and Phiri, \{Wonder P.\} and Mark Paine and Garci{\'a}, \{Guillermo A.\}",

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Fuseini, G, Mahmoud, H, Von Fricken, ME, Weppelmann, TA, Smith, J, Ellis Logan, RA, Oladepo, S, Walker, K, Phiri, WP, Paine, M & Garciá, GA 2020, 'Improving the performance of spray operators through monitoring and evaluation of insecticide concentrationsof pirimiphos-methyl during indoor residual spraying for malaria control on Bioko Island', Malaria Journal, vol. 19, no. 1, 35, pp. e35. https://doi.org/10.1186/s12936-020-3118-y

Improving the performance of spray operators through monitoring and evaluation of insecticide concentrationsof pirimiphos-methyl during indoor residual spraying for malaria control on Bioko Island. / Fuseini, Godwin; Mahmoud, Hanafy; Von Fricken, Michael E. et al.
In: Malaria Journal, Vol. 19, No. 1, 35, 21.01.2020, p. e35.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Improving the performance of spray operators through monitoring and evaluation of insecticide concentrationsof pirimiphos-methyl during indoor residual spraying for malaria control on Bioko Island

AU - Fuseini, Godwin

AU - Mahmoud, Hanafy

AU - Von Fricken, Michael E.

AU - Weppelmann, Thomas A.

AU - Smith, Jordan

AU - Ellis Logan, Rhiannon Agnes

AU - Oladepo, Sade

AU - Walker, Kyle

AU - Phiri, Wonder P.

AU - Paine, Mark

AU - Garciá, Guillermo A.

PY - 2020/1/21

Y1 - 2020/1/21

N2 - Background: Quality control of indoor residual spraying (IRS) is necessary to ensure that spray operators (SOs)deposit the correct concentration of insecticide on sprayed structures, while also confrming that spray records are not being falsifed.Methods: Using high-performance liquid chromatography (HPLC), this study conducted quality control of the organophosphate insecticide pirimiphos-methyl (Actellic 300CS), during the 2018 IRS round on Bioko Island, Equatorial Guinea. Approximately 60 SOs sprayed a total of 67,721 structures in 16,653 houses during the round. Houses that were reportedly sprayed were randomly selected for quality control testing. The SOs were monitored twice in 2018,an initial screening in March followed by sharing of results with the IRS management team and identifcation of SOs to be re-trained, and a second screening in June to monitor the efectiveness of training. Insecticide samples were adhesive-lifted from wooden and cement structures and analysed using HPLC.Results: The study suggests that with adequate quality control measures and refresher training, suboptimal spraying was curtailed, with a signifcant increased concentration delivered to the bedroom (diference=0.36, P<0.001) and wooden surfaces (diference 0.41, P=0.001). Additionally, an increase in efective coverage by SOs was observed, improving from 80.7% in March to 94.7% in June after re-training (McNemar’s test; P=0.03).Conclusions: The ability to randomly select, locate, and test houses reportedly sprayed within a week via HPLChas led to improvements in the performance of SOs on Bioko Island, enabling the project to better evaluate its own performance.Keywords: Malaria, Indoor residual spraying, Vector control, Quality control, Bioko Island

AB - Background: Quality control of indoor residual spraying (IRS) is necessary to ensure that spray operators (SOs)deposit the correct concentration of insecticide on sprayed structures, while also confrming that spray records are not being falsifed.Methods: Using high-performance liquid chromatography (HPLC), this study conducted quality control of the organophosphate insecticide pirimiphos-methyl (Actellic 300CS), during the 2018 IRS round on Bioko Island, Equatorial Guinea. Approximately 60 SOs sprayed a total of 67,721 structures in 16,653 houses during the round. Houses that were reportedly sprayed were randomly selected for quality control testing. The SOs were monitored twice in 2018,an initial screening in March followed by sharing of results with the IRS management team and identifcation of SOs to be re-trained, and a second screening in June to monitor the efectiveness of training. Insecticide samples were adhesive-lifted from wooden and cement structures and analysed using HPLC.Results: The study suggests that with adequate quality control measures and refresher training, suboptimal spraying was curtailed, with a signifcant increased concentration delivered to the bedroom (diference=0.36, P<0.001) and wooden surfaces (diference 0.41, P=0.001). Additionally, an increase in efective coverage by SOs was observed, improving from 80.7% in March to 94.7% in June after re-training (McNemar’s test; P=0.03).Conclusions: The ability to randomly select, locate, and test houses reportedly sprayed within a week via HPLChas led to improvements in the performance of SOs on Bioko Island, enabling the project to better evaluate its own performance.Keywords: Malaria, Indoor residual spraying, Vector control, Quality control, Bioko Island

KW - Bioko Island

KW - Indoor residual spraying

KW - Malaria

KW - Quality control

KW - Vector control

U2 - 10.1186/s12936-020-3118-y

DO - 10.1186/s12936-020-3118-y

M3 - Article

SN - 1475-2875

VL - 19

SP - e35

JO - Malaria Journal

JF - Malaria Journal

IS - 1

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ER -